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EP-0976769-A2-20000202
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"EP0976769"; "EP 0976769"; "C08F 220/00"; "Hydrosoluble acrylic copolymers"
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Acrylic copolymers containing the following repeating units: [image] wherein R A, R B, R C, R I, R II, equal or different, are H or CH 3; M + is H or a cation belonging to group IA, IIA, or ammonium; n is an integer from 0 to 2; A 0 is -COO-(R T0) m-R Z wherein R T is a saturated C 2-C 4 alkyl group, m is an integer from 7 to 50, R Z is H or a saturated C 1-C 4 alkyl group; R III is H, COOH, COO -M + wherein M + is as above defined or A 0 as above defined; and optionally containing a third comonomer in a quantity 0-20% of the total monomer weight, said polymers, that contain in terminal position silanol groups, are obtainable by copolymerizing the monomers in the presence of the following chain transfer agents: (A) SH-R o-Si(R IB) NB(OR IA) NA, wherein R IA is hydrogen or a saturated C 1 - C 3 alkyl, R IB is C 1-C 3 alkyl, NB is an integer and is 1 or zero, NA is an integer and is 2 or 3, R o, is a linear or branched alkylenic chain from 1 to 20 carbon atoms, or a mixture of (A) with (B) phosphorous I-III inorganic acids or their salts.
Acrylic copolymers containing the following repeating units: [image] wherein R A, R B, R C, R I, R II, equal or different, are H or CH 3; M + is H or a cation belonging to group IA, IIA, or ammonium; n is an integer from 0 to 2; A 0 is -COO-(R T0) m-R Z wherein R T is a saturated C 2-C 4 alkyl group, m is an integer from 7 to 50, R Z is H or a saturated C 1-C 4 alkyl group; R III is H, COOH, COO -M + wherein M + is as above defined or A 0 as above defined; and optionally containing a third comonomer in a quantity 0-20% of the total monomer weight, said polymers, that contain in terminal position silanol groups, are obtainable by copolymerizing the monomers in the presence of the following chain transfer agents: (A) SH-R o-Si(R IB) NB(OR IA) NA, wherein R IA is hydrogen or a saturated C 1 - C 3 alkyl, R IB is C 1-C 3 alkyl, NB is an integer and is 1 or zero, NA is an integer and is 2 or 3, R o, is a linear or branched alkylenic chain from 1 to 20 carbon atoms, or a mixture of (A) with (B) phosphorous I-III inorganic acids or their salts.
en
European Patent Office
EP0976769
EP 0976769
C08F 220/00
Hydrosoluble acrylic copolymers
Hydrosoluble acrylic copolymers - European Patent Office - EP 0976769 A2
Hydrosoluble acrylic copolymers - European Patent Office - EP 0976769 A2
EUROPEAN PATENT APPLICATION
17
EP
0976769
A2
2000-02-02
99114821.4
1999-07-29
IT
MI981793
1998-07-31
C08F 220/00 A
Elf Atochem Italia S.r.l.
Marciandi, Franco
Collette, Christian
Sama, Daniele, Dr. et al
Hydrosoluble acrylic copolymers
Wasserlösliche Acrylcopolymere
Hydrosoluble acrylic copolymers
Copolymères acryliques hydrosolubles
Acrylic copolymers containing the following repeating units: [image] wherein R A, R B, R C, R I, R II, equal or different, are H or CH 3; M + is H or a cation belonging to group IA, IIA, or ammonium; n is an integer from 0 to 2; A 0 is -COO-(R T0) m-R Z wherein R T is a saturated C 2-C 4 alkyl group, m is an integer from 7 to 50, R Z is H or a saturated C 1-C 4 alkyl group; R III is H, COOH, COO -M + wherein M + is as above defined or A 0 as above defined; and optionally containing a third comonomer in a quantity 0-20% of the total monomer weight, said polymers, that contain in terminal position silanol groups, are obtainable by copolymerizing the monomers in the presence of the following chain transfer agents: (A) SH-R o-Si(R IB) NB(OR IA) NA, wherein R IA is hydrogen or a saturated C 1 - C 3 alkyl, R IB is C 1-C 3 alkyl, NB is an integer and is 1 or zero, NA is an integer and is 2 or 3, R o, is a linear or branched alkylenic chain from 1 to 20 carbon atoms, or a mixture of (A) with (B) phosphorous I-III inorganic acids or their salts.
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