Process for preparing a polymer alloy, molded product, and react

Details Process for preparing a polymer alloy, molded product, and react Process for preparing a polymer alloy, molded product, and react

1985-10-15

1988-05-03

Pertilla, Theodore E.

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

Synthetic resins

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

264240, 26433119, 525453, 525454, 525903, C08L 7500

Patent

active

047421282

ABSTRACT:
The present invention provides a molded product composed of a polymer alloy of a polyamide polymer and at least one polyurethane polymer, polyurea polymer, and/or polyisocyanurate polymer. The polymer alloy is an interpenetrated network of different polymers, a semi-interpenetrating network of different polymers, or a polyblend of different polymers.
Reactant streams containing the compounds for forming the polymers of the polymer alloy are admixed to form a reaction mixture. The liquid reaction mixture is preferably a substantially homogeneous mixture of the reactant compounds. Each reactant stream thus contains only a portion of the components required to obtain the polymer alloy product. The resulting mixture is then rapidly introduced into a mold wherein chemical reaction takes place and the polymer alloy forms. Preferably, the mold is heated. The solid polymer alloy product is then recovered from the mold.

REFERENCES:
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patent: 4396729 (1983-08-01), Dominquez et al.
patent: 4613440 (1986-09-01), Zupancic et al.
patent: 4695483 (1987-09-01), Zupancic et al.
patent: 4695509 (1987-09-01), Cordova et al.
Lloyd et al., "Polyurethane RIM: A Competitive Plastic Molding Process", ACS Symposium Series 270, pp. 15-24 (1985).
Johnson et al., Shell Polymers, vol. 7, No. 3, 1983, pp. 75-79, "Reaction Injection Moulding Reviewed.
Sperling, "Recent Advances in Interpenetrating Polymer Networks" Polymer Engineering and Science, vol. 25, No. 9, pp. 517-520 (Jun. 1985).
Sperling, Interpenetrating Polymer Networks and Related Materials, pp. 202-204, 243-261, (Plenum Press, 1981).
Walsh et al., editors, Polymer Blends and Mixtures, pp. 267-287 (1985), 27 Polymer Preprints No. 1, pp. 495-496 (Apr. 1986).

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