IP Library › Granted Patent US 7,034,087
Granted Patent B2
US 7,034,087 · App. 10/919,487 · Granted Apr 25, 2006

Aldehyde scavengers for preparing temporary wet strength resins with longer shelf life

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Quick Facts
Patent No.
US 7,034,087
App. No.
10/919,487
Granted
Apr 25, 2006
Kind
B2
Abstract

Aldehyde scavengers which are adducts of choline or a choline salt and an optionally substituted acrylamide monomer can be used to stabilize glyoxalated polyacrylamide compositions and to provide supplementary cationic charges for the polymer backbone.

Claims (7)

1. A glyoxalated polyacrylamide composition of improved stability comprising a glyoxalated polyacrylamide and an aldehyde scavenger having the structure:

wherein:

R 1 is hydrogen or C 1 –C 2 alkyl;

R 2 is hydrogen or C 1 –C 4 alkyl; and

A − is a compatible anion.

2. Paper strengthened with the glyoxalated polyacrylamide composition of claim 1 .

3. The glyoxalated polyacrylamide composition of claim 1 wherein R 1 and R 2 are each hydrogen and A − is chloride.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 1, 2018
From: GEORGIA-PACIFIC CHEMICALS LLC
To: ECOLAB USA INC.
Reel/Frame 045221/0768 →