Polymer compositions useful as dye complexing agents, and processes for preparing same
AssigneeReilly Industries, Inc.
InventorsRamiah Murugan, Eric F. V. Scriven, James R. Stout, Stephanie Syler Metrick
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Abstract
Described are preferred processes for preparing quaternary amine polymers of good color, comprising preparing a free base amine polymer by polymerizing a free base amine monomer in the presence of a water-soluble azo initiator, and subjecting the resultant polymer to quaternization conditions. Also described are unique, water-soluble quaternary amine polymers obtainable by such processes, and dye complexing polymer blends useful in the manufacture of detergents.
Claims21
A process for preparing a water-soluble polyvinylpyridine quaternary polymer, the process comprising:
- polymerizing a vinylpyridine monomer in the presence of a water-soluble azo initiator, to form a polyvinylpyridine polymer having a weight average molecular weight of about 2,000 to about 1,000,000;
- and
- quaternizing said vinylpyridine polymer, so as to form a polyvinylpyridine quaternary polymer.
A process for preparing a water-soluble polyvinylpyridine quaternary polymer, the process comprising:
- providing a polyvinylpyridine polymer having a weight average molecular weight of about 2,000 to about 1,000,000, said polyvinylpyridine polymer having been prepared by polymerizing a vinylpyridine monomer in the presence of an azo intitiator;
- and
- quaternizing the polyvinylpyridine polymer to form a polyvinylpyridine quaternary polymer.
A polymer composition, comprising a water-soluble polyvinylpyridine polymer, the polymer having at least one terminal group having the formula
- wherein R2 and R3 are, independently, alkyl with 1 to 3 carbons or cyano, and R4 is a group of the formula
- wherein R5 and R6 are H or alkyl and can together form a ring, R1 is as defined above, and R7 is H or R1 as defined above, and o and p are 0 or 1, or of the formula:
- wherein n is an integer from 0 to 5, Y is OH or a group of the formula:
- wherein q is 0 or 1, R8 and R9 are H, alkyl or hydroxyalkyl, and R1 is as defined above.
A polymer composition, comprising a water-soluble polyvinylpyridine polymer obtainable by a process comprising polymerizing a vinylpyridine monomer in an aqueous medium in the presence of an azo initiator to form a vinylpyridine polymer, and quaternizing the vinylpyridine polymer.
A polymer composition, comprising a mixture including a first polymeric amine dye transfer agent and a second polymeric amine dye transfer agent.
A process for preparing a free base polyvinylpyridine polymer, the process comprising:
- polymerizing a vinylpyridine monomer to form a polyvinylpyridine polymer having a weight average molecular weight of about 2,000 to about 1,000,000, said polymerizing conducted homogeneously in a solvent containing a water-miscible organic solvent and in the presence of a water-soluble azo initiator having the formula:
- wherein R2 and R3 are, independently, alkyl with 1 to 3 carbons or cyano, and R4 is a group of the formula
- wherein R5, R6 and R7 are H or alkyl and R5 and R6 can together form a ring, or R4 is a group of the formula
- wherein n is an integer from 0 to 5, and Y is OH or a group of the formula:
- wherein R8 and R9 are H, alkyl or hydroxyalkyl, or a salt thereof.
Dependencies are inferred from the claim text.