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    Novel light-sensitive copolyesters
    1.
    发明授权
    Novel light-sensitive copolyesters 失效
    新型光敏共聚酯

    公开(公告)号：US3873505A

    公开(公告)日：1975-03-25

    申请号：US41672473

    申请日：1973-11-16

    申请人： EASTMAN KODAK CO

    发明人： LAAKSO THOMAS M ,  VAN NICE HAROLD L

    IPC分类号： C08F283/01 ,  C08G63/52 ,  G03F7/038 ,  C08G17/10

    CPC分类号： G03F7/0388 ,  C08F283/01 ,  C08G63/52 ,  C08F2/46

    摘要： WHERE R is a lower alkyl group of 1 to 4 carbon atoms and R1 is an alkylidene, aralkylidene or heterocyclic group.

    There is described a novel group of light-sensitive copolyesters prepared by condensing at least one alkylene glycol of 2 to 12 carbon atoms with a mixture of bis-esters of dicarboxylic acids, from 30 to 70 mole percent of the bis-esters being the bis-ester of non-light-sensitive aromatic dicarboyxlic acid selected from terephthalic acid and isophthalic acid and from 70 to 30 mole percent of the bis-esters being a light-sensitive bis-ester having the formula:

    摘要翻译： 描述了通过将至少一个2至12个碳原子的亚烷基二醇与二羧酸的双酯的混合物缩合制备的一组新的光敏共聚酯，30-70摩尔％的双酯是双 非对称芳族二羧酸选自对苯二甲酸和间苯二甲酸的酯，和70至30摩尔％的双酯是具有下式的感光双酯：

    Alkali-soluble light sensitive polymers and compositions and processes for using such polymers
    2.
    发明授权
    Alkali-soluble light sensitive polymers and compositions and processes for using such polymers 失效
    ALKALI可溶性光敏聚合物及其组合物和使用这种聚合物的方法

    公开(公告)号：US3702765A

    公开(公告)日：1972-11-14

    申请号：US3702765D

    申请日：1970-10-13

    申请人： EASTMAN KODAK CO

    发明人： LAAKSO THOMAS M

    IPC分类号： C08F8/00 ,  G03F7/038 ,  G03C1/68 ,  G03C1/70

    CPC分类号： C08F8/00 ,  G03F7/0388

    摘要： NOVEL ALKALI-SOLUBLE LIGHT SENSITIVE POLYMERS ARE PREPARED BY A PROCESS INVOLVING THE CONTROLLED SAPONIFICATION OF A LIGHT SENSITIVE POLYESTER WHICH HAS BEEN PREPARED BY CONDENSATION OF A POLYMER CONTAINING GROUPS, SUCH AS HYDROXYL OR AMINO GROUPS, CONDENSIBLE WITH A LIGHT SENSITIVE DICARBOXYLIC ACID REACTANT WHEREIN ONE OF THE CARBOXYL GROUPS HAS BEEN BLOCKED BY CONVERSION TO THE ESTER, E.G., WITH THE HALF ESTER-HALF ACID CHLORIDE OF THE LIGHT SENSITIVE DICARBOXYLIC ACID. THESE ALKALI-SOLUBLE POLYMERS ARE USEFUL IN PHOTOSENSITIVE COMPOSITIONS AND ELEMENTS TO PREPARE PHOTOMECHANICAL IMAGES SUCH AS LITHOGRAPHIC PRINTING PLATES, RESISTS, AND THE LIKE.