Built on selected potassium stearate and hydroxyl groups as an anionic water-dispersible foam stabilizing system, it is miscible with water-based systems in any ratio. Fast foaming, fine bubbles and long-lasting foam: an upgraded, long-acting foam stabilizer that replaces conventional ammonium stearate emulsions.
Exudation / blooming / chalking✕Ammonium salts tolerate neither heat nor storage: they decompose and volatilize under high temperature and drying, so the coated fabric surface blooms and crystallizes, the surface chalks and the hand feel turns rough✓The potassium salt structure is far more stable than the ammonium salt: no decomposition at high temperature, no exudation on drying, no blooming in long storage — the coating stays clean and clear, with no white spots and no powdery feel
Foam fineness and foam retention time✕Ammonium salt foam is loose with coarse cells; it collapses on standing and gives an uneven coat weight✓Fine, uniform closed-cell foam: strong foam retention and moderate flow, giving an even coat weight and suiting continuous production runs
Heat resistance and high-temperature drying✕Ammonium salts decompose and fail at high temperature, so the foaming ratio fluctuates widely✓Potassium stearate has excellent thermal stability: no foam loss or shrinkage on drying, a stable ratio under high-temperature setting, and smaller batch-to-batch color and coat-weight variation
Hand feel and release✕Ammonium salts leave a dry, powdery feel and the finished article goes hard✓Built-in lubrication gives a soft hand: full and fine rather than hard, with excellent release and anti-blocking performance
Storage and odor✕In long storage it volatilizes, turns acidic and gives off a strong odor✓The potassium salt system is stable: no pungent ammonia odor, no easy spoilage, no separation or settling — a friendlier workshop environment
Pore structure side by side
R300 · closed cell · fine and even
Ammonium · open cell · coarse, weak
Schematic
SEC.03 / SPECIFICATION
Specification
All seven values are transcribed verbatim from the TDS — no conversion, no rounding.
SolubilityMiscible with water in any ratio; no separation, no oil floating
Ionic typeAnionic
Solubility
Droplet merges instantly · no separation · no oil floating
SEC.04 / FOUR FUNCTIONS
Four functions in a single addition
Foam stabilization leads; emulsifying, lubricating/releasing and waterproofing come as side benefits.
01
Foam stabilization
Strongly stabilizes water-based foam, suppressing defoaming and foam collapse so the foamed coating stays even and full
02
Emulsifying and dispersing
Helps fillers and powders in the slurry disperse evenly, preventing agglomeration and settling
03
Lubrication and release
Improves the slip of the coating and gives excellent anti-blocking release
04
Waterproofing synergy
In cement and concrete systems it improves density, waterproofing and impermeability
SEC.05 / WHERE IT GOES
Applications
Four sectors, each mapped to its own uses.
01
Textiles
Foam coating
Foam dyeing
Foam flocking
Slurry foam stabilization
02
Chemicals
Water-based coatings
Emulsification in emulsion systems
Dispersing and wetting
03
Building materials
Cement
Concrete waterproofing agent
Densifier
04
Other
Release in water-based systems
Lubrication
Anti-settling aid
SEC.06 / HOW TO USE
Usage · storage · packaging
How to use
Dilute or add directlyDilute with water, or add straight into the system while stirring.
Low-shear mixing is enoughNo high-shear equipment needed; low-speed stirring disperses it evenly.
Dosage by trialAdjust by trial according to foam ratio and slurry solids.
Storage and packaging
StorageStore sealed in a cool, ventilated place; avoid freezing at low temperature and direct sun at high temperature
Shelf life6 months
PackagingStandard 20kg / 800kg plastic drums
SEC.07 / UPGRADE SUMMARY
Upgrade summary
R300 potassium stearate emulsion is the upgrade replacement for ammonium stearate emulsion:
No exudation
No whitening
No powdering
No ammonia odor · more stable · more heat-resistant
Finer, longer-lasting foam · better hand feel
Stable in mass production · fewer rejects
01Product positioning
What it is. R300 is a water-based potassium hydroxystearate emulsion foam stabiliser. The official category field is 'foam stabiliser' and the English category name is 'Foam Stabilizer', while the main component field is 'water-based potassium hydroxystearate emulsion'. The handbook's positioning line reads: 'an anionic water-dispersible foam stabilisation system built on premium potassium stearate and hydroxyl groups, miscible with water-based systems in any ratio, rapidly lowering the surface tension of the system, with fast foam formation, fine foam and long-lasting stabilisation'.
