Process for working additive into polymers, particularly polymer

Details Process for working additive into polymers, particularly polymer Process for working additive into polymers, particularly polymer

1977-10-03

1979-05-08

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

260 4256, 260874, 260897A, 260899, 521134, 521139, 521908, 521920, C08J 900

Patent

active

041537629

ABSTRACT:
The invention relates to a process for working additives into polymers, in which a mixture of thermoplastics with additives is heated to a temperature sufficient for the melting process, with the possible introduction of an expanding agent into the melt in which the expanding agent is homogenized, the melt being cooled if necessary to a temperature at which it can be extruded in the form of a foam plastic, the additives being adsorbed on a polymer flocculent matrix having a sufficient specific area, due to having a density of up to 0.6 g/cm.sup.3 and 15 to 99% of open foam cells and being of the same or different polymer composition as the basic polymer.

REFERENCES:
patent: 2907075 (1959-10-01), Newly
patent: 3090763 (1963-05-01), Hillier
patent: 3213071 (1965-10-01), Campbell
patent: 3291762 (1966-12-01), Raymond
patent: 3371053 (1968-02-01), Raskin
patent: 3563923 (1971-02-01), Buss et al.
patent: 3775353 (1973-11-01), Kohne, Jr. et al.
patent: 3786004 (1974-01-01), Furuya et al.
patent: 3855160 (1974-12-01), Shiotsu et al.
patent: 3857801 (1974-12-01), Kulas et al.
patent: 3879314 (1975-04-01), Gunning et al.
patent: 3950471 (1976-04-01), Stastny et al.
Union Carbide, "Chemically Loaded Molecular Sieves", Aug. 1959, pp. 1-6.

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