Polypropylene foamed particles

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

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521 56, 521 57, 521 85, 521143, 521144, C08J 922

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active

045968330

ABSTRACT:
Substantially non-crosslinked polypropylene foamed particles having a bulk density of from 8 to 100 g/l and a particle diameter of from 1 to 5 mm and containing an organic sodium phosphate represented by the formula: ##STR1##

REFERENCES:
patent: 2989782 (1961-06-01), Barkhoff, Jr. et al.
patent: 3236681 (1966-02-01), Nempleos et al.

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