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:
Aug. 13, 2013
Filed:
Nov. 18, 2009
Qu-ming Gu, Bear, DE (US);
Lloyd A. Lobo, Lincoln University, PA (US);
Erin A. S. Doherty, Hockessin, DE (US);
Huai N. Cheng, Metairie, CA (US);
Qu-Ming Gu, Bear, DE (US);
Lloyd A. Lobo, Lincoln University, PA (US);
Erin A. S. Doherty, Hockessin, DE (US);
Huai N. Cheng, Metairie, CA (US);
Hercules Incorporated, Wilmington, DE (US);
Abstract
Disclosed herein are hydrophobically-modified poly(aminoamides) useful as fixative detackifiers for stickies and pitch control in papermaking processes. These polymers are prepared via modification of amine-containing water-soluble poly(aminoamides) with reactive functional group-containing hydrophobic compounds. In particular, poly(aminoamides) may be modified, under appropriate reaction conditions, with long chain alkyl glycidyl ether, AKD (alkyl ketene dimer), ASA (alkyl succinyl anhydride), or Quab (3-chloro-2-hydroxypropyl-N,N,N-dimethylalkyl ammonium chloride). These novel polymers are effective in inhibiting deposition of organic contaminants in pulp and papermaking systems.