Photo-curable polymer composition and flexographic printing plates containing the same
    1.
    发明授权
    Photo-curable polymer composition and flexographic printing plates containing the same 有权
    光固化聚合物组合物和含有它们的柔版印刷版

    公开(公告)号:US06326127B1

    公开(公告)日:2001-12-04

    申请号:US09464147

    申请日:1999-12-16

    IPC分类号: G03F7038

    摘要: The present invention relates to a photo-curable polymer composition comprising (a) a first block copolymer comprising at least two blocks A of polymerised monovinyl aromatic monomer, at least one internal block B of polymerised conjugated diene monomer, and at least one tapered or random block C of polymerised monovinyl aromatic monomer and polymerised conjugated diene monomer and/or at least one block D which may be a block of polymerised conjugated diene monomer or a tapered or random block of polymerised monovinyl aromatic monomer and polymerised conjugated diene monomer, wherein block C is an internal polymer block adjacent a terminal block A or an internal block A which is adjacent to a terminal block D, and block D is a terminal block adjacent an internal block A, and, optionally, a residue of a coupling agent, wherein the residue, if present, is derived from a coupling agent containing alkoxy or epoxy functional groups; and (b) a photo-initiator. The present invention further relates to a flexographic printing plate precursor comprising a photo-curable layer sandwiched between two release films or a release film and a support. In addition, the present invention relates to a cured polymer composition, obtainable by curing the photo-curable composition; to a flexographic printing plate containing the cured polymer composition, and to a process for printing on a substrate with the flexographic printing plate.

    摘要翻译: 本发明涉及光固化聚合物组合物,其包含(a)第一嵌段共聚物,其包含至少两个聚合的单乙烯基芳族单体的嵌段A,至少一个聚合的共轭二烯单体的内部嵌段B和至少一个渐缩的或随机的 聚合的单乙烯基芳族单体和聚合的共轭二烯单体的嵌段C和/或至少一个嵌段D,其可以是聚合的共轭二烯单体的嵌段或聚合的单乙烯基芳族单体和聚合的共轭二烯单体的渐缩或无规嵌段,其中嵌段C 是与端子块A相邻的内部聚合物嵌段或与端子块D相邻的内部块A,并且嵌段D是与内部嵌段A相邻的末端嵌段,以及任选的偶联剂的残基,其中, 残留物(如果存在)衍生自含有烷氧基或环氧官能团的偶联剂; 和(b)光引发剂。 本发明还涉及柔性版印刷版前体,其包含夹在两个释放膜或剥离膜和支持体之间的可光固化层。 另外,本发明涉及通过使光固化性组合物固化得到的固化聚合物组合物, 涉及含有固化的聚合物组合物的柔版印刷版,以及用柔版印刷版在基材上印刷的方法。

    Vinyl aromatic block copolymers and compositions containing them
    3.
    发明授权
    Vinyl aromatic block copolymers and compositions containing them 失效
    乙烯基芳族嵌段共聚物和含有它们的组合物

    公开(公告)号:US5777039A

    公开(公告)日:1998-07-07

    申请号:US795223

    申请日:1997-02-05

    CPC分类号: C08F297/044 C09J153/02

    摘要: Block copolymers suitable for hot melt adhesive composition characterized in that they have the general formula (AB).sub.p (B.sup.1).sub.q X, wherein A is poly(vinylaromatic) block and B and B.sup.1 are the same or different poly(butadiene) blocks, wherein the 1,2 addition (vinyl) content is in the range of from 25 to 70% by weight, wherein X is the residue of a multivalent coupling agent having a maximum of active sites (m) in the range of from 3 to 6, wherein p and q both are integers of from 0 to m, provided that the sum of p and q values is less than m and the coupling efficiency is less than 90%, said block copolymer having an average total vinyl aromatic content in the range of from 10 to 50 wt % and preferably in the range of from 10 to 30 wt %, and having a total apparent molecular weight in the range of from 100,000 to 500,000. Adhesive, sealant, or coating compositions comprising said block copolymers and in particular radiation curable compositions, the use of said compositions, and processes for the preparation of said block copolymers are also included herein.

    摘要翻译: 适用于热熔粘合剂组合物的嵌段共聚物,其特征在于它们具有通式(AB)p(B1)qX,其中A是聚(乙烯基芳族化合物)嵌段,B和B1是相同或不同的聚(丁二烯)嵌段,其中 1,2加成(乙烯基)含量在25〜70重量%的范围内,其中X是活性位点(m)的最大值在3至6范围内的多价偶联剂的残基,其中 p和q均为0至m的整数,条件是p值和q值之和小于m,耦合效率小于90%,所述嵌段共聚物的平均总乙烯基芳族化合物含量范围为 10〜50重量%,优选为10〜30重量%,总表观分子量为100,000〜500,000。 包含所述嵌段共聚物,特别是可辐射固化组合物的粘合剂,密封剂或涂料组合物,所述组合物的用途和制备所述嵌段共聚物的方法也包括在本文中。