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    • 20. 发明授权
    • Hydrosoluble acrylic copolymers
    • 可溶性丙烯酸共聚物
    • US6103789A
    • 2000-08-15
    • US362573
    • 1999-07-28
    • Franco MarciandiChristian Collette
    • Franco MarciandiChristian Collette
    • C04B24/26C04B103/32C08F4/32C08F220/04C08F220/06C08F220/36C08F290/06C04B7/00C08F2/38C08F4/42C08F20/02
    • C08F220/06C08F220/36
    • Acrylic copolymers containing the following repeating units: ##STR1## wherein R.sub.A, R.sub.B, R.sub.C, R.sub.I, R.sub.II, equal or different, are H or CH.sub.3 ; M.sup.+ is H or a cation belonging to group IA, IIA, or ammonium; n is an integer from 0 to 2; A.sub.0 is --COO--(R.sub.T O).sub.m --R.sub.Z wherein R.sub.T is a saturated C.sub.2 -C.sub.4 alkyl group, m is an integer from 7 to 50, R.sub.Z is H or a saturated C.sub.1 -C.sub.4 alkyl group; R.sub.III is H, COOH, COO.sup.- M.sup.+ wherein M.sup.+ is as above defined or A.sub.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.sub.o --Si(R.sub.IB).sub.NB (OR.sub.IA).sub.NA, wherein R.sub.IA is hydrogen or a saturated C.sub.1 -C.sub.3 alkyl, R.sub.IB is C.sub.1 -C.sub.3 alkyl, NB is an integer and is 1 or zero, NA is an integer and is 2 or 3, R.sub.o is a linear or branched alkylenic chain from 1 to 20 carbon atoms, or a mixture of (A) with (B) phosphorous.sup.I-III inorganic acids or their salts.
    • 含有以下重复单元的丙烯酸共聚物:其中RA,RB,RC,RI,RII等同或不同,为H或CH 3; M +是H或属于IA,IIA或铵的阳离子; n为0〜2的整数; A0为-COO-(RTO)m -RZ,其中RT为饱和C 2 -C 4烷基,m为7至50的整数,R Z为H或饱和C 1 -C 4烷基; R III是H,COOH,COO-M +,其中M +如上定义或如上定义的A0; 并且任选地含有总单体重量的0-20%的第三共聚单体,所述聚合物含有末端位置的硅烷醇基团,可通过在以下链转移剂存在下使单体共聚获得:(A)SH (RIB)NB(ORIA)NA,其中RIA为氢或饱和C1-C3烷基,RIB为C1-C3烷基,NB为整数,为1或0,NA为整数,为2或 3,Ro是1至20个碳原子的直链或支链亚烷基链,或(A)与(B)亚磷酸III-III无机酸或其盐的混合物。