Process for granulating 2,2,6,6-tetramethylpiperidine-containing

Details Process for granulating 2,2,6,6-tetramethylpiperidine-containing Process for granulating 2,2,6,6-tetramethylpiperidine-containing

1991-09-12

1994-03-01

Langel, Wayne

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

23313R, 264140, 252401, 252403, 546188, 546190, B01J 220, C07D21100

Patent

active

052904954

ABSTRACT:
A process for producing granules of a 2,2,6,6-tetramethylpiperidine-containing light stabilizer, which comprises mixing a 2,2,6,6-tetramethylpiperidine-containing light stabilizer having a melting point of not less than 60.degree. C. with a lubricant selected from the group consisting of water and an aqueous solution of an alcohol having 1 to 4 carbon atoms, and granulating the resultant mixture while pressure is applied thereto. The granular light stabilizer product has low dusting property and excellent free-flowing property.

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English-language Translation of Japanese 62-110, 739, published May 1987.
Database WPIL, Week 9102, Derwent Publications Ltd., Londong, GB; AN 91-012476 & JP-A-2 286 857 (Adeka-Argus) Nov. 26, 1990.

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