Phenolic modified resorcinolic resins for rubber compounding
US6828383B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2003 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Feb 18, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L61/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A vulcanizable rubber composition comprises (a) a rubber component; (b) a methylene donor compound; and (c) a methylene acceptor comprising a blend of a high ortho-ortho bonded phenolic novolak resin and a resorcinolic resin. The resin blend can be made by a number of methods. For example, it can be prepared by first reacting one or more phenolic compounds represented by the following formula: where R is selected from the group consisting of H, an alkyl group chain of 1-16 carbon atoms and an aralkyl group of 8-12 carbon atoms with an aldehyde in the presence of an ortho directing catalyst and then combining a resorcinol-formaldehyde novolak resin to obtain a phenolic and resorcinolic novolak resin blend.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.