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:
Jun. 14, 1977
Filed:
Feb. 27, 1975
Applicant:
Inventors:
Seizo Nakashio, Nishinomiya, JA;
Kozo Tsuji, Ibaragi, JA;
Nobuhiro Toyota, Ibaragi, JA;
Fumio Fujita, Osaka, JA;
Assignees:
Sumitomo Chemical Company, Limited, Osaka, JA;
Hayashibara Biochemical Laboratories, Incorporated, BOTH OF, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07H / ;
U.S. Cl.
CPC ...
536120 ; 536-1 ;
Abstract
A molded pullulan can be water-insolubilized by treatment with, as the combination of a crosslinking agent with a catalyst, at least one of the combinations of (1) formaldehyde with zinc chloride, (2) glyoxal with magnesium chloride, and (3) formaldehyde or glyoxal with hydrogen chloride gas or sulfurous acid gas.