Highly resilient polyurethane elastomer

Details Highly resilient polyurethane elastomer Highly resilient polyurethane elastomer

1985-02-28

1986-08-12

Cockeram, Herbert S.

Ordnance

Rocket launching

Having tubular guide means

528 65, 528 66, F41F 304, C08G 1832

Patent

active

046049401

ABSTRACT:
A resilient polyurethane elastomer structural member is made from (A) a prepolymer prepared from a composition consisting essentially of 2.60 moles to 2.80 moles of 4,4'-diphenylmethane diisocyanate, and about 0.23 mole to about 0.31 mole of a low molecular weight triol, per 1.0 mole of polyoxytetramethylene glycol, and (B) hydroquinone di-(.beta.-hydroxyethyl) ether, as a chain extender. This polyurethane elastomer can be used to make annular missile shock isolator pads useful for the land based, MX (Peacekeeper) missile.

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I&EC Product Research & Development, "Polymer Composition and Structural Design", M. A. Mendelsohn et al., vol. 10, Mar. 1971, pp. 14-25.
I&EC Product Research & Development, "Chemical and Engineering Properties of Polyurethane Isolater Pads", M. A. Mendelsohn et al., vol. 14, Sep. 1975, pp. 181-189.
Resins for Aerospace, C. A. May Ed., A.S.C. Symposium Series 132, American Chemical Society, 1980, chapters 14-15.

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