Gycol dispersion of calcium carbonate

Details Gycol dispersion of calcium carbonate Gycol dispersion of calcium carbonate

1988-06-21

1991-03-19

Lovering, Richard D.

Compositions

Inorganic luminescent compositions

Tungsten containing

524425, B01J 1300

Patent

active

050008714

ABSTRACT:
The present invention provides a glycol dispersion consisting of calcium carbonate and glycol prepared by wet grinding a glycol slurry composed of glycol and calcium carbonate surface-treated with at least one of surface treating agents selected from the group consisting of copolymers (A) of at least one of .alpha., .beta.-monoethylenically unsaturated carboxylic acids and their salts with .alpha., .beta.-monoethylenically unsaturated carboxylic acid esters and salts (B) of copolymers of .alpha., .beta.-monoethylencially unsaturated carboxylic acids with .alpha., .beta.-monoethylencially unsaturated carboxylic acid esters as material for wet grinding. The glycol dispersion of the present invention is good in dispersion stability in glycol as well as affinity with polyester and contributes to improvement of the surface properties of polyester. Furthermore, proper selection of a specific grade of calcium carbonate and specific grinding conditions enable provision of highly functional polyester products.

REFERENCES:
patent: 4693932 (1987-09-01), Kuze et al.
patent: 4727108 (1988-02-01), Kagiyama et al.
Derwent Abstract, C85-057874.
Patent Abstracts of Japan, vol. 9, No. 205, 60-71632(A).

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