1.
    发明专利
    未知

    公开(公告)号:DE19681695T1

    公开(公告)日:1998-11-05

    申请号:DE19681695

    申请日:1996-12-12

    Abstract: A polymerizable composition consisting essentially of about 50 to about 90% by weight of vinylpyrrolidone monomer, about 10 to about 50% by weight of vinyl caprolactam monomer, and about 0.5 to about 7% by weight of a crosslinker, which is capable of proliferous polymerization in the absence of base at about 80 DEG -120 DEG C.

    3.
    发明专利
    未知

    公开(公告)号:DE19681695B4

    公开(公告)日:2007-01-25

    申请号:DE19681695

    申请日:1996-12-12

    Abstract: A polymerizable composition consisting essentially of about 50 to about 90% by weight of vinylpyrrolidone monomer, about 10 to about 50% by weight of vinyl caprolactam monomer, and about 0.5 to about 7% by weight of a crosslinker, which is capable of proliferous polymerization in the absence of base at about 80 DEG -120 DEG C.

    4.
    发明专利
    未知

    公开(公告)号:DE19681707T1

    公开(公告)日:1999-01-28

    申请号:DE19681707

    申请日:1996-12-12

    Abstract: Strongly swellable, moderately crosslinked poly(vinyl pyrrolidone/vinyl acetate) copolymer (XL-PVP/VA) in the form of fine, white powders characterized by (a) an aqueous gel volume of about 15 to 150 ml/g of polymer, (b) a Brookfield viscosity in 5% aqueous solution of at least about 10,000 cps, and (c) being prepared directly by precipitation polymerization of VP and VA monomers in the presence of a crosslinking agent in the amount of about 0.1 to about 2% by weight of VP and VA.

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