Methods of coating fabrics with emulsions of elastomeric polymers and polyurethane dispersions
AssigneeDow Corning Corporation
InventorsWilliam Raye Blackwood, Shaow Burn Lin, Anil Kumar Saxena
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Abstract
A method for coating a substrate comprises the steps of: (I) applying a layer on the substrate of a curable composition comprising: (A) a water continuous emulsion comprising a curable elastomeric polymer having a viscosity of 0.5-1,000,000 KPa-s and a glass transition temperature up to 50° C., (B) an aqueous polyurethane dispersion, and optionally (C) a cure agent (II) exposing the layer to air for sufficient time to form a cured coating. Coated fabrics prepared accordingly are particularly useful in the construction of automobile protective airbags or other such inflatable coated textile devices.
Claims28
A method for coating a substrate comprising the steps of:
- (I) applying a layer on the substrate of a curable composition comprising:
- (A) a water continuous emulsion comprising a curable elastomeric polymer having a viscosity of 0.5-1,000,000 KPa-s and a glass transition temperature up to 50° C.,
- (B) an aqueous polyurethane dispersion, and optionally
- (C) a cure agent
- (II) exposing the layer to air for sufficient time to form a cured coating.
A method for coating a substrate comprising the steps of:
- (I) applying a first layer on the substrate of a curable composition comprising;
- (A) a water continuous emulsion comprising a curable elastomeric polymer having a viscosity of 0.5-1,000,000 KPa-s and a glass transition temperature up to 50° C.,
- (B) an aqueous polyurethane dispersion, and optionally
- (C) a cure agent,
- (II) exposing the first layer to air for sufficient time to form a cured first coating,
- (III) applying a second layer on the cured first coating of a composition comprising a polyorganosiloxane-based elastomeric material,
- (IV) exposing the second layer to air for sufficient time to form a cured second coating.
Dependencies are inferred from the claim text.