Liquid dispersion comprising dibenzylidene sorbital acetals and

Details Liquid dispersion comprising dibenzylidene sorbital acetals and Liquid dispersion comprising dibenzylidene sorbital acetals and

1998-09-04

2000-08-15

Yoon, Tae

Compositions: coating or plastic

Coating or plastic compositions

Fat, fatty oil, fatty oil acid or salt thereof containing

10628735, 106316, 524367, C08L 9100

Patent

active

061029998

ABSTRACT:
This invention relates to a fluid dispersion of at least one dibenzylidene sorbitol acetal derivative. The sorbitol acetal derivative is useful as a clarifying agent for polyolefins and the inventive fluid dispersion permits improvements in the handling and processing of and mixing within the polyolefin composition. The inventive dispersion must be shelf stable, retain its nucleating effects, be compatible with polypropylene (and other polyolefins), and possess both short-term and long-term viscosities which permit acceptable transport through a standard polyolefin-manufacturing peristaltic pump. The preferred inventive dispersion thus comprises 3,4-DMDBS and at least one ethoxylated nonionic surfactant having an HLB of greater than about 8.5. Preferred surfactants include those selected from the group consisting essentially of ethoxylated sorbitan (C.sub.8 -C.sub.22) monoesters and ethoxylated nonyl-phenol ethers. The inventive dispersion may be introduced within any polyolefin composition, preferably polypropylene, which may then be molded into any shape or form. A method of producing a polyolefin plastic utilizing the inventive dispersion is also provided.

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patent: 5908377 (1999-06-01), Fukuda
patent: 5964691 (1999-10-01), Mehl

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