Method of making lightweight thermoplastic elastomer and product

Details Method of making lightweight thermoplastic elastomer and product Method of making lightweight thermoplastic elastomer and product

1984-03-21

1985-12-03

Jacobs, Lewis T.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

523218, 523219, 523351, 524534, C08K 340

Patent

active

045566038

ABSTRACT:
A lightweight, thermoplastic elastomer composition is prepared by mixing a thermoplastic elastomer, such as a styrene/butadiene block copolymer, an extender oil and, optionally, at least part of a dense, particulate filler such as silica, at an elevated temperature to form a viscous, liquid masterbatch and, thereafter, mixing hollow microspheres, such as hollow glass micropheres, and all or the remainder of a dense, particulate filler, if any, with the masterbatch at an elevated temperature to form the lightweight, thermoplastic elastomer composition. The thermoplastic elastomer composition is preferably formed into a flexible, lightweight sheet-type structure particularly suitable for use as a sound or heat insulating material for automotive, aircraft and construction uses.

REFERENCES:
patent: 3317455 (1967-05-01), Blome et al.
patent: 3553002 (1971-01-01), Haraway et al.
patent: 3823109 (1974-07-01), Middlebrook
patent: 3826776 (1974-07-01), Wright
patent: 3959545 (1976-05-01), Siedenstrang
patent: 4085937 (1978-04-01), Schenk
patent: 4186234 (1980-01-01), Sakashita et al.
patent: 4368828 (1983-01-01), Samuel et al.

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