TITLE: ISOCYANATO-TERMINATED POLYSULFIDE POLYMERS AND PROCESSES FOR THEIR
PREPARATION
European Patent EP0025272
 B1

ABSTRACT:
Abstract not available for EP0025272
Abstract of corresponding document: US4238585
Fully and partially aryl amine terminated polysulfide polymers and
processes for their preparation and use are disclosed. The fully aryl
amine terminated products are curable with isocyanates to high
molecular weight polymers and are thus useful in molding and casting as
well as in sealants. The partially aryl amine terminated polymers may
be further reacted with polyisocyanates to form thiol terminated
polysulfide polymers containing urea chain segments. These compounds
are curable in the fashion of standard polysulfide polymers to form
firmer polymers. The partially aryl amine terminated polymers may be
also chain extended with isocyanate terminated urethane prepolymers.
These block copolymers may be cured by standard SH terminated
polysulfide polymer cure methods to prepare sealants of exceptional
resiliency and weather resistance.

INVENTORS:
Bertozzi, Eugene R.

APPLICATION NUMBER: EP19800302698
PUBLICATION DATE: 04/11/1984
FILING DATE: 08/06/1980

ASSIGNEE: THIOKOL CORPORATION
INTERNATIONAL CLASSES: C08G75/02; C08G18/52; C08G18/64; C08G59/40; C08G75/06; C08G75/14;
C08G18/00; C08G59/00; C08G75/00; (IPC1-7): C08G18/64; C08G18/77;
C08G75/16; C08J3/24
EUROPEAN CLASSES: C08G18/64H; C08G75/14