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:
Jan. 03, 1978
Filed:
Jun. 15, 1976
Applicant:
Inventor:
Keith John Pickard, Widnes, EN;
Assignee:
Laporte Industries Limited, Luton, EN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21D / ;
U.S. Cl.
CPC ...
162158 ; 81156 ; 8181 ; 8189 ; 106199 ; 106243 ; 162179 ; 2603 / ; 536 30 ; 536 31 ;
Abstract
The present invention provides compositions for treating cellulosic materials, and in particular for sizing paper or waterproofing textiles containing as active ingredient a cyclic imide N-substituted by an hydrophobic acyl group and at least 10% by weight based on the cyclic imide of an aliphatic acid. Preferred acids contain from 14 to 26 carbon atoms and are preferably saturated monobasic acids. Preferably the compositions contain from 25 to 125% by weight of aliphatic acid based on the cyclic imide. The compositions are suitable for sizing aqueous paper pulp, and especially bleached sulphate pulp.