Graft polymers of polymers containing vinyl ester and/or vinyl alcohol
units and ethylenically unsaturated compounds, their preparation and
their use
    7.
    发明授权
    Graft polymers of polymers containing vinyl ester and/or vinyl alcohol units and ethylenically unsaturated compounds, their preparation and their use 失效
    含有乙烯基酯和/或乙烯醇单元和烯键式不饱和化合物的聚合物的接枝聚合物,其制备及其应用

    公开(公告)号:US6060566A

    公开(公告)日:2000-05-09

    申请号:US983141

    申请日:1998-01-21

    摘要: Graft polymers are obtainable by free radical polymerization of(A) monomers or monomer mixtures comprising(a) from 1 to 100% by weight of N-vinylcarboxamides of the formula ##STR1## where R.sup.1 and R.sup.2 are each H or C.sub.1 -C.sub.6 -alkyl, (b) from 0 to 99% by weight of other monoethylenically unsaturated monomers copolymerizable with the monomers (a) and(c) from 0 to 5% by weight of monomers having at least two ethylenically unsaturated, nonconjugated double bonds in the molecule,in the presence of(B) polymers which contain units of vinyl esters of saturated C.sub.1 -C.sub.4 -carboxylic acids and/or vinyl alcohol units, or of mixtures which contain these polymers and polymers having at least 3 alkylene oxide units or polytetrahydrofuran,in a weight ratio (A):(B) of from 95:5 to 10:90 and, if required, subsequent elimination of the group ##STR2## from the polymerized monomers (I) of the graft polymer with formation of units of the formula ##STR3## and the graft polymers described above are used in the production of paper, board and cardboard as dry and wet strength agents, as retention and drainage aids and as promoters in diketene sizing and as starch cationization agents, as dispersants for pigments and as creping assistants in the production of tissue papers.

    摘要翻译: PCT No.PCT / EP96 / 02991 Sec。 371日期1998年1月21日 102(e)1998年1月21日PCT PCT 1996年7月9日PCT公布。 第WO97 / 04014号公报 日期1997年2月6日通过(A)单体或单体混合物的自由基聚合获得接枝聚合物,所述单体或单体混合物包含(a)1至100重量%的下式的N-乙烯基甲酰胺其中R 1和R 2各自为H或C 1 -C 6 - 烷基,(b)0至99重量%的可与单体(a)和(c)共聚的其它单烯属不饱和单体,0至5重量%的具有至少两个烯属不饱和的非共轭双键的单体 分子,在(B)包含饱和C 1 -C 4羧酸和/或乙烯醇单元的乙烯基酯单元的聚合物存在下,或包含这些聚合物和具有至少3个烯化氧单元或聚四氢呋喃的聚合物的混合物的存在下, 在95:5至10:90的重量比(A):(B))中,如果需要,随后从形成下式的单元的接枝聚合物的聚合单体(I)中除去该基团, 上述接枝聚合物用于制备 纸,纸板和纸板作为干和湿强度剂,作为保留和引流助剂以及作为二烯酮上浆和淀粉阳离子化剂的促进剂,作为颜料的分散剂和用于生产薄纸的起皱助剂。