Tackifiers for elastomers
US4073776A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1975 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | Jan 28, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A tackifier system which includes the reaction product of oxirane bearing materials with alkyl phenol novolacs for elastomers of alpha-olefin polymers which are sulfur curable. The invention is directed to reaction products of alkyl phenol novolacs with oxirane bearing materials. The reaction products of alkyl phenol novolacs with oxirane bearing materials have been found to be excellent tackifiers for various types of elastomers. Further, the invention is directed to elastomer compositions containing reaction products of alkyl phenol novolacs with oxirane bearing materials. Elastomer compositions containing the reaction products of alkyl phenol novolac resins with oxirane bearing materials exhibit excellent tack properties. Tackifiers are employed in elastomeric compositions to produce wider practical ranges of elastomer properties, such as stiffness and tack. Tackifiers are used to improve adhesion, and sometimes cohesion without necessarily stiffening or softening the elastomer composition. The tackifiers of the invention are particularly useful in elastomer products which require green tack in their construction. These elastomers include hydrocarbon or hydrocarbon-acrylonitrile…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.