Pressure-sensitive adhesive compositions and process for preparing them
US4145321A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1977 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Nov 14, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J113/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A pressure-sensitive adhesive composition with a low content of volatile liquids, such as organic solvents or water, comprises a maleinized liquid polybutadiene blended with one or more tackifying resins and one or more curing agents, suchas a blocked polyamine, the composition containing less than 20% by weight of volatile liquids. The liquid polybutadiene, which can be made by any conventional polymerization mechanism, is maleinized by reaction with meleic anhydride, and it is convenient to add the tackifying resin and any other ingredients of the composition to the maleinized liquid polybutadiene just after the maleinization reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.