R77

First, draw the boundaries clearly. R77 is a processing aid—an 'internal-additive water and oil repellent agent': it is added directly at the chemical fiber or plastic raw material stage and is formed together with the raw material, rather than relying on finishing to 'attach' the repellent to the fabric surface. It is supplied as the additive itself (white powder); resin blending, pelletizing, and carrier-resin incorporation belong to the masterbatch line (M series), while R77 addresses the 'directly added into the raw material system' route. (Data source: product handbook / official product data)

Names and categories (recorded as given at each layer). The manual page title verbatim: 'Plastic Water and Oil Repellent R77'; the manual table of contents line and official full name verbatim: 'Plastics Internal-Additive Water and Oil Repellent Agent'; official English name: 'Hydrophobic/Oleophobic R77'; official category field: 'Water and Oil Repellent Agent' (English category name: Hydrophobic Agent). There are two other short names on the official website—the list title 'Hydrophobic Agent (Fluorine-Free)' and the detail page title 'Plastics Internal-Additive Hydrophobic Agent (Fluorine-Free)'—they coexist at each layer, all recorded as in the source and not altered interchangeably. (Data source: product handbook / official product data)

Series positioning. R77 belongs to the Comprehensive Series (27 models released externally), 3rd in list order (preceded by R78 in the hydrophilic direction, followed by sister grade R77F). Official one-liner (tagline): 'Internal-additive water and oil repellency, long-lasting protection'. (Data source: product handbook / official product data)

The main application line is synthetic fabrics, with anti-soiling plastics as a secondary use. The documentation states 'suitable for materials such as raincoats, outdoor jackets, and travel bags', and explicitly states 'can also be used for anti-soiling plastic films, various anti-soiling plastic components, etc.'; [Application Scope] is 'plastics and chemical fibers PP, PE'. (Data source: product handbook / official product data)

The route characteristic is a 'fluorine-free system'. The detail page states very plainly that it is 'different from traditional fluorine-based waterproofing agents': this product is a pure fluorine-free system, in line with the development trends of modern ecological textiles and plastic products; the list title also directly labels it 'fluorine-free'. This point is most easily confused with sister grade R77F—R77F follows a fluorine-containing ionic route, and the two grades have opposite directions and are not interchangeable (see Section 6 for field-by-field details). (Data source: product handbook / official product data)

Compliance positioning: this page does not involve 'halogen-free / low-halogen' statements. R77 does not belong to flame-retardant systems, nor is it on the true halogen-free nine-model list; there are 0 halogen statements associated with R77 itself—halogen-free and low-halogen are both not applicable (the latter is an M922-exclusive statement), and this page states 'not applicable'. (Data source: product handbook / official product data)

Two components, all taken from this grade's documentation. [Main Components] verbatim: 'Silica 33% hydrogenated silicone 67%'. The detail page interprets these figures as 'two-component composition: silica carrier + hydrogenated silicone active phase'—silica serves as the dispersing carrier, and hydrogenated silicone is the active phase that provides low surface energy. This grade page does not list a third component; we do not invent one. (Data source: product handbook / official product data)

Mechanism layer 1: lower the surface tension. The manual's original wording is: when internally added to chemical fiber products, 'it lowers the surface tension of the fibers, so that water droplets cannot wet the surface'—this process is called water and oil repellency, also known as breathable waterproof and oil-proof. The key word is 'breathable': water repellency is not achieved by a closed coating, so the documentation immediately following states 'fabrics to which R77 water and oil repellent agent has been added can still maintain their breathability'. (Data source: product handbook / official product data)

Mechanism layer 2: lotus leaf effect (qualitative layer). The detail page describes the macroscopic effect as 'imparts excellent superhydrophobic and oleophobic properties to the substrate surface; water droplets slide off the surface very easily, exhibiting a typical lotus leaf effect and achieving an excellent anti-soiling self-cleaning effect'; the schematic animation notes 'micro-nano papillae structure + low surface energy → superhydrophobic and oleophobic'. This is a schematic statement—quantitative criteria such as contact angle values and water repellency grades are not provided in the documentation, and they should not be cited as measured data in the published version. (Data source: product handbook / official product data)

Mechanism layer 3: durability follows the internal-additive route. The detail page states: 'As an internal-additive water and oil repellent agent, the active ingredients penetrate deep into the substrate, providing extremely excellent washing resistance, dry-cleaning resistance, abrasion resistance, and durability, while not affecting the breathability of the product.' (Data source: product handbook / official product data)

Mechanism layer 4: anti-soiling is an extended use. Alias 'anti-soiling agent'; the use statement is 'can also be used for anti-soiling plastic films, various anti-soiling plastic components, etc.'—water and oil repellency makes contaminants less likely to adhere and easier to be carried away by water droplets (the detail page describes droplets beading up, rolling off, and rolling away soil particles). (Data source: product handbook / official product data)

Documentation boundaries. The chemical structure breakdown of the hydrogenated silicone, the quantitative description of the active-phase dispersion mechanism, and third-party test conclusions—none are provided on this grade page; we do not invent them. (Data source: product handbook / official product data)

The table below summarizes the physicochemical indicators recorded in the documentation; the values in the table are documented values, and small-scale testing is recommended before batch use.

The values in the table are documented values; small-scale testing is recommended before batch use. (Data source: product handbook / official product data)

How to read the window. First, this is a powder additive, based on the final plastic product as denominator; 0.5%—1% is a narrow band; the sister grade R77F is 0.8%—1%; the two must not be copied from each other. Second, the denominator must be aligned: do not mix it with masterbatch-side dosages calculated on a "plastic raw material" basis (masterbatch loading is not disclosed in the documentation; changing the denominator is equivalent to changing the calculation method). Third, state the absence of direction clauses as it is: do not write "thinner add more / thinner add less"; fixed values should go through small-scale testing. (Data source: product handbook / official product data)

Factors determining dosage and denominator basis are subject to the documentation; for actual addition amount, please request the technical documents supplied with the goods for the specific item code and conduct small-scale testing.

The above are documented values; for actual production, please conduct small-scale testing in combination with your own system and process for confirmation. (Data source: product handbook / official product data)

Material line and processing position. The target system has two layers: chemical fiber products (fabrics) and plastic chemical fiber, PP, PE—the [Application Scope] line reads verbatim "plastic chemical fiber PP, PE"; the documentation also names fabric materials such as raincoats, outdoor jackets, and travel bags, as well as antifouling plastic films and various antifouling plastic components. The addition method is internal addition (the documentation states verbatim "internally added to chemical fiber products"; the form field records "internal addition type"); process steps, mixing equipment and screw, and spinning parameters are not provided in the documentation—under an internal addition route, dispersion uniformity directly affects performance consistency, and it is recommended to include this in the small-scale test plan and determine together. (Data source: product handbook / official product data)

Material line and processing position

The target system has two layers: chemical fiber products (fabrics) and plastic chemical fiber, PP, PE—the [Application Scope] line reads verbatim "plastic chemical fiber PP, PE"; the documentation also names fabric materials such as raincoats, outdoor jackets, and travel bags, as well as antifouling plastic films and various antifouling plastic components. The addition method is internal addition (the documentation states verbatim "internally added to chemical fiber products"; the form field records "internal addition type"); process steps, mixing equipment and screw, and spinning parameters are not provided in the documentation—under an internal addition route, dispersion uniformity directly affects performance consistency, and it is recommended to include this in the small-scale test plan and determine together. (Data source: product handbook / official product data)

Effect conditions and breathability retention

The effect is the result of combined action: "The water- and oil-repellent effect of the fabric depends not only on the additive but also on the fabric's organizational structure"; the detail page requires "after the formula ratio is set, please conduct small-scale testing in combination with the organizational structure for confirmation." The handbook points out breathability retention in two places—"fabrics with R77 water- and oil-repellent agent added can still maintain their breathability" and "also called breathable waterproof and oil-proof." (Data source: product handbook / official product data)

Scope reminder (do not overstep)

The applicable scope statement contains the word "etc.", but the documentation does not provide a complete list—whether other substrates are applicable, the processing temperature window, and mixing equipment requirements are all not stated; treat blanks as "not stated in the documentation"; do not extrapolate, do not draft on behalf. (Data source: product handbook / official product data)

Field issues & application examples (as recorded in the source material)

(1) Core of this page: field-by-field comparison of R77 and its sister grade R77F. The two are paired on pages and run in opposite directions, and are most easily confused during selection:

Reading note: The comparison only explains each item's documentation positioning and applicable targets; values for different grades must not be applied interchangeably. Determination should be based on the official full name and category field. (Data source: product handbook / official product data)

The following points are taken item by item from the documented data; items not listed in the data are not supplied by assumption.

This page's data comes from two types of documentation and can be traced item by item:

• Facts on this page come from two types of sources: product handbook and official product data; where quantitative data is blank, it is always written as 'not stated in the data / not given in the data', and no numerical values are supplied by assumption.
• The contact angle comparison panel, composition ratio ring, and feature cards on the official detail page are qualitative illustrations and are not cited as measured data; if they conflict with the handbook clauses, the handbook clauses shall prevail.
• Halogen and fluorine wording: for R77, halogen is treated as 'not applicable'; the fluorine direction is a fluorine-free system, opposite to the fluorine-containing ion direction of sister grade R77F, and they are not interchangeable. Dosage and process parameters shall ultimately be based on the technical documents supplied with the goods and written confirmation from the product side.

Not covered by the source material (not written on this page — to be added later)

• The compatibility item is entirely missing—not listed on this grade's page (the R169 page in the same line has this clause).
• Processing details (process steps, mixing equipment, screw and spinning parameters, feeding sequence)—not given in the data.
• Tiered subdivision and upper-limit verification for the 0.5%—1% dosage—only the overall range is given in the data.
• Scenario-by-scenario selection boundaries for R77 and R77F—the data only gives the direction and each grade's application fields.
• Code-by-code correspondence between R77 / R77F and M89—not named in the data; the masterbatch loading is not disclosed (cannot be converted).
• Quantitative criteria for 'superhydrophobic and superoleophobic / lotus effect' (contact angle, water repellency rating)—the detail page contains an illustrative animation.
• Quantitative durability criteria (wash resistance, dry cleaning, number of rubs and retention rate); shelf life and packaging liner details.