Polyurethane resin and heat-sensitive recording medium

Details Polyurethane resin and heat-sensitive recording medium Polyurethane resin and heat-sensitive recording medium

1988-12-06

1990-07-17

Marquis, Melvin I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

525440, 525446, 525453, 525458, 525459, 525443, C08G 7704

Patent

active

049422120

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.

REFERENCES:
patent: 4728690 (1988-03-01), Lammerting et al.
patent: 4766194 (1988-08-01), Robertson

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