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    • 5. 发明授权
    • Polyvinyl acetals having azido groups and use thereof in radiation-sensitive compositions
    • 具有叠氮基的聚乙烯醇缩醛及其在辐射敏感组合物中的应用
    • US06596460B2
    • 2003-07-22
    • US09751183
    • 2000-12-29
    • Hans-Joachim TimpeUrsula Müller
    • Hans-Joachim TimpeUrsula Müller
    • G03C173
    • B41C1/1008B41C1/1016B41C2201/02B41C2201/14B41C2210/04B41C2210/06B41C2210/24Y10S430/106Y10S430/107Y10S430/108Y10S430/11Y10S430/111Y10S430/145
    • A copolymer useful in radiation sensitive compositions for lithographic printing plates comprises the units A, B, C and D, wherein A is present in an amount of 0.5 to 30 wt.-% and is of the formula wherein R is hydrogen, C1-C4 alkyl, —CH═COOH or B is present in an amount of 5 to 35 wt.-% and is of the formula C is present in an amount of 10 to 55 wt. % and is of the formula wherein R1 is an alkyl group with up to 4 carbons, which is optionally substituted by an acid group, or a phenyl group to which an acid group is attached, wherein the phenyl group optionally comprises 1 to 2 further substituents selected from halogen atoms, amino, methoxy, ethoxy, methyl and ethyl groups, or is a group Z—NR2—CO—Y—COOH, wherein Z is an aliphatic, aromatic or araliphatic spacer group, R2 is hydrogen or an aliphatic, aromatic or an araliphatic moiety and Y is a saturated or unsaturated chain- or ring-shaped spacer group, and unit C may have one or more occurrences in the copolymer with various moieties R1 independent of one another; and D is present in an amount of 10 to 40 wt.-% and is of the formula wherein X is C1-C6 alkylene, a 5 or 6 membered saturated carbocyclic moiety optionally substituted with one or more substituents selected from the group consisting of C1-C4 alkyl, C1-C4 alkoxy or halogen, a 5 or 6 membered saturated heterocyclic moiety which comprises in the nucleus one or more heteroatoms selected from oxygen, nitrogen and sulfur, or a group of the formula I wherein n is an integer from 0 to 4 and each R3 is independently selected from the group consisting of C1-C4 alkyl, halogen or C1-C4 alkoxy.
    • 可用于平版印刷版的辐射敏感组合物中的共聚物包括单元A,B,C和D,其中A以0.5至30重量%的量存在,并且其中R为氢,C 1 -C 4烷基 ,-CH = COOH或B以5〜35重量%的量存在,并且式C的存在量为10〜55重量%。 %,并且是其中R 1是具有至多4个碳的烷基,其任选被酸基或与其连接的酸基的苯基取代,其中苯基任选地包含1至2个另外的取代基 或卤素原子,氨基,甲氧基,乙氧基,甲基和乙基,或为Z-NR2-CO-Y-COOH基团,其中Z为脂族,芳族或芳脂族间隔基,R2为氢或脂族,芳族或 芳脂族部分,Y是饱和或不饱和的链或环形间隔基,并且单元C可以在共聚物中具有一个或多个不同部分R1彼此独立地出现; 并且D以10至40重量%的量存在,并且其为X为C 1 -C 6亚烷基的5或6元饱和碳环部分,其任选被一个或多个选自以下的取代基取代:C 1 -C 4 烷基,C 1 -C 4烷氧基或卤素,5或6元饱和杂环部分,其在核中包含一个或多个选自氧,氮和硫的杂原子,或式I的基团,其中n为0至4的整数, 每个R 3独立地选自C 1 -C 4烷基,卤素或C 1 -C 4烷氧基。