Light stable elastomers having good dynamic properties

Details Light stable elastomers having good dynamic properties Light stable elastomers having good dynamic properties

1996-06-12

1998-02-03

Gorr, Rachel

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 48, 528 65, C08G 1824

Patent

active

057145628

ABSTRACT:
This invention relates to novel light stable elastomers which exhibit good dynamic properties, and a process for their preparation. These elastomers comprise the reaction product of an isocyanate propolymer, a chain extender, and a catalyst selected from i) solid delayed action catalysts having a melting point of greater than about 60.degree. C., ii) alkyl substituted organotin catalysts containing alkylmercaptide ligands, and which are liquid at room temperature, and iii) alkyl substituted organotin catalysts containing sulfur bridging groups, and which are liquid at room temperature.

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patent: 4523005 (1985-06-01), Szycher
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patent: 4621113 (1986-11-01), Collins
patent: 4822827 (1989-04-01), Bank et al.
patent: 5057543 (1991-10-01), Carwell
patent: 5208315 (1993-05-01), Seneker
Structure-Property Relationships of Transparent Aliphatic Polyurethane Elastomers From The Geometric Isomers of Methylene Bis(4-Cyclohexyl Isocyanate), by S.W. Wong and K.C. Frisch.
C.A. Bryrne, D.P. Mack and N.S. Schneider, Adv. Urethane Sci. Technol. 9, 77 (Month unavailable) 1984.
A Study of Aliphatic Polyurethane Elastomers Prepared From Diisocyanate Isomer Mixtures, by C.A. Byrne, D.P. Mack & J.M. Sloan, Rubber Chemistry & Technology, vol. 58, pp. 985-996 1985 (month unavailable).

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