Name and its written forms. The catalogue line reads word for word 'R300: Water-based Potassium Hydroxystearate Emulsion Foam Stabilizer 48'; the technical data page title reads 'Water-based Potassium Hydroxystearate Emulsion Foam Stabilizer R300'; the English product name is the same string. The three forms denote one grade, and all three work as search terms.
The problem it solves. The handbook places this product in the context of 'comparison with ammonium stearate', and the pain points sit in three places. First, ammonium salt systems tolerate heat and storage poorly: at high temperature and during drying they decompose and volatilise readily, and the finished coated fabric whitens, crystallises, chalks at the surface and feels harsh. Second, ammonium salt foam is loose with coarse cells: it collapses on standing and gives uneven thickness on the line. Third, ammonium salt systems volatilise, turn acidic and smell strongly on long storage. R300 answers these three with a potassium salt structure.
Official fields and series position. Ion type 'anionic'; appearance 'uniform white viscous liquid with a silvery sheen (paste)'; solids content '27%'; pH '8–10 (mildly alkaline)'; viscosity '<200 mPa·s'; density '0.75-0.85 g/cm³'; solubility 'miscible with water in any ratio, no phase separation, no oiling out'; shelf life '6 months'; packaging 'standard 20kg / 800kg plastic drums'. The version 1.10 catalogue lists it inside the hyperdispersant series roster; the line after the R300 entry opens the flame-retardant series.
What it is not. It is not a foam-generating additive: the source does carry the phrase 'fast foam formation', but both the product positioning and the official category are foam stabilisation, that is holding foam and suppressing collapse, not generating it. It is not an additive for knocking foam down either; changing foam volume needs a different component. It is not ammonium stearate emulsion itself, since this product is the replacement direction for it. It is not a masterbatch body product, and it is not a hyperdispersant function even though it sits in the hyperdispersant series roster: its category field is 'Foam Stabilizer'.
Documentation boundary, stated up front. The handbook supplies a product introduction, technical indicators, five qualitative comparison statements, four functions, four application classes, usage, and storage and packaging. It does not supply item-by-item experimental values, specific degrees for a processing temperature window, a fixed recommended dosage percentage, a flammability rating, third-party test reports, certification numbers, or commercial data such as cost and availability. Every value below can be checked word for word against printed pages -48- / -49-; nothing has been converted or rounded.
Category: foam stabiliser (Foam Stabilizer) · Ion type: anionic
Main components: premium potassium stearate, hydroxyl groups · Form: uniform white viscous liquid with a silvery sheen (paste)
Core difference: potassium salt structure — no decomposition at high temperature, no blooming on drying, no whitening on long storage, no pungent ammonia odour
Four functions: foam stabilisation (main line) · emulsification and dispersion · lubrication and release · waterproofing enhancement
Four application classes: textiles · chemicals · building materials · others (detail in section 5)
02Formulation system & mechanism of action
The stabilisation side. R300 is an anionic water-dispersible system. Once added, it lowers the surface tension of the system quickly, so foam forms more easily and the cells are finer. The handbook describes the foam body as 'closed-cell, fine and uniform, with strong foam cling and moderate flow', which on the production side means 'even coating thickness on the line, excellent foaming stability, suitable for continuous line production'.
The potassium salt side. The main body of the product is potassium stearate. The handbook's comparison reads 'the potassium salt structure is far more stable than the ammonium salt: no decomposition at high temperature, no blooming on drying, no whitening on long storage'. Ammonium salt systems decompose and volatilise under high temperature, drying and long storage, and the finished coating and fabric whiten, crystallise, chalk at the surface and feel harsh as a result. The potassium salt holds firm at this point.
