Pressure sensitive adhesive compositions comprising a mixture of terpolymers
US4185050A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1978 |
| Grant date | Jan 22, 1980 |
| Priority date | — |
| Expiry date | Dec 26, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is disclosed a pressure sensitive adhesive composition having improved adhesive strength and tack. This adhesive composition comprises three terpolymers, each terpolymer comprising an alkyl acrylate wherein the alkyl group contains four to fourteen carbon atoms, a vinyl ester of a saturated carboxylic acid having from one to six carbon atoms, and an ethylenically unsaturated carboxylic acid having three to five carbon atoms. The composition of terpolymers comprises a mixture of three of the terpolymers described above wherein each individual terpolymer has a different number average molecular weight. The final terpolymer composition has a specifically defined number average molecular weight, and a specifically defined molecular weight distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.