Aqueous polymer emulsions useful as wallcovering prepaste adhesives
US5387641A · kind A · utility
Inventors
Key dates
| Filing date | May 25, 1993 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | May 25, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A stable aqueous emulsion comprising: PA1 (1) between about 20 and about 50% weight percent synthetic polymer solids, said solids comprising a copolymer or a terpolymer derived from: PA2 (a) between about 60 and about 90 mole percent of a vinyl ester, optionally including vinyl alcohol derived from said vinyl ester; PA2 (b) between about 10 and about 40 mole percent of one or more water soluble monomers; and PA2 (c) between about 0 and about 10 mole percent of an alkyl acrylate or alkyl methacrylate wherein alkyl represents an alkyl group containing between 1 and 20 carbon atoms; PA1 (2) between about 0.5 and about 5.0 weight percent of one or more surfactants or protective colloids; and PA1 (3) the balance water; wherein said aqueous emulsion has a viscosity of less than 1000 cps at 25.degree. C. and wherein said emulsion can provide adhesive properties and a process for producing the emulsion is provided. The emulsion is particularly suited for use as a wallpaper prepaste adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.