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    • 36. 发明授权
    • Retention aids for papermaking
    • 造纸用保留助剂
    • US5717046A
    • 1998-02-10
    • US583050
    • 1996-01-19
    • Jong Ho ShinSin Ho HanSay Kyoun Ow
    • Jong Ho ShinSin Ho HanSay Kyoun Ow
    • C08F20/34C08F20/52C08F20/54C08F24/00C08F26/00C08F26/02C08F30/02C08F30/08D21H17/37D21H21/10C08F16/12C08F20/18C08F20/58C08F20/60
    • D21H21/10
    • The present invention relates to retention aids for papermaking, in particular which comprise cationic multiarmed star-like polymers of formula (I): (D).sub.y --(A).brket open-st.B--(CH.sub.2).sub.n --(E).sub.p --(F).sub.q .brket close-st..sub.x (I) as an effective component to improve the retention of fines fraction by structural characteristics of multiarmed polymer chains connected with one starting point on the compound. In formula (I), A is ##STR1## B is --O-- or --COO--; D is --OH; E is ##STR2## F is ##STR3## wherein, R.sup.1 --R.sup.11 are independently hydrogen or alkyl; R.sub.a --R.sub.d are independently hydrogen or alkyl; X.sup.- is ##STR4## x is an integer selected from 3 to 24; y is an integer selected from 0 to 21; n is an integer selected from 3 to 6; p is an integer selected from 300 to 4000; and q is an integer selected from 0 to 1000.
    • PCT No.PCT / KR94 / 00097 Sec。 371日期1996年1月19日 102(e)1996年1月19日PCT PCT 1994年7月20日PCT公布。 出版物WO95 / 03450 日期:1995年2月2日本发明涉及造纸用助留剂,特别涉及式(I)的阳离子多臂星状聚合物:(D)y-(A)+547B-(CH2)n-(E )p-(F)q + 548×(I)作为有效成分,通过与化合物上的一个起始点连接的多臂聚合物链的结构特征来改善细小部分的保留。 在式(I)中,A为 或B为-O-或-COO-; D是-OH; E是 F是,其中R1-R11独立地是氢或烷基; R a -R d独立地是氢或烷基; X是 x是从3到24的整数; y是选自0至21的整数; n是选自3至6的整数; p是选自300至4000的整数; q为0〜1000的整数。
    • 38. 发明授权
    • Aqueous polymeric emulsions incorporating polymerized units of michael
adducts of N-vinylformamide
    • 加入N-乙烯基甲酰胺的迈克尔加合物的聚合单元的水性聚合物乳液
    • US5679738A
    • 1997-10-21
    • US489889
    • 1995-06-13
    • Richard Anthony BaffordNing ChenChung-Ling MaoWalter Louis RenzRobert Krantz Pinschmidt, Jr.
    • Richard Anthony BaffordNing ChenChung-Ling MaoWalter Louis RenzRobert Krantz Pinschmidt, Jr.
    • B01J31/02B01J31/12C07B61/00C07C233/47C08F26/00C08F26/02C08F226/02C08L39/00C08L39/02C09J137/00C09J139/02C08F114/18C08F126/00
    • C07C233/47C08F226/02C08F26/02
    • This invention pertains to aqueous emulsions containing water insoluble, vinyl polymer particles containing polymerized Michael adduct units of N-vinylformamide and to emulsions of vinyl acetate polymers containing said Michael adducts. These latex dispersions are prepared by the emulsion polymerization of a Michael adduct of N-vinylformamide, optionally with other ethylenically unsaturated monomers, e.g., vinyl acetate. The Michael adducts of N-vinylformamide are represented by the formula: ##STR1## where R is H or CH.sub.3, X=CN, O=CR.sub.1, O=COR.sub.1 or other electron withdrawing group such as SO.sub.3 M, SO.sub.3 R.sub.1 and NO.sub.2 wherein R.sub.1 is a linear or branched alkyl, cycloalkyl, heterocyclic, arylalkyl, alkyloxy or aryl group containing between 1 and about 20 carbon atoms and substituted derivatives thereof and M is an ion. The preferred Michael adduct N-vinyl amide monomers are unsaturated monomers consisting of the alkl 3-N-vinylformamidopropionates and alkyl 2-methyl-3-N-vinylformamidopropionates and represented by the formula: ##STR2## where R is hydrogen or methyl, and R.sup.1 is a linear or branched alkyl, cycloalkyl, heterocyclic, arylalkyl, alkyloxy or aryl group containing between 1 and about 20 carbon atoms.
    • 本发明涉及含有水不溶性的含有N-乙烯基甲酰胺的聚合迈克尔加合物单元的乙烯基聚合物颗粒和含有所述迈克尔加合物的乙酸乙烯酯聚合物乳液的含水乳液。 这些胶乳分散体通过N-乙烯基甲酰胺的迈克尔加成物,任选与其它烯属不饱和单体如乙酸乙烯酯的乳液聚合来制备。 N-乙烯基甲酰胺的迈克尔加成物由下式表示:其中R是H或CH 3,X = CN,O = CR 1,O = COR 1或其它吸电子基团如SO 3 M,SO 3 R 1和NO 2,其中R 1是 含有1至约20个碳原子的直链或支链烷基,环烷基,杂环,芳烷基,烷氧基或芳基及其取代衍生物,M是离子。 优选的迈克尔加合物N-乙烯基酰胺单体是由3-N-乙烯基甲酰胺丙酸烷基酯和2-甲基-3-N-乙烯基甲酰胺丙酸烷基酯组成的不饱和单体,由下式表示:其中R是氢或甲基,R1 是含有1至约20个碳原子的直链或支链烷基,环烷基,杂环,芳烷基,烷氧基或芳基。