US2013274369A1PendingUtilityA1
New cationic polymers
Est. expiryApr 13, 2032(~5.8 yrs left)· nominal 20-yr term from priority
C08F 220/34C08F 226/02C08F 226/04C08F 222/38
48
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
New water soluble cationic copolymers derived from N-vinyl amide monomers and ethylenically unsaturated compounds bearing cationic groups.
Claims
exact text as granted — not AI-modified1 . A copolymer P comprising in polymerized form,
a) at least one compound of formula I
wherein R 1 and R 2 are independently H or C 1 , C 2 or C 3 alkyl, and
b) at least one compound of formula II
wherein R 3 is H or C 1 , C 2 or C 3 alkyl,
Y is
R 4 is an aliphatic or cycloaliphatic or aromatic group bearing a positive charge,
R 5 and R 6 are independently C 1 to C 3 alkyl, and
X − is an anion,
wherein a molar ratio of components a) to b) is 5:95 to 45:65.
2 . A copolymer P comprising, in polymerized form,
a) at least one compound of formula I
wherein R 1 and R 2 are independently H or C 1 , C 2 or C 3 alkyl, and
b) at least one compound of formula II
wherein R 3 is H or C 1 , C 2 or C 3 alkyl,
Y is
R 4 is an aliphatic or cycloaliphatic or aromatic group bearing a positive charge,
R 5 and R 6 are independently C 1 to C 3 alkyl, and
X − is an anion,
wherein a molar ratio of components a) to b) is 5:95 to 80:20,
and wherein the copolymer P has an average molecular weight Mw of 5,000,000 to 100,000,000.
3 . A copolymer P comprising, in polymerized form,
a) at least one compound of formula I
wherein R 1 and R 2 are independently H or C 1 , C 2 or C 3 alkyl, and
b) at least one compound of formula II
wherein R 3 is H or C 1 , C 2 or C 3 alkyl,
Y is
R 4 is an aliphatic or cycloaliphatic or aromatic group bearing a positive charge,
R 5 and R 6 are independently C 1 to C 3 alkyl, and
X − is an anion,
wherein a molar ratio of components a) to b) is 5:95 to 80:20,
and wherein said copolymer P has an intrinsic viscosity of 3 to 30 dl/g.
4 . The copolymer according to claim 1 , wherein component b) comprises a quaternary ammonium group.
5 . The copolymer according to claim 1 , wherein component b) is an ester or an amide of acrylic acid or methacrylic acid.
6 . The copolymer according to claim 1 , wherein component b) is
wherein R 3 is H or C 1 , C 2 or C 3 alkyl, R 5 , R 6 and R 7 are independently C 1 to C 3 alkyl, n is a number from 1 to 8, and X − is an anion.
7 . The copolymer according to claim 1 , wherein component a) is vinylformamide.
8 . A process for manufacturing the copolymer P of claim 1 , comprising performing inverse emulsion polymerization, gel polymerization or bead polymerization to obtain the copolymer P.
9 . The process of claim 8 , wherein the polymerization is initiated by at least one selected from the group consisting of a thermal initiator, a redox initiator, UV irradiation and microwave irradiation.
10 . A copolymer HP comprising, in polymerized form:
a) at least one compound of formula I
wherein R 1 and R 2 are independently H or C 1 , C 2 or C 3 alkyl,
b) at least one compound of formula II
wherein R 3 is H or C 1 , C 2 or C 3 alkyl,
Y is
R 4 is an aliphatic or cycloaliphatic or aromatic group bearing a positive charge,
R 5 and R 6 are independently C 1 to C 3 alkyl,
X − is an anion,
with the proviso that a total amount of compounds in which Y is COOH does not exceed 80 molar % of a total amount of compounds making up component b), and
c) at least one compound of formula III
wherein the copolymer has a stoichiometric composition of A x B y C z , wherein A, B and C represent components a), b) and c) in polymerized form, and wherein a molar ratio of (x+z):y is from 5:95 to 45:65 and a molar ratio of x:z is 0 to 100000.
11 . A copolymer HP comprising in polymerized form:
a) at least one compound of formula I
wherein R 1 and R 2 are independently H or C 1 , C 2 or C 3 alkyl,
b) at least one compound of formula II
wherein R 3 is H or C 1 , C 2 or C 3 alkyl,
Y is
R 4 is an aliphatic or cycloaliphatic or aromatic group bearing a positive charge,
R 5 and R 6 are independently C 1 to C 3 alkyl,
X − is an anion,
with the proviso that a total amount of compounds in which Y is COOH does not exceed 80 molar % of a total amount of compounds making up component b), and
c) at least one compound of formula III
wherein the copolymer has a stoichiometric composition of A x B y C z , wherein A, B and C represent components a), b) and c) in polymerized form, and wherein a molar ratio of (x+z):y is from 5:95 to 80:20, a molar ratio of x:z is 0 to 100000 and wherein the copolymer HP has an average molecular weight of 5,000,000 to 100,000,000.
12 . A process for manufacturing the copolymer HP of claim 10 , comprising partial or complete hydrolysis of a copolymer to obtain the copolymer HP.
13 . A flocculant comprising the copolymer of claim 1 .
14 . A drainage/retention aid or a flux enhancer comprising the copolymer of claim 1 .
15 . The copolymer according to claim 2 , wherein component b) comprises a quaternary ammonium group.
16 . The copolymer according to claim 3 , wherein component b) comprises a quaternary ammonium group.
17 . The copolymer according to claim 2 , wherein component b) is an ester or an amide of acrylic acid or methacrylic acid.
18 . The copolymer according to claim 3 , wherein component b) is an ester or an amide of acrylic acid or methacrylic acid.
19 . The copolymer according to claim 2 , wherein component b) is
wherein R 3 is H or C 1 , C 2 or C 3 alkyl, R 5 , R 6 and R 7 are independently C 1 to C 3 alkyl, n is a number from 1 to 8, and X − is an anion.
20 . The copolymer according to claim 3 , wherein component b) is
wherein R 3 is H or C 1 , C 2 or C 3 alkyl, R 5 , R 6 and R 7 are independently C 1 to C 3 alkyl, n is a number from 1 to 8, and X − is an anion.Cited by (0)
No later patents cite this yet.
References (0)
No backward citations on record.