Radiation curable alk-1-enyl urethanyl prepolymers
US5373032A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1993 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Aug 18, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/675
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to alk-1-enyl etherurethanyl block prepolymers which are curable by cationically initiated radiation and which are defined by the formula ##STR1## wherein m has a value of from 1 to 25; A is C.sub.2 to C.sub.12 alkylene, C.sub.6 to C.sub.14 aryl, both groups optionally substituted with lower alkyl, halo lower alkyl, alkyleneoxy, halogen or aryl; R.sub.1 is alkylene containing from 1 to 6 carbon atoms; R.sub.2 is a saturated or unsaturated divalent radical containing from 1 to 14 carbon atoms and is selected from the group of alkylene, alkenylene and arylene, each group optionally substituted with oxygen, halogen, lower alkyl and/or hydroxy; R.sub.3 is hydrogen or C.sub.1 to C.sub.6 alkyl; R.sub.4 is C.sub.1 to C.sub.6 alkylene, C.sub.6 to C.sub.14 arylene, lower alkyl substituted phenylene or xylylene and R.sub.5 is hydrogen or C.sub.1 to C.sub.4 alkyl. The invention also relates to the method of preparing and curing the above prepolymer and to the use of the cured prepolymer as a hard, flexible protective coating possessing high density and superior resistance to abrasion and chemical attack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.