Process for the preparation of cellular and non-cellular polyure

Details Process for the preparation of cellular and non-cellular polyure Process for the preparation of cellular and non-cellular polyure

1982-07-01

1984-04-03

Cockeram, H. S.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

26432818, 521174, 521914, 528 76, C08G 1814, C08G 1848

Patent

active

044407050

ABSTRACT:
A process for the preparation of optionally cellular and non-cellular polyurethane elastomers, preferably by reaction injection molding, organic polyisocyanates, polyether polyols based on polyoxyalkylene polyether polyols with terminal hydroxyethylene groups and an ethoxylation degree of 1 to 13, having a content of primary hydroxyl groups at the corresponding degree of ethoxylation as the value of curve A to 100 percent with curve A describing the dependency of the primary hydroxyl group content upon the degree of ethoxylation are reacted with chain extenders and/or cross-linking agents in the presence of catalysts as well as optionally blowing agents, auxiliaries and additives.

REFERENCES:
patent: 3887505 (1975-06-01), Demou et al.
patent: 4243760 (1981-01-01), McDaniel et al.
patent: 4272618 (1981-06-01), Dominguez et al.
patent: 4273884 (1981-06-01), Dominguez
patent: 4365025 (1982-12-01), Murch et al.

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