Novel-heat resistant adhesives
US4831077A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1988 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Sep 2, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2301/302
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous adhesive dispersion containing, based on the total weight of the dispersion, 40 to 65% by weight of a copolymer formed by radical copolymerization of ethylene, acrylic esters having alkyl groups of 4 to 12 carbon atoms, vinyl acetate, ethylenically unsaturated carboxylic acid, ethylenically unsaturated hydroxyalkyl functional compounds, (meth-)-acrylamide and, optionally, other mono- or poly-ethylenically unsaturated compounds, using emulsion polymerization and having a glass-transition temperature of from -20.degree. to -60.degree. C. and a K value of from 50 to 180 characterized in that the copolymer was produced from: PA1 (a) 5 to 25% by weight of ethylene, PA1 (b) 95 to 75% by weight of comonomer mixture comprising PA2 (b1) 40 to 64% by weight of acrylic ester(s), PA2 (b2) 33 to 55% by weight of vinyl acetate, PA2 (b3) 1 to 5% by weight of ethylenically unsaturated carboxylic acids, PA2 (b4) 1 to 8% by weight of ethylenically unsaturated hydroxyalkyl functional compounds, PA2 (b5) 0.05 to 0.8% by weight of at least one member of the group consisting of acrylamide and methacrylamide, PA2 (b6) 0 to 2% by weight of other mono- or poly-ethylenically unsaturated compounds…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.