摘要:
A polyurethane corresponding to the formula: ##STR1## wherein Q is a divalent, mononuclear or dinuclear aromatic radial which is unsubstituted or is substituted by lower alkyl groups and which can contain, as a linking member, a lower alkylene group,X is one of the groups --O--Ph--Z--Ph--O-- and --OOC--(CH.sub.2).sub.y --COO--,Ph being an optionally substituted phenylene group,Z being an alkylene group having 1--4 carbon atoms andy being a number from 2 to 12,R is a hydrogen atom or a methyl group,Y is an alkylene radical having 2-6 carbon atoms,m is an integer from 4 to 50n is an integer from 1 to 6 ando is an integer from 4 to 20having the properties of thermolasts and being hardenable to give elastic products. It is suitable for use as a hardenable constituent of photopolymerizable materials.
摘要:
A polyurethane corresponding to the formula: ##STR1## wherein Q is a divalent, mononuclear or dinuclear aromatic radial which is unsubstituted or is substituted by lower alkyl groups and which can contain, as a linking member, a lower alkylene group,X is one of the groups --O--Ph--Z--Ph--O-- and --OOC--(CH.sub.2).sub.y --COO--,Ph being an optionally substituted phenylene group,Z being an alkylene group having 1-4 carbon atoms and y being a number from 2 to 12,R is a hydrogen atom or a methyl group,Y is an alkylene radical having 2-6 carbon atoms,m is an integer from 4 to 50n is an integer from 1 to 6 ando is an integer from 4 to 20having the properties of thermoplasts and being hardenable to give elastic products. It is suitable for use as a hardenable constituent of photopolymerizable materials.
摘要:
A radiation-polymerizable mixture comprising a compound having at least two terminal ethylenically unsaturated groups which can form a crosslinked polymer by means of free-radical initiated addition polymerization, a polymeric binder, a radiation activatable polymerization initiator, and a compound having two epoxy groups in the molecule and a molecular weight of not more than 1,500; and a photopolymerizable copying material having a flexible transparent temporary support and a transferrable thermoplastic photopolymerizable layer comprising the above-described radiation-polymerizable mixture.
摘要:
The present invention relates to a radiation-polymerizable mixture which includes a polymerizable compound, a polymeric binder which has units of methacrylic acid, a methacrylic acid ester and a styrene, the latter in a proportion of 40 to 65% by weight, a finely divided mineral pigment on a silicic acid or silicate basis, a photopolymerization initiator, a compound having at least two epoxy groups in its molecule and a thermal hardener for epoxy groups. The mixture is advantageous, in particular, for producing solder masks and can be cured after exposure to an image and development by heating to about 80.degree. to 150.degree. C. to form a stencil which is resistant under soldering conditions.
摘要:
The present invention relates to a radiation-polymerizable mixture which includes a polymerizable compound, a polymeric binder which has units of methacrylic acid, a methacrylic acid ester and a styrene, the latter in a proportion of 40 to 65% by weight, a finely divided mineral pigment on a silicic acid or silicate basis, a photopolymerization initiator, a compound having at least two epoxy groups in its molecule and a thermal hardener for epoxy groups. The mixture is advantageous, in particular, for producing solder masks and can be cured after exposure to an image and development by heating to about 80.degree. to 150.degree. C. to form a stencil which is resistant under soldering conditions.
摘要:
A radiation-sensitive composition is disclosed which comprises: (a) a polymeric binder comprised of an alkenyl phenol monomer; (b) a compound which forms a strong acid under the action of actinic radiation; and (c) a compound which contains at least one acid-cleavable C-O-C bond and has a solubility in a liquid developer which is increased by the action of acid. The composition yields positive-working recording layers which are more flexible than layers comprising known novolak binders.
摘要:
A radiation-sensitive mixture which contains(A) a polymer comprised of repeat units represented by the formula ##STR1## where R is a hydrogen or a halogen atom, a cyanide group or an alkyl group of 1-4 carbon atoms,R.sup.1, R.sup.2 are identical or different, and eachand R.sup.3 denotes a hydrogen or a halogen atom, an alkyl group, an alkoxy group, an alkoxycarbonyl group, an acyl group, an aryloxy group, an aroyl group or aralkyl group,R.sup.4 is a hydrogen atom or a divalent organic group which is linked to another unit represented by formula (I),X denotes an oxygen atom or one of the groups NR.sup.8, OCH.sub.2 CHOHCH.sub.2 OCO, OCH.sub.2 CH.sub.2 O and OCH.sub.2 CH.sub.2 OCO, where R.sup.8 is a hydrogen atom, alkyl or aryl group andA denotes the atoms required for completing a mononuclear or dinuclear carbocyclic or heterocyclic aromatic ring system,(B) a combination of(a) a compound which forms a strong acid under the action of actinic radiation and(b) a compound which has at least one acid-cleavable C--O--C bond and the solubility of which in a liquid developer is increased by the action of acid,is suitable for preparing printing plates and dry photoresists.
摘要翻译:一种辐射敏感性混合物,其包含(A)由式(I)表示的重复单元组成的聚合物,其中R是氢或卤素原子,氰基或1-4个碳原子的烷基, R 1,R 2相同或不同,R 3表示氢或卤素原子,烷基,烷氧基,烷氧基羰基,酰基,芳氧基,芳酰基或芳烷基,R 4表示 氢原子或连接到由式(I)表示的另一单元的二价有机基团,X表示氧原子或NR8,OCH2CHOHCH2OCO,OCH2CH2O和OCH2CH2OCO之一,其中R8是氢原子,烷基或芳基, A表示完成单核或双核碳环或杂环芳环体系所需的原子,(B)(a)在光化辐射作用下形成强酸的化合物和(b)至少具有至少 一个酸可裂解的COC键和w的溶解度 在液体显影剂中由于酸的作用而增加,适用于制备印刷版和干燥光致抗蚀剂。