Heat resistance and drying. The handbook records 'potassium stearate has excellent thermal stability: no foam loss and no shrinkage during drying, a stable blow ratio under high-temperature drying, and smaller batch-to-batch colour and thickness variation'. That statement covers foam retention in the drying and high-temperature drying stages; it does not amount to a specific processing temperature window, because the source carries no temperature figures.
Where the three secondary functions come from. Beyond foam stabilisation, the handbook functions section lists three more. Emulsification and dispersion: 'helps the fillers and powders in the paste disperse evenly and prevents agglomeration and settling'. Lubrication and release: 'improves the slip of the coating and gives excellent anti-blocking and release performance'. Waterproofing enhancement: 'usable in cement and concrete systems to raise density and water and penetration resistance'. In the handbook these are parallel functional statements; foam stabilisation is the main line.
Boundary of the mechanism wording. All of the above is handbook product description, not an experimental conclusion of this site. This site has not tested R300 independently and holds no third-party performance report. Read these statements as 'as described in the handbook', not as 'third-party verified'.
Add to the systemDilute with water first, or add straight to the system; the handbook wording is 'no high-shear mixing required'.
Low-speed dispersionLow-speed stirring disperses it evenly and quickly; the handbook stresses high tolerance and wide compatibility.
Surface tension fallsAn anionic water-dispersible system: surface tension drops quickly and foam forms quickly.
Closed-cell foam formsClosed-cell, fine and uniform foam with strong cling and moderate flow gives even thickness on the line.
Drying and settingThe potassium salt structure does not decompose at high temperature and does not bloom on drying; no foam loss, no shrinkage, a stable blow ratio.
03Key parameters
The table below transcribes the handbook section 'Technical indicators' word for word. Values are neither converted nor rounded; units and notation follow the source, with viscosity as the single exception (the source writes mPas, this page uses the industry-standard mPa·s).
Uniform white viscous liquid with a silvery sheen (paste)
Solids content
27%
pH value
8–10 (mildly alkaline)
Viscosity
<200 mPa·s
Density
0.75-0.85 g/cm³
Miscibility
Miscible with water in any ratio; no phase separation, no oiling out
Ion type
Anionic
Shelf life
6 months
Packaging
Standard 20kg / 800kg plastic drums
Product form
Paste (uniform white viscous liquid with a silvery sheen)
Stabilisation direction
Suppresses foam breakage and collapse; keeps foam-coated fabric even and full
Data basis: Californium Curium Functional Additives handbook, version 1.10, R300 technical data pages (printed pages -48- / -49-). The density 0.75-0.85 g/cm³ and the packaging 20kg / 800kg are transcribed from the source. For actual use, confirm by bench trial against your own substrate, equipment and process.
04Recommended dosage window
The handbook section 'Usage' gives no fixed dosage percentage: it asks the user to 'adjust the addition level by bench trial according to the blow ratio and the solids content of the paste'. This section therefore gives no numeric window. It lists the source wording and the variables the source names. This page does not invent a recommended dosage.
Table 2 · R300 — recommended dosage
Scenario
Dosage
Conditions & notes
Textiles · foam coating
The source data does not specify a value
Set by bench trial against blow ratio and paste solids content
Textiles · foam dyeing
The source data does not specify a value
Set by bench trial against blow ratio and paste solids content
Textiles · foam flocking
The source data does not specify a value
Set by bench trial against blow ratio and paste solids content
Textiles · paste foam stabilisation
The source data does not specify a value
Set by bench trial against paste solids content
Chemicals · water-based coatings and emulsion systems
The source data does not specify a value
Set by bench trial against system solids content and target foam state
Building materials · cement and concrete systems
The source data does not specify a value
Set by bench trial against the formulation and the application method
Handbook principle, verbatim: 'dilute with water or add directly to the system and stir; low-speed stirring disperses it evenly and quickly, no high-shear mixing required. Adjust the addition level by bench trial according to the blow ratio and the solids content of the paste; compatibility is wide and tolerance high.' The control variables are blow ratio and paste solids content; the source names no third one.
