Abstract: An aqueous coating composition suitable for automotive leather finishing topcoats that has low odor and low VOC content, and also exhibits acceptable pot life.

Abstract: The present invention provides aqueous composition comprising a multi-stage acrylic emulsion polymer having a first stage polymer of from 0.5 to 4 wt. %, based on the total weight of monomers used to make the first stage polymer, of a copolymerized carboxylic acid or salt group containing monomer, and having 10 to 30 wt. %, on total solids of the multi-stage acrylic emulsion polymer, of a second stage polymer of from 3 to 15 wt. % of a copolymerized hydroxyl group containing monomer, the first stage polymer having a glass transition temperature (Tg) by dynamic mechanical analysis (DMA) of less than ?10° C. and the second stage polymer having a Tg (DMA) of greater than 80° C.; and (ii) from 25 to 75 wt. %, based on the total solids weight of the multi-stage acrylic polymer, of a polyurethane.

Abstract: The present invention provides aqueous composition comprising a multi-stage acrylic emulsion polymer having a first stage polymer of from 0.5 to 4 wt. %, based on the total weight of monomers used to make the first stage polymer, of a copolymerized carboxylic acid or salt group containing monomer, and having 10 to 30 wt. %, on total solids of the multi-stage acrylic emulsion polymer, of a second stage polymer of from 3 to 15 wt. % of a copolymerized hydroxyl group containing monomer, the first stage polymer having a glass transition temperature (Tg) by dynamic mechanical analysis (DMA) of less than ?10° C. and the second stage polymer having a Tg (DMA) of greater than 80° C.; and (ii) from 25 to 75 wt. %, based on the total solids weight of the multi-stage acrylic polymer, of a polyurethane.

Abstract: The present invention provides aqueous flesh coating compositions comprising one or more aqueous acid-functional acrylic or vinyl copolymer and from 0.03 and up to 1.0 equivalent, based on equivalents of carboxylic acid in the polymer, of one or more active compound chosen from an aminoguanidine, semicarbazide, dihydrazide, guanamine, hydrazine and a salt thereof. Further, the invention provides methods of applying the coating composition to leather crust or to tanned leather, and to the flesh coated leather or coated leather crust produced thereby. The leather crust and tanned leather produced by the invention, for example fleshcoated or finished leather, will emit greatly reduced levels of aldehydes over time and especially valuable in scrubbing aldehydes from perforated leather for automotive use.

Abstract: An aqueous leather coating composition having improved storage stability includes 1 to 40 weight percent of an emulsifiable polyisocyanate comprising the reaction product of an isocyanurate and an emulsifier, wherein the average isocyanate functionality of the emulsifiable polyisocyanate is 2 to 4.5; and 60 to 99 weight percent of an aqueous polymer dispersion having a Tg of ?70 to 40° C. and selected from a (meth)acrylic polymer dispersion, a polyurethane dispersion, a (meth)acrylic polymer/polyurethane hybrid dispersion and a combination comprising one or more of the foregoing aqueous polymer dispersions, wherein all weight percents are on a dry basis, and based on the total dry amount of the emulsifiable polyisocyanate and the aqueous polymer dispersion. The aqueous polymer dispersion can be free of hydroxyl groups. Also disclosed are a method of coating leather with the composition, and a coated leather article.

Abstract: An aqueous leather coating composition having improved storage stability includes 1 to 40 weight percent of an emulsifiable polyisocyanate comprising the reaction product of an isocyanurate and an emulsifier, wherein the average isocyanate functionality of the emulsifiable polyisocyanate is 2 to 4.5; and 60 to 99 weight percent of an aqueous polymer dispersion having a Tg of ?70 to 40° C. and selected from a (meth)acrylic polymer dispersion, a polyurethane dispersion, a (meth)acrylic polymer/polyurethane hybrid dispersion and a combination comprising one or more of the foregoing aqueous polymer dispersions, wherein all weight percents are on a dry basis, and based on the total dry amount of the emulsifiable polyisocyanate and the aqueous polymer dispersion. The aqueous polymer dispersion can be free of hydroxyl groups. Also disclosed are a method of coating leather with the composition, and a coated leather article.

Abstract: The present invention provides methods for reducing the level of free aldehydes in coatings for flexible substrates, such as tanned leather, and substantially aldehyde free substrates. The methods comprise applying to the substrate a composition of one or more aqueous emulsion or suspension composition of an acrylic polymer or silicon containing polymer that is made from, or contains one or more lower alkyl alcohol or degrades on storage or in use to form such an alcohol, and one or more water-insoluble to slightly water soluble aldehyde scavenger compound, followed by drying or curing the applied composition to form a coating. In addition, the methods provide enhanced aldehyde scrubbing, especially for acetaldehyde, by applying to a substrate an aqueous acrylic polymer or silicon containing polymer emulsion or suspension comprising a aldehyde scavenger compound that is substantially deprotonated, i.e. by raising the pH composition to 5.5 or higher.

Abstract: The present invention provides aqueous matte coating compositions comprising a binder component B) and a polymeric duller component A) composed of particles of one or more multi-stage copolymer or single stage crosslinked (co)polymer, e.g. crosslinked t-butyl (meth)acrylate, the duller component particles A) having an average diameter of 1-20 ?m. Components A) and B) are compatible. Preferably, the duller component A) is acrylic; more preferably, components A) and B) are acrylic. The aqueous compositions provide matte coatings having haptic or feel (soft touch) properties, film and appearance properties, including burnish resistance and low color loss.

Abstract: The present invention provides aqueous flesh coating compositions comprising one or more aqueous acid-functional acrylic or vinyl copolymer and from 0.03 and up to 1.0 equivalent, based on equivalents of carboxylic acid in the polymer, of one or more active compound chosen from an aminoguanidine, semicarbazide, dihydrazide, guanamine, hydrazine and a salt thereof. Further, the invention provides methods of applying the coating composition to leather crust or to tanned leather, and to the flesh coated leather or coated leather crust produced thereby. The leather crust and tanned leather produced by the invention, for example fleshcoated or finished leather, will emit greatly reduced levels of aldehydes over time and especially valuable in scrubbing aldehydes from perforated leather for automotive use.

Abstract: The present invention provides methods for reducing the level of free aldehydes in coatings for flexible substrates, such as tanned leather, and substantially aldehyde free substrates. The methods comprise applying to the substrate a composition of one or more aqueous emulsion or suspension composition of an acrylic polymer or silicon containing polymer that is made from, or contains one or more lower alkyl alcohol or degrades on storage or in use to form such an alcohol, and one or more water-insoluble to slightly water soluble aldehyde scavenger compound, followed by drying or curing the applied composition to form a coating. In addition, the methods provide enhanced aldehyde scrubbing, especially for acetaldehyde, by applying to a substrate an aqueous acrylic polymer or silicon containing polymer emulsion or suspension comprising a aldehyde scavenger compound that is substantially deprotonated, i.e. by raising the pH composition to 5.5 or higher.

Abstract: The present invention provides aqueous matte coating compositions comprising a binder component B) and a polymeric duller component A) composed of particles of one or more multi-stage copolymer or single stage crosslinked (co)polymer, e.g. crosslinked t-butyl (meth)acrylate, the duller component particles A) having an average diameter of 1-20 ?m. Components A) and B) are compatible. Preferably, the duller component A) is acrylic; more preferably, components A) and B) are acrylic. The aqueous compositions provide matte coatings having haptic or feel (soft touch) properties, film and appearance properties, including burnish resistance and low color loss.