摘要:
A photopolymerizable laminate comprising a photopolymerizable layer and a support layer, said photopolymerizable layer containing:
(1) 5 to 95% by weight, based on the total weight of the photopolymerizable layer, of a binder comprising a vinyl polymer or a vinyl copolymer, (2) 95 to 5% by weight, based on the total weight of the photopolymerizable layer, of a monomeric component containing at least 50% by weight of at least one compound selected from the group consisting of the photopolymerizable unsaturated compounds represented by the formulae (A), (B) and (C) shown below and having a value of molecular weight/number of double bonds contained of 1000 or less, and (3) 0.01 to 30% by weight, based on the total weight of the photopolymerizable layer, of a photopolymerization initiator.
摘要:
Disclosed is a polyimide precursor comprising a specific polyamic acid ester, polyamic amide or polyamic acid salt structure derived from a tetracarboxylic acid compound and a diamine compound, which can be converted by heating to a polyimide having low thermal stress. By blending a specific form of this novel polyimide precursor which has an ethylenic double bond, with a photopolymerization initiator, an excellent photopolymerizable composition can be obtained. Not only this precursor but also the crosslinked precursor obtained by the photopolymerization of the photopolymerizable composition can be converted by heating to a polyimide resin which has low thermal expansion coefficient, high heat resistance, excellent mechanical properties and satisfactory adhesion to a substrate. Hence, the precursor and the photopolymerizable composition can advantageously be utilized in the production of electrical and electronic components.
摘要:
Disclosed is a polyimide precursor comprising a specific polyamic acid ester, polyamic amide or polyamic acid salt structure derived from a tetracarboxylic acid compound and a diamine compound, which can be converted by heating to a polyimide having low thermal stress. By blending a specific form of this novel polyimide precursor which has an ethylenic double bond, with a photopolymerization initiator, an excellent photopolymerizable composition can be obtained. Not only this precursor but also the crosslinked precursor obtained by the photopolymerization of the photopolymerizable composition can be converted by heating to a polyimide resin which has low thermal expansion coefficient, high heat resistance, excellent mechanical properties and satisfactory adhesion to a substrate. Hence, the precursor and the photopolymerizable composition can advantageously be utilized in the production of electrical and electronic components.
摘要:
A heat-resistant photoresist film comprising, as the essential components, (a) a polymer consisting of recurring units represented by the formula wherein X is a tetravalent C 6-30 carbocyclic group or heterocyclic group; Y is a divalent C 6-30 carbocyclic group or heterocyclic group; A is -COOR or -COO⊖R'⊕ wherein each of R and R' is a compound having a reactive carbon-carbon double bond; and A is in the position ortho or peri with respect to the Z group, said polymer being capable of transforming into a polymer having a thermal decomposition temperature of at least 350 °C and a glass transition temperature of at most 350 °C in the heat treatment; (b) a compound having a reactive carbon-carbon double bond; and (c) a photopolymerization initiator.
摘要:
A process for preparing polyamides which comprises polycondensing dicarboxylic acids having the following general formula and diamines by using carbodiimides as the condensing agent. wherein X is a group having a valence of (m+2), and C 6-20 carboxylic group, C 3-20 heterocyclic group, C 2-20 alkyl group, or C 2-20 alkenyl group, the group having at least one carbon-carbon double bond in the position of conjugating to carboxylic acid radical or the group having an α,β-unsaturated ketone structure; Y is-OR or-NRR' wherein R and R' each independently is C 5-20 carbocyclic group, C 1-20 heterocyclic group, C 1-20 alkyl group or substituted group thereof having at least one substituent selected from the group consisting of -OW (wherein W is C 1-12 alkyl group), C 2 - 12 saturated acyl group, C 2-12 saturated acyloxy group, C 2 - 12 saturated acylamino group, C 2 - 12 dialkylamino group, -SW (wherein W is the same as defined above), C 2 - 12 saturated acylthio group and C 3-12 group having at least one silicon atom; m is 0, 1 or 2; and -COY can be attached to any of the positions ortho, peri, and y with respect to the -COOH group.
摘要:
A heat-resistant photoresist film comprising, as the essential components,
(a) a polymer consisting of recurring units represented by the formula wherein
X is a tetravalent C 6-30 carbocyclic group or heterocyclic group; Y is a divalent C 6-30 carbocyclic group or heterocyclic group;
A is -COOR or -COO⊖R'⊕ wherein each of R and R' is a compound having a reactive carbon-carbon double bond; and A is in the position ortho or peri with respect to the Z group, said polymer being capable of transforming into a polymer having a thermal decomposition temperature of at least 350 °C and a glass transition temperature of at most 350 °C in the heat treatment;
(b) a compound having a reactive carbon-carbon double bond; and (c) a photopolymerization initiator.