Microcellular polyurethane foams having integral skin

Details Microcellular polyurethane foams having integral skin Microcellular polyurethane foams having integral skin

1984-02-15

1985-06-18

Cockeram, Herbert S.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283155, 252182, 521115, 521 51, 521905, 521912, 524728, 528 52, 560 26, B32B 2900, B32B 325, C08J 934, C08G 1814

Patent

active

045241023

ABSTRACT:
There are provided a wide range of polyurethane products, e.g., cellular, dense elastomer, and integral skin microcellular products, obtained by the reaction of (a) a polyisocyanate compound, (b) a polyol, (c) optionally a chain extender and/or blowing agent with/without other known additives, (d) in the presence of a non-hydroxyl flow modifier characterized by carbon and hydrogen atoms, at least one and, generally, a plurality of oxyalkylene groups, and at least one urethane, ##STR1## group. Several of the polyurethane products exhibit unique properties, e.g., foamed articles with capability to conduct static electricity, soft elastomers characterized by improved coefficient of friction, etc. Several classes of the flow modifiers are novel per se. The polyurethane products can be synthesized via the one shot or prepolymer process. Multipackage systems, in particular, two and three component systems are useful in molding operations, e.g., manufacture of shoe soles.

REFERENCES:
patent: 3839413 (1974-10-01), Wolff et al.
patent: 3993697 (1976-01-01), Fujii et al.
patent: 4189544 (1980-02-01), Thompson
patent: 4287307 (1981-09-01), Hostettler
patent: 4288577 (1981-09-01), McShane
patent: 4334032 (1982-06-01), Patton et al.
patent: 4334052 (1982-06-01), Patton et al.
patent: 4469616 (1984-09-01), Hostettler

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