Thermoplastic eraser

Details Thermoplastic eraser Thermoplastic eraser

1981-02-10

1982-09-21

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525 97, C08K 536

Patent

active

043507875

ABSTRACT:
An eraser composed of conventional fillers and additives and, in addition, a binder of a styrene-isoprene-styrene block copolymer. The eraser composition does not require any aftertreatment, e.g., vulcanization, and can be fabricated into erasers utilizing single equipment.

REFERENCES:
patent: 3607819 (1971-09-01), Beckman
patent: 3614836 (1971-10-01), Snyder
patent: 3738951 (1973-06-01), Middlebrook
patent: 4096203 (1978-06-01), St. Clair
patent: 4107124 (1978-08-01), Himes

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