This section contains no recommended percentage: the source data does not specify a value and this page does not supply one. For a specific addition level, run a bench trial on your own substrate and equipment against your target blow ratio, or ask the technical team for assistance.
05Applications
The handbook section 'Scope of application' lists four classes word for word, 13 application points in total. The table below keeps the original grouping; nothing has been merged or extended.
Textiles
Foam coating · foam dyeing · foam flocking · paste foam stabilisation. This group is R300's home ground: the handbook makes foam stabilisation the product's main line, and all four textile applications depend directly on a stable, uniform foam body.
Chemicals
Water-based coatings · emulsification of emulsion systems · dispersion and wetting. This maps to the handbook function 'emulsification and dispersion: helps fillers and powders in the paste disperse evenly and prevents agglomeration and settling'.
Building materials
Cement · concrete waterproofing agent · densifier. This maps to the handbook function 'waterproofing enhancement: usable in cement and concrete systems to raise density and water and penetration resistance'.
Others
Release in water-based systems · lubrication · anti-settling additive. This maps to the lubrication, release and anti-settling directions in the handbook functions section.
Field issues & application examples (as recorded in the source material)
Table 4 · Application case highlights
Field issue
What the source material states
Foam coating comes off the line with uneven thickness and bare patches. Can this be traced from the stabilisation side?
Work through the handbook's description in order. First check whether the foam body itself is 'closed-cell, fine and uniform': the handbook lists 'loose foam, coarse cells, collapse on standing, uneven thickness' as common faults of ammonium salt systems, while its wording for R300 is 'strong foam cling, moderate flow, even coating thickness on the line'. If the system still uses ammonium stearate, compare item by item against section 6. If R300 is already in use, run a bench trial on the two variables in section 4, blow ratio and paste solids content. The handbook gives no quantitative relationship between this fault and the addition level.
The fabric whitens and feels powdery after drying. Is that the foam stabiliser?
The handbook attributes 'whitening, crystallisation, surface chalking and a harsh hand' specifically to ammonium salt systems decomposing and volatilising under high temperature, drying and long storage, and describes R300's potassium salt structure as 'no blooming on drying, no whitening on long storage; the coated fabric stays clean and clear, with no white spots and no powdery feel'. Establish first whether the product in use is an ammonium salt or a potassium salt, then look at other causes. This site holds no independent test data on this fault.
Foam collapses mid-run on a continuous line. Does the handbook cover that?
The handbook covers line stability in core characteristics 2 and 3. One says 'closed-cell, fine and uniform foam with strong foam cling ... suitable for continuous line production'; the other says 'no foam loss and no shrinkage during drying, a stable blow ratio under high-temperature drying, and smaller batch-to-batch colour and thickness variation'. The handbook gives no time curve or quantitative criterion for collapse.
06How it differs from related grades
The handbook section 'Core product characteristics' is headed 'focus: comparison with ammonium stearate'. The five rows below transcribe the five comparison statements; the first column is the comparison item and the last two columns give the two sides as the source describes them.
Table 5 · Comparison with related grades
Comparison item
Ammonium stearate emulsion (as described in the source)
R300 water-based potassium hydroxystearate emulsion (as described in the source)
Blooming / whitening / chalking
Tolerates heat and storage very poorly; decomposes and volatilises readily at high temperature and during drying, and the coated fabric whitens, crystallises, chalks at the surface and feels harsh
The potassium salt structure is far more stable than the ammonium salt: no decomposition at high temperature, no blooming on drying, no whitening on long storage; the coating stays clean and clear, with no white spots and no powdery feel
Foam fineness and hold time
Loose foam with coarse cells; collapses on standing; uneven thickness
Closed-cell, fine and uniform foam with strong cling and moderate flow; even coating thickness on the line; suitable for continuous line production
Heat resistance and high-temperature drying
Decomposes and fails readily at high temperature; the foaming ratio fluctuates widely
Potassium stearate has excellent thermal stability: no foam loss and no shrinkage during drying, a stable blow ratio under high-temperature drying, and smaller batch-to-batch colour and thickness variation
Hand and release
Dry and powdery; the finished article feels stiff
Carries its own soft lubricating effect: a full, fine hand without stiffness, plus excellent release and anti-blocking
Storage and odour
Volatilises, turns acidic and smells strongly on long storage
Stable in nature: no pungent ammonia odour, resists spoilage, no separation or settling; a friendlier workshop environment
Both side columns of the table are handbook wording, not the result of a comparative test run by this site. This site has run no same-condition trial against ammonium stearate emulsion and holds no third-party comparison data; the size of the difference, how much better and how much longer, is not given as a value in the source.
