The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 17, 1990

Filed:

Apr. 11, 1988
Applicant:
Inventors:

Atsushi Kawakatsu, Takasago, JP;

Ryuichi Takagi, Akashi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08K / ; C08L / ;
U.S. Cl.
CPC ...
523334 ; 524227 ; 524230 ; 524310 ; 524313 ; 524322 ; 524504 ; 524532 ; 525 83 ; 525 84 ; 525 85 ; 525 86 ; 525315 ; 525316 ;
Abstract

A process for improving properties of a synthetic resin powder by subjecting a latex of a graft-copolymer whose back bone is a rubber to coagulation, and adding a lubricant to the graft-copolymer in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of said graft-copolymer, and then removing water. The bulk specific gravity of a synthetic resin powder produced is large, the flowability and blocking resistance are remarkably improved in comparison with known methods and blocking during storage is prevented. Lines for transporting the powder do not become packed with the resin powder. It is possible to automatically weigh the resin powder, and the powder does not exhibit a tendency to increase in volume during mass transport.


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