Ecofriendly cationic polyelectrolytes

Details Ecofriendly cationic polyelectrolytes Ecofriendly cationic polyelectrolytes

2008-05-20

2008-05-20

Pezzuto, Helen L (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S292100, C526S292600, C526S307200, C526S307300, C526S307700, C526S312000, C524S829000, C524S831000, C524S833000, C210S609000, C210S734000, C210S735000

Reexamination Certificate

active

07375173

ABSTRACT:
The invention relates to cationic water-soluble polyelectrolytes, especially terpolymers, which are obtained by polymerising monomers of (meth)acrylamide, a quaternised (meth)acrylamide derivative, a (meth)acrylic acid derivative and/or hydrolysis-stable cationic monomers. The composition of the polyelectrolytes is characterised by a toxicity index formula Fi=(QTP−2QME)/10≦1 wherein QTP represents the total cationic charge of the polymer and QME represents the charge part of the ester type monomer. The invention also relates to the production and use of said polyelectrolytes and water-in-water polymer dispersions which contain said polyelectrolytes.

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