Functional rubber-based structural adhesive compositions
US5256738A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1991 |
| Grant date | Oct 26, 1993 |
| Priority date | — |
| Expiry date | Dec 16, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/47
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A one-package stable rubber based curable composition contains: PA1 (a) a functional rubber polymer selected from the group consisting of functional homopolymers of polybutadiene, isoprene or neoprene; functional copolymers of polybutadiene, isoprene and/or neoprene; and functional copolymers of polybutadiene, neoprene or isoprene with an aliphatic or alicyclic unsaturated hydrocarbon; and PA1 (b) a vulcanization system comprising sulfur, wherein the composition contains at least 15 parts of functional rubber polymer per 100 parts of composition and at least 15 parts of sulfur per 100 parts of the total amount of all rubber polymers in the composition, with the proviso that the cured composition has an elongation not exceeding 15 percent and the functional groups present on the functional rubber polymer of (a) remain essentially unreacted during cure of the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.