Polyurethane-epoxy interpenetrating polymer network acoustic dam

Details Polyurethane-epoxy interpenetrating polymer network acoustic dam Polyurethane-epoxy interpenetrating polymer network acoustic dam

1991-08-28

1994-07-19

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

523400, 524701, 525528, 525903, C08F28304

Patent

active

053310624

ABSTRACT:
Improved acoustic damping materials comprise interpenetrating polymer netks having a soft polymer component and a hard polymer component. The soft polymer component, constituting from 50 to 90 percent by weight of the material, is a polyurethane made by polymerization of a diisocyanate with a polyether glycol, and the hard polymer component is made by polymerization of bisphenol A diglycidyl ether, with boron trichloride amine complex as a curing agent.

REFERENCES:
patent: 3894169 (1975-07-01), Miller
patent: 3941725 (1976-03-01), Schmitter et al.
patent: 4302553 (1981-11-01), Frisch et al.
patent: 4613543 (1986-09-01), Dabi
patent: 4766183 (1988-08-01), Rizk et al.
patent: 9923934 (1990-05-01), Werner

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