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.
Patent No.:
Date of Patent:
Feb. 11, 1992
Filed:
Mar. 09, 1990
Applicant:
Inventors:
Assignee:
Mitsubishi Petrochemical Company Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C08K / ;
U.S. Cl.
CPC ...
524493 ; 524492 ; 523220 ;
Abstract
A highly water-absorptive powdery polymer composition comprising a mixture of a highly water-absorptive powdery polymer and a porous powder of a high-purity silicon dioxide, said powder having (a) a mean particle size of 0.1 to 30 .mu.m as measured by the Coulter counter method and (b) a specific surface area of 500 m.sup.2 /g or more as measured by the BET (Brunauer-Emmett-Teller) method.