High modulus polyurea elastomers prepared with amine-initiated p

Details High modulus polyurea elastomers prepared with amine-initiated p High modulus polyurea elastomers prepared with amine-initiated p

1985-01-22

1986-06-17

Welsh, Maurice J.

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...

252182, 528 77, 528 78, C08G 1832

Patent

active

045957436

ABSTRACT:
A polyurea or polyurea-polyurethane elastomer which is the reaction product of reaction mixture comprising (a) an organic polyisocyanate, (b) a low equivalent weight aromatic amine chain extender in an amount from about 15 to 60 parts by weight based on the weight of isocyanate reactive components present in said reaction mixture, (c) an amount of an amine-initiated polyol sufficient to provide the elastomer with a measurably decreased brittleness at demold as compared to a similar elastomer prepared in the absence of said amine initiated polyol.

REFERENCES:
patent: 4298701 (1981-11-01), Meyborg et al.
patent: 4442235 (1984-04-01), Taylor et al.

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