摘要:
The present invention provides a method for producing curable resin which comprises reacting acrylic acid and/or methacrylic acid [which is hereinafter cited as (metha-) acrylic acid] with hydroxyl group-containing resin (I) obtained by reacting a five-member cyclic compound having an unsaturated conjugated double bond represented by the general formula (A) given below; ##STR1## (WHEREIN R is an organic residue having from 1 to 3 carbon atoms; m and n are integers and are in the relation of m+n=6) or the Diels-Alder addition product thereof (A) and a compound (B) having both reactive carbon-carbon double bond or bonds and towo or more hydroxyl groups within one and the same molecule thereof. In accordance with the present invention, curable coating composition comprising said curable resin can also be obtained. The resin of this invention can be very quickly cured by the exposure to heat or radiation.
摘要:
A process for preparing a curable coating resin comprising the steps of hydrogenating selectively the double bonds of a resin produced from a five-membered cyclic compound such as dicyclopentadiene and an unsaturated hydroxyl group-containing compound such as allyl alcohol and then esterifying the thus hydrogenated hydroxyl group-containing resin with acrylic and/or methacrylic acid thereby to obtain a curable coating resin; and a curable coating resin obtained by said process.
摘要:
A process for preparing a curable coating resin comprising the steps of hydrogenating selectively the double bonds of a resin produced from a five-membered cyclic compound such as dicyclopentadiene and an unsaturated hydroxyl group-containing compound such as allyl alcohol and then esterifying the thus hydrogenated hydroxyl group-containing resin with acrylic and/or methacrylic acid thereby to obtain a curable coating resin; and a curable coating resin obtained by said process.
摘要:
Curable coating compositions particularly suitable as a vehicle for printing inks, comprising a resin obtained by esterifying with acrylic or methacrylic acid a hydroxyl group-containing resin prepared either by reacting ingredients (A) and (B) to form a reaction mixture which is then reacted with ingredient (C) or by reacting the ingredients (A), (B) and (C). The ingredient (A) is a five-membered cyclic compound having conjugated double bonds or a Diels-Alder's reaction product thereof, the ingredient (B) a compound having both a polymerizable double bond and a hydroxyl group in the molecule and (C) a resol type phenolic resin.
摘要:
Ultraviolet light curable coating compositions comprising (1) a monomer and/or prepolymer containing at least one radically crosslinkable ethylenically unsaturated double bond and (2) a photopolymerization initiator containing (a) 4,4'-bis(diethylamino)benzophenone and (b) a lower alkyl ester of p- or o-benzoylbenzoic acid or a derivative thereof in a weight ratio of (a) to (b) of 1 : 1 to 1 : 10.
摘要:
A process for manufacturing a planographic printing plate using a photosensitive planographic printing plate comprising a conductive support and provided thereon, a photoconductive layer containing an alkali soluble resin, a photoconductor and a photosolubilizable photosensitive compound comprises the steps of forming an electrophotographic latent image on the photoconductive layer, developing the latent image with liquid developer to form a toner image layer, uniformly exposing overall to actinic light the entire photoconductive layer, and removing the photoconductive layer where no toner image layer has been formed, the transmission density of the toner image layer to the actinic light being not less than 0.6, and the transmission density per unit thickness of the toner image layer to the actinic light being not less than 0.03 dm.sup.2 /g.
摘要:
There are disclosed a photosensitive composition which comprises:(1) an o-naphtoquinonediazide compound;(2) an alkali soluble resin; and(3) any one selected from the groups consisting of:(a) an ester compound of a polyoxyalkylene sorbitol fatty acid and/or an ether compound of the fatty acid,(b) an alkylene oxide adduct of castor oil, hardened castor oil, lanolin alcohol, beeswax, phytosterol or phytostanol, and(c) at least one activator selected from the group consisting of polyoxypropylene alkyl ethers, polyoxypropylene alkylphenyl ethers and polyoxypropylene alkyl esters;.and a photosensitive lithographic printing plate which comprises a support; and a photosensitive layer formed by applying the above photosensