Michael addition adducts as additives for paper and papermaking

Details Michael addition adducts as additives for paper and papermaking Michael addition adducts as additives for paper and papermaking

2011-03-08

2011-03-08

Harlan, Robert D. (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S311000

Reexamination Certificate

active

07902312

ABSTRACT:
Several Michael addition adducts of vinylamines with α,β. -unsaturated alkyl carbonyl compounds including amides, esters and acids, particularly acrylamide are presented. Additionally, a process for producing these Michael addition adducts is described. These adducts are generally useful in the manufacture of paper and are particularly useful as dry strength additives to make paperboard products using a papermaking machine.

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BASF Chemical Company, “Polyvinylamine—BASF Innovations in Chemisrty”, Oct. 5, 2002.

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