Activation of blowing agents

Details Activation of blowing agents Activation of blowing agents

1980-06-04

1981-03-31

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264DIG5, 521 87, 521 88, 521 92, 521 93, 521 98, 521134, 521143, 521180, 521182, 521184, 521909, C08J 910

Patent

active

042594537

ABSTRACT:
A composition comprising a gas-expandable polymeric material and an activated hydrazodicarboxylate blowing agent, wherein the activator is selected from nickelbis(3,5-di-t-butyl-4-hydroxybenzoate), a mixture of 2-hydroxy-4-n-octoxybenzophenone and nickelbis(2-oxy-4-n-octoxybenzophenone), nickel stearate, nickel trifluoroacetylacetonate, [2,2'-thiobis(4-t-thiobis(4-t-octylphenolato)]nickel, nickelbis [O-ethyl-(3,5-di-t-butyl-4-hydroxybenzyl)phosphonate], nickelammoniumsulfate, ethylenediaminetetra(methylenephosphonic acid), and hexamethylenediaminetetra(methylenephosphonic acid).

REFERENCES:
patent: 3554937 (1971-01-01), Codus et al.
patent: 3876622 (1975-04-01), Motokawa et al.
patent: 3888801 (1975-06-01), Hunter

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