Isoprene-based hydrocarbon resin and adhesive composition containing the same
US5516835A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1993 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Sep 23, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2666/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An isoprene-based hydrocarbon resin having a softening point of from 60.degree. to 140.degree. C. and a number average molecular weight of from 500 to 2000 which is obtained by cationic polymerization of a monomer mixture comprising from 40 to 90% by weight of isoprene and from 10 to 60% by weight of an aliphatic monoolefin containing 4 to 10 carbon atoms in the presence of a Friedel-Crafts catalyst and an adhesive composition comprising 100 parts by weight of a base polymer selected from the group consisting of an amorphous propylene polymer, a block copolymer rubber and isoprene rubber and from 10 to 200 parts by weight of said isoprene-based hydrocarbon resin as a tackifier are disclosed. The isoprene-based hydrocarbon resin is excellent in hue and heat stability to provide an adhesive composition excellent in heat stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.