Vinyl acrylic copolymers and methods of making and use thereof

Abstract

Described herein are compositions comprising a vinyl acrylic copolymer derived in the presence of maltodextrin. In some examples, the compositions comprise a copolymer derived from: vinyl acetate; an acrylate monomer having a Tg of −30° C. or less; a carboxylic acid, a carboxylic acid anhydride, or a combination thereof; and an organosilane; in the presence of maltodextrin. The copolymer can be provided as an aqueous dispersion. In some examples, the aqueous dispersion can have an overall solids content of from 40% to 75%. Also disclosed herein are carpet tiles having a surface coated with the adhesive formulations disclosed herein. In some examples, the carpet tile with the adhesive formulation applied thereto can pass the British spill test. Also disclosed herein are methods of making the compositions disclosed herein.

1 .- 52 . (canceled) 
     
     
         53 . A composition comprising a copolymer derived from:
 vinyl acetate;   an acrylate monomer having a glass transition temperature (T g ) of −30° C. or less;   a carboxylic acid, a carboxylic acid anhydride, or a combination thereof; and   an organosilane;   in the presence of maltodextrin.   
     
     
         54 . The composition of  claim 53 , wherein the copolymer is derived from 30-90% by weight vinyl acetate based on the total monomer weight. 
     
     
         55 . The composition of  claim 53 , wherein the copolymer is derived from 45-75% by weight vinyl acetate, based on the total monomer weight. 
     
     
         56 . The composition of  claim 53 , wherein the acrylate monomer comprises butyl acrylate, 2-ethylhexyl acrylate, or a combination thereof. 
     
     
         57 . The composition of  claim 53 , wherein the acrylate monomer comprises butyl acrylate. 
     
     
         58 . The composition of  claim 53 , wherein the copolymer is derived from 20-70% by weight of the acrylate monomer, based on the total monomer weight. 
     
     
         59 . The composition of  claim 53 , wherein the copolymer is derived from 30-60% by weight the acrylate monomer, based on the total monomer weight. 
     
     
         60 . The composition of  claim 53 , wherein the carboxylic acid, carboxylic acid anhydride, or a combination thereof is derived from a monocarboxylic acid, a dicarboxylic acid, or a combination thereof. 
     
     
         61 . The composition of  claim 53 , wherein the carboxylic acid, carboxylic acid anhydride, or combination thereof is selected from the group consisting of (meth)acrylic acid, itaconic acid, crotonic acid, fumaric acid, maleic acid, anhydrides thereof, and combinations thereof. 
     
     
         62 . The composition of  claim 53 , wherein the carboxylic acid comprises acrylic acid. 
     
     
         63 . The composition of  claim 53  wherein the copolymer is derived from greater than 0% to 10% by weight of the carboxylic acid, based on the total monomer weight. 
     
     
         64 . The composition of  claim 53 , wherein the copolymer is derived from 0.5-2% by weight of the carboxylic acid, based on the total monomer weight. 
     
     
         65 . The composition of  claim 53 , wherein the organosilane comprises a vinyl silane. 
     
     
         66 . The composition of a  claim 53 , wherein the organosilane comprises vinyltrimethoxysilane, vinyltriethoxysilane, vinyl tris(2-methoxyethoxysilane), vinyl triisopropoxysilane, gamma-methacryloxypropyltrimethoxy silane, or combinations thereof. 
     
     
         67 . The composition of  claim 53 , wherein the organosilane comprises vinyltriethoxysilane. 
     
     
         68 . The composition of  claim 53 , wherein the copolymer is derived from 0.05% to 2% by weight of the organosilane, based on the total monomer weight. 
     
     
         69 . An aqueous dispersion comprising water and the copolymer of  claim 53 . 
     
     
         70 . An adhesive formulation, comprising the aqueous dispersion of  claim 69 . 
     
     
         71 . A carpet tile having a surface coated with the adhesive formulation of  claim 70 . 
     
     
         72 . A method of making the composition of  claim 53 , the method comprising polymerizing monomers comprising:
 vinyl acetate;   an acrylate monomer having a T g  of −30° C. or less;   a carboxylic acid, a carboxylic acid anhydride, or a combination thereof; and   an organosilane;   in the presence of maltodextrin.