Process for the production of expanded particles of a polyolefin

Details Process for the production of expanded particles of a polyolefin Process for the production of expanded particles of a polyolefin

1990-08-28

1991-12-10

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 58, C08J 9228

Patent

active

050718835

ABSTRACT:
A process for the production of expanded resin particles is disclosed, wherein an aqueous dispersion containing expandable particles of a polyolefin resin is discharged at a temperature higher than the softening point of the resin from a high pressure condition to a low pressure condition to expand the expandable particles and wherein the expandable particles contain fine particles of an inorganic material coated with an agent selected from isopropyltriisostearic titanate, tetraoctadecyl titanate, acetoalkoxyaluminum diisopropylates, stearic acid, methyltrimethoxysilane, methyltriethoxysilane, ethyltriethoxysilane, phenyltriethoxysilane and vinyltriethoxysilane.

REFERENCES:
patent: 4676939 (1987-06-01), Kuwabara et al.

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