Polyurethane resin and heat-sensitive recording medium
US4942212A · kind A · utility
22Cited by
2References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 6, 1988 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Dec 6, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane resin is composed of a polyol component, a polyisocyanate component and optionally, a chain extender component. At least a portion of the polyol component or chain extender component is a siloxane polyol component represented by the following formula (1) and/or formula (2): ##STR1## wherein R means an alkyl group, R' denotes a hydrogen atom or C.sub.1-5 alkyl group, k, l and m stand for 1-250, 0-5 and 0-50 respectively, and n is an integer of 1-3 in the formula (1) and an integer of 2-3 in the formula (2). A thermal recording material containing the polyurethane resin as a heat-resistant layer is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.