Monomer and polymerization process
AssigneeBASF SE
InventorsWalter H. Ohrbom, Patricia A. Herrel
Life of this patent
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Abstract
The β-hydroxy carbamate, ethylenically unsaturated monomer of the invention can be polymerized as a homopolymer or copolymerized with other monomers. The polymerization can be carried out in an aqueous medium. The β-hydroxy carbamate monomer is polymerized to form water-soluble homopolymers or, if polymerized as a mixture with one or more comonomers, copolymers that are soluble, emulsifiable, or dispersible in water. The β-hydroxy carbamate monomer can be used as a replacement monomer for acrylamide.
Claims16
A compound having a structure
- 4
- wherein either each R2 is hydrogen or one R2 is hydrogen and the other R2 is methyl;
- n is from 1 to about 4;
- and one of Y and Z is OH and the other of Y and Z is
- 5
- wherein R1 is H or alkyl.
A compound having a structure
- 6
- wherein R2 is hydrogen or methyl and one of Y and Z is OH and the other of Y and Z is
- 7
- , wherein R1 is H or alkyl.
A homopolymer having a repeating structure
- 8
- wherein either each R2 is hydrogen or one R2 is hydrogen and the other R2 is methyl;
- n is from 1 to about 4;
- and one of Y and Z is OH and the other of Y and Z is
- 9
- , wherein R1 is H or alkyl.
A method of preparing an aqueous composition, comprising a step of dispersing a hydrophobic polymer using a polymer having a structure
- 10
- wherein either each R2 is hydrogen or one R2 is hydrogen and the other R2 is methyl;
- n is from 1 to about 4;
- and one of Y and Z is OH and the other of Y and Z is
- 11
- , wherein R1 is H or alkyl.
A method of preparing a polymer, comprising a step of polymerizing a β-hydroxy carbamate compound having a structure
- 12
- wherein either each R2 is hydrogen or one R2 is hydrogen and the other R2 is methyl;
- n is from 1 to about 4;
- and one of Y and Z is OH and the other of Y and Z is
- 13
- , wherein R1 is H or alkyl, with at least one comonomer.
An addition polymerization method, comprising steps of:
- (a) providing a reaction medium comprising ammonia or a primary amine, and
- (b) polymerizing a monomer having a structure
- 14
- wherein either each R2 is hydrogen or one R2 is hydrogen and the other R2 is methyl;
- n is from 1 to about 4;
- and one of Y and Z is OH
- 15
- and the other of Y and Z is wherein R1 is H or alkyl.
Dependencies are inferred from the claim text.