07Usage & storage
The handbook sections 'Usage' and 'Storage and packaging' read as follows, transcribed item by item with no operating advice added.
How to add
Dilute with water, or add directly to the system and stir.
Low-speed stirring disperses it evenly and quickly; no high-shear mixing is required.
Set the addition level by bench trial against blow ratio and paste solids content; the source data does not specify a fixed percentage.
The handbook's own comment: 'wide compatibility, high tolerance'.
Storage
Store sealed in a cool, ventilated place.
Do not allow it to freeze at low temperature.
Avoid high temperature and direct sunlight.
Shelf life: 6 months.
Packaging
Standard 20kg / 800kg plastic drums, transcribed from the source.
The product is a paste; reseal the container after use so the surface does not dry out.
Boundary of this product
This is a foam stabiliser, not a foam-generating additive and not an additive for knocking foam down; changing foam volume needs a different component.
When replacing ammonium stearate, compare the five rows in section 6 item by item and confirm line performance on a bench sample.
The handbook gives no processing temperature window; set process temperature by your own equipment and substrate.
08FAQ
How exactly does R300 differ from conventional ammonium stearate emulsion?
The handbook gives five comparisons. 1) Blooming, whitening, chalking: the ammonium salt tolerates heat and storage very poorly, decomposes and volatilises on high-temperature drying, and the fabric whitens, crystallises, chalks and feels harsh; R300's potassium salt structure does not decompose at high temperature, does not bloom on drying and does not whiten on long storage, with no white spots and no powdery feel. 2) Foam: the ammonium salt is loose with coarse cells, collapses on standing and gives uneven thickness; R300 is closed-cell, fine and uniform, clings strongly, gives even thickness on the line and suits continuous line production. 3) Heat resistance: the ammonium salt decomposes and fails at high temperature and its foaming ratio fluctuates widely; potassium stearate has excellent thermal stability, with no foam loss or shrinkage on drying, a stable blow ratio and smaller batch-to-batch colour variation. 4) Hand: the ammonium salt is dry and powdery and the finished article feels stiff; R300 carries its own soft lubrication, giving a full, fine hand without stiffness plus release and anti-blocking. 5) Storage: the ammonium salt volatilises, turns acidic and smells strongly; R300 has no pungent ammonia odour, resists spoilage and does not separate or settle.
What are the technical indicators for R300?
Appearance: uniform white viscous liquid with a silvery sheen (paste); solids content 27%; pH 8–10 (mildly alkaline); viscosity <200 mPa·s; density 0.75-0.85 g/cm³; solubility: miscible with water in any ratio, no phase separation, no oiling out; ion type: anionic. Shelf life 6 months; packaging standard 20kg / 800kg plastic drums. All of this is transcribed word for word from the handbook technical data page, with no conversion and no rounding.
Why does R300 not bloom on high-temperature drying and not whiten on long storage?
Because the main body is potassium stearate. The handbook states 'the potassium salt structure is far more stable than the ammonium salt: no decomposition at high temperature, no blooming on drying, no whitening on long storage'. The failure route is described on the ammonium salt side: ammonium salt systems tolerate heat and storage very poorly, and under high temperature, drying and long storage they decompose and volatilise, so the finished coating and fabric whiten, crystallise, chalk at the surface and feel harsh. This site has not independently verified that mechanism.
Where is R300 used?
The handbook section 'Scope of application' gives four classes and 13 application points in total. Textiles: foam coating, foam dyeing, foam flocking, paste foam stabilisation. Chemicals: water-based coatings, emulsification of emulsion systems, dispersion and wetting. Building materials: cement, concrete waterproofing agent, densifier. Others: release in water-based systems, lubrication, anti-settling additive.
What else does R300 do besides stabilising foam?
The handbook functions section lists four, with foam stabilisation as the main line and the other three as parallel statements. Foam stabilisation: strongly stabilises water-based foam, suppresses breakage and collapse, and keeps the foam coating even and full. Emulsification and dispersion: helps fillers and powders in the paste disperse evenly and prevents agglomeration and settling. Lubrication and release: improves the slip of the coating and gives excellent anti-blocking and release performance. Waterproofing enhancement: usable in cement and concrete systems to raise density and water and penetration resistance.
How is it added? Does it need high-shear mixing?
No. The handbook reads: 'dilute with water or add directly to the system and stir; low-speed stirring disperses it evenly and quickly, no high-shear mixing required. Adjust the addition level by bench trial according to the blow ratio and the solids content of the paste; compatibility is wide and tolerance high.' The handbook gives no fixed dosage percentage, so the specific level follows your own bench trial.
What is the recommended addition level?
The source data does not specify a value. The handbook only asks for adjustment by bench trial against blow ratio and paste solids content and gives no percentage window, so this page gives none either: a number invented here would not help you. For a specific level, ask the technical team for assistance or run a bench trial on the two factors the handbook names: blow ratio and paste solids content.
What are the storage conditions, shelf life and packaging?
Storage: sealed, cool and ventilated, away from freezing and from high temperature and direct sunlight. Shelf life: 6 months. Packaging: standard 20kg / 800kg plastic drums, transcribed from the source. The product is a paste, so reseal the container after use to stop the surface drying out.
Is R300 a foam-generating additive or a foam stabiliser?
It is a foam stabiliser. The official category field is 'Foam Stabilizer' and the first function is 'foam stabilisation: strongly stabilises water-based foam, suppresses breakage and collapse'. The handbook introduction does say 'fast foam formation', which describes how quickly foam forms; the product is not a component used to generate foam, and it is not an additive for knocking foam down. Changing foam volume needs a different component.
Does R300 have a flammability rating, third-party test report or certification?
This site holds no flammability rating result, no third-party test report number and no certification information for R300, and the handbook page for this grade gives none either. Request such documents directly from the technical team; the public material here carries no such numbers.
AppendixData sources
Every fact on this page comes from the two R300 pages of the Californium Curium Functional Additives handbook, version 1.10; the grade is told apart from other grades by its catalogue line in the same catalogue. The source forms are listed below so you can check them.
Handbook catalogue (page 3): 'R300: Water-based Potassium Hydroxystearate Emulsion Foam Stabilizer 48', confirming the grade name and its place in the roster.
Technical data pages (printed pages -48- / -49-): product introduction, seven technical indicators, five core product characteristics (comparison with ammonium stearate), four functions, four application classes, usage, storage and packaging, and the replacement upgrade summary.
Data layer (products.ts): category 'foam stabiliser', English category 'Foam Stabilizer', main component 'water-based potassium hydroxystearate emulsion', and six application points, all supplied by this site's product data fields and from the same source as the handbook.
House rule: every value is transcribed word for word, not converted and not rounded; items the source does not carry are marked on the page as not given.
Not covered by the source material (not written on this page — to be added later)
A fixed recommended addition level (percentage window): not given in the handbook, which asks only for a bench trial against blow ratio and paste solids content.
Specific degrees for the processing temperature window: the handbook gives a qualitative statement only, in core characteristic 3.
Item-by-item experimental data, performance curves, line or finished-product measurements: not listed on this grade's handbook page.
Flammability rating results, third-party test report numbers, certification information: neither the handbook nor this site has them.
The second figure in the packaging specification 20kg / 800kg: transcribed from the source, to be reconciled once the data side confirms it.
Safety data of the material safety data sheet type: not listed on this grade's handbook page and to be requested from the technical team.
