Process for producing polyurethane elastomers

Details Process for producing polyurethane elastomers Process for producing polyurethane elastomers

1993-02-10

1996-03-05

Seidleck, James J.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

25218227, 25218228, 528 60, 528 65, 528 66, 528 745, 528 76, 528 77, 528 79, 528 80, 528 81, 528 83, 528 85, C08G 1832, C08G 1842, C08G 1848

Patent

active

054964962

ABSTRACT:
A method for producing a polyurethane elastomer which comprises reacting (1) either a polyisocyanate and a polyol or an isocyanate-terminated prepolymer obtainable by reacting said polyisocyanate with said polyol with (2) a diol of general formula ##STR1## wherein A.sub.1 and A.sub.2 are the same or different and each represents a bond, --O-- or --COO--; R.sub.1 and R.sub.2 are the same or different and each represents C.sub.1-6 alkylene; X.sub.1 and X.sub.2 are the same or different and each represents H or hydroxyalkyl and (3) a triol having a hydroxyl equivalent of 60 to 500, gives a polyurethane elastomer with improved tensile strength, tear strength and other mechanical properties.

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patent: 4956439 (1990-09-01), Tong et al.
patent: 5021534 (1991-06-01), Kawasaki et al.
patent: 5066762 (1991-11-01), Ohbuchi et al.

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