Foamable resinous polymer compositions containing acid mixtures

Details Foamable resinous polymer compositions containing acid mixtures Foamable resinous polymer compositions containing acid mixtures

1976-06-16

1978-07-18

Woodberry, Edward M.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521143, 521178, 521 95, 521101, 521128, C08J 900

Patent

active

041014693

ABSTRACT:
A foamable polymer composition comprising a resinous polymer and a mixture of polycyclic aromatic polycarboxylic acids carrying nuclear nitro groups that is substantially soluble in acetone but substantially insoluble in water obtained as a result of the nitric acid oxidation of a carbonaceous material, such as coal.

REFERENCES:
patent: 2726262 (1955-12-01), Grosskinsky et al.
patent: 3153666 (1964-10-01), Higuchi et al.

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