Paste Composition For Use In Coating Films, Fibers, And Fabrics And Method of Manufacture
AssigneeWacker Chemical Corporation
InventorsJOHN H. RICHARDS, III, VERONICA A. COLEMAN, MICHAEL L. COFFEY
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Abstract
A paste composition for use in coating film, fiber, or fabric includes a dry grease having a discontinuous aqueous phase having a non-ionic alkoxylate surfactant portion and a polyorganosiloxane oil phase. The past further includes a dry-grease suspended powder. The surfactant portion is effective to suspend the powder forming a self-supporting form.
Claims25
A paste composition for use in coating films, fibers, and fabrics, the composition comprising:
- a dry grease comprising a discontinuous aqueous phase having a non-ionic alkoxylate surfactant, and a polyorganosiloxane oil phase;
- and
- a powder being suspended in the dry grease, wherein the dry grease has an effective quantity of surfactant portion and an effective amount of the polyorganosiloxane oil to form a self-supporting form.
The composition of claim 8, wherein the dry grease comprises a low-shear blend of the oil phase and the aqueous phase, wherein the aqueous phase comprises less than 10% weight of the dry grease.
A paste composition for use in coating films, fibers, and fabrics, the composition comprising:
- a filled silicone-containing composite comprising a substantially anhydrous water-in-oil emulsion including a surfactant, a film-forming silicone oil having a viscosity ranging from 5 centipoise to 60,000 centipoise, and a powder;
- and
- water, wherein the water is in an effective amount to form a coatable, filled, silicone-containing composite.
A method of manufacture of a paste composition for use in coating films, fibers, and fabrics, the method comprising the steps of:
- (a) providing a blend of water and a surfactant, the ratio of water to surfactant ranging from 1 to 3 by weight of the blend;
- (b) shearing a silicone oil into the blend to form a self-supporting water-in-oil emulsion, the silicone oil comprising a range of 50 wt % to 85 wt % of the emulsion, the emulsion being self-supporting for a time period after shearing ceases;
- and
- (c) mixing a solid with the self-supporting water-in-oil emulsion to form a first paste;
- the solid comprising 4% by weight to 30% by weight on a dry solids basis of the paste composition.
An article comprising:
- a substrate selected from the group consisting of a woven fabric, a non woven fabric, a fiber, and a film;
- and
- a paste including a dry grease having a powder disposed therein, the paste being disposed adjacent to or incorporated into the substrate, the dry grease comprising a water-in-oil emulsion comprising a non-ionic alkoxylate surfactant, water, and a polyorganosiloxane oil, wherein the surfactant comprises a ratio of molar content of alkylate content to alcohol content ranging from 4 to 10.
Dependencies are inferred from the claim text.