Floor covering adhesive composition comprising a vinyl acetate-ethylene copolymer

Patent metadata

Field	Value
Publication number	US-2016289512-A1
Application number	US-201415035875-A
Country	US
Kind code	A1
Filing date	Oct 28, 2014
Priority date	Nov 14, 2013
Publication date	Oct 6, 2016
Grant date	—

Abstract

The invention relates to a floor covering adhesive composition, based on an aqueous, emulsifier-stabilized polymer dispersion of vinyl acetate-ethylene copolymer, containing A) tackifying resin, B) one or more fillers, and C) a vinyl acetate-ethylene copolymer in the form of an emulsifier-stabilized aqueous dispersion, characterized in that the vinyl acetate-ethylene copolymer is obtained by radical-initiated emulsion polymerization in an aqueous medium, of a) 60 to 89.9% by weight of vinyl acetate, b) 10 to 36% by weight of ethylene, c) 0 to 2% by weight of one or more monomers selected from the group of vinyl esters of carboxylic acids having 8 to 12 C atoms and acrylic acid alkyl esters having a C to C8 alkyl radical, d) 0.1 to 5% by weight of one or more ethylenically unsaturated auxiliary monomers having a carboxylic acid group, amide group, nitrile group or sulfonic acid (salt) group, wherein the percentages stated in % by weight are each in relation to the total weight of the comonomers and add up to 100% by weight, and the polymerization is carried out in the presence of one or more emulsifiers.

First claim

1 . A process for adhesively bonding a floor covering to a substrate, wherein the floor covering is woodblock flooring, laminate, plastic floor covering, carpet, or a floor covering made from a natural material, comprising using a floor covering adhesive composition comprising
A) tackifying resin, B) one or more fillers and C) a vinyl acetate-ethylene copolymer in the form of an emulsifier-stabilized aqueous dispersion, wherein the vinyl acetate-ethylene copolymer is obtained by radically initiated emulsion polymerization, in aqueous medium, of a) 60 to 89.9 wt % of vinyl acetate, b) 10 to 36 wt % of ethylene, c) 0 to 2 wt % of one or more monomers from the group of the vinyl esters of carboxylic acids having 8 to 12 C atoms and the acrylic acid alkyl esters with C 1 to C 8 alkyl radical, d) 0.1 to 5 wt % of one or more ethylenically unsaturated auxiliary monomers with carboxylic acid group, amide group, nitrile group or sulfonic acid (salt) group, the figures in wt % being based in each case on the total weight of the comonomers and adding up to 100 wt %, and the polymerization being performed in the presence of one or more emulsifiers.

2 . The process as claimed in claim 1 , wherein 5 to 35 wt % of tackifying resin A) are included.

3 . The process as claimed in claim 1 , wherein 15 to 50 wt % of fillers B) are included.

4 . The process as claimed in claim 1 , wherein 15 to 50 wt % of dispersion C) are included.

5 . The process as claimed in claim 1 , wherein 66 to 86 wt % of vinyl acetate a), based on the total weight of the comonomers, are copolymerized.

6 . The process as claimed in claim 1 , wherein 10 to 30 wt % of ethylene b), based on the total weight of the comonomers, are copolymerized.

7 . The process as claimed in claim 1 , wherein 0.1 to 2 wt % of monomers c), based on the total weight of the comonomers, are copolymerized.

8 . The process as claimed in claim 1 , wherein 0.1 to 4 wt % of auxiliary monomers d), based on the total weight of the comonomers, are copolymerized.

9 . The eprocess as claimed in claim 1 , wherein the aqueous dispersion is stabilized with one or more nonionic or anionic emulsifiers or mixtures of nonionic and anionic emulsifiers.

10 . The process as claimed in claim 1 , wherein the floor covering is made from a natural material selected from the group consisting of cork, sisal, and linoleum.

11 . The process as claimed in claim 1 , wherein the substrate is selected from the group consisting of concrete, screed, and wood fiberboard.

Assignees

• Wacker Chemie Ag

Inventors

• Bauers Florian
• Kaiser Stephan

Classifications

• C08F218/08 Primary

  Vinyl acetate · CPC title

• B32B37/12 Primary

  characterised by using adhesives · CPC title

• C09J131/04 Primary

  Homopolymers or copolymers of vinyl acetate · CPC title

• C08K2003/265

  Calcium, strontium or barium carbonate · CPC title

• B32B37/14

  characterised by the properties of the layers · CPC title