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:
Mar. 07, 1989
Filed:
Oct. 06, 1987
Shigehiko Yoshioka, Akashi, JP;
Tsuneo Yoshida, Nagaoka, JP;
Hisatake Sato, Yokohama, JP;
Hideto Yamada, Akashi, JP;
Yoshio Adachi, Nishinomiya, JP;
Seiko Kagaku Kogyo Co., Ltd., all of, JP;
Nippon Oil Co., Ltd., all of, JP;
Hokuetsu Paper Mills, Ltd., all of, JP;
Abstract
A composition for a sizing agent comprising (a) 70-99.9 wt.% of a substituted alkyl succinic anhydride or a substituted alkenyl succinic anhydride or a mixture of these succinic anhydrides, and (b) 0.1-30 wt.% of phosphates of polyoxyethylene alkyl ether esters or phosphates of polyoxyethylene alkyl aryl ether esters of a mixture of these phosphate esters and a process for using the composition by dispersing the composition, adding the produced aqueous dispersion to pulse alurry of paper making material, and making the paper. This composition for the sizing agent has excellent storage stability and underwater self-emulsion, and accordingly exhibits an excellent sizing effect and provides paper having an excellent sizing effect.