Production of structural reaction injection molded polyurethane

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...

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528 77, C08G 1810

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active

057392471

ABSTRACT:
The present invention is directed to the production of molded polyurethane products having high flexural moduli (i.e. 1,000,000 psi or more) and high elongation wherein a reaction mixture is reacted in a closed mold. The reaction mixture comprises reacting a liquid, room temperature stable, isocyanate prepolymer with at least two hydroxy-functional polyethers having average hydroxyl functionalities of from 1.5 to 8 and number average molecular weights of from 350 to 1800, at least one hydroxyl functional organic material containing from 2 to 8 hydroxyl groups and having a number average molecular weight below 350 and at least two hydroxyl functional organic materials having average hydroxy functionalities of from 1.5 to 3 and having number average molecular weights of 4000 or more. The products are prepared from these processes using such specified isocyanate prepolymers and polyol blends.

REFERENCES:
patent: Re33609 (1991-06-01), Nodelman
patent: 4065410 (1977-12-01), Schafer et al.
patent: 4218543 (1980-08-01), Weber et al.
patent: 4269945 (1981-05-01), Vanderhider et al.
patent: 4341875 (1982-07-01), Visger et al.
patent: 4385133 (1983-05-01), Alberino et al.
patent: 4435349 (1984-03-01), Dominquez et al.
patent: 4442235 (1984-04-01), Taylor et al.
Journal of Cellular Plastics, Sep./Oct. 1981, pp. 268-273.

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