Radiation crosslinked elastomers
US5407971A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1994 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Jan 26, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S522/905
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are radiation-crosslinkable elastomeric compositions containing: PA1 (a) an elastomeric polymer containing abstractable hydrogen atoms in an amount sufficient to enable the elastomeric polymer to undergo crosslinking in the presence of a suitable radiation-activatable crosslinking agent; and PA1 (b) a radiation-activatable crosslinking agent of the formula: ##STR1## wherein: W represents --O--, --N--, or --S--; PA1 X represents CH.sub.3 -- or ##STR2## Y represents a ketone, ester, or amide functionality; Z represents an organic spacer which does not contain hydrogen atoms that are more photoabstractable than hydrogen atoms of the elastomeric polymer; PA1 m represents an integer of 0 to 6; PA1 a represents 0 or 1; and PA1 n represents an integer of 2 or greater. Radiation-crosslinked elastomers are prepared by exposing the radiation-crosslinkable elastomeric compositions to radiation (e.g., UV light) to abstract hydrogen atoms from the elastomeric polymer by the resulting radiation-activated crosslinking agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.