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:
Apr. 13, 1993
Filed:
May. 30, 1991
Tomohiko Nakata, Kakogawa, JP;
Hirofumi Aoki, Himeji, JP;
Shoichi Yano, Kakogawa, JP;
Yoshihide Ishikawa, Himeji, JP;
Masao Hamada, Kakogawa, JP;
Harima Chemicals, Inc., Hyogo, JP;
Abstract
The present invention relates to a size composition which shows an excellent sizing effect in neutral to weakly acidic papermaking. Alkanol tertiary amine and fortified rosin, incorporated in the size composition of the present invention, even when prepared as dispersions using a dispersant, are extremely poor in sizing performance in the neutral pH range, whereas the size composition obtained by mixing these components in a ratio according to the present invention and dispersing them using a surfactant specified by the present invention offers an excellent sizing in the neutral to weakly acidic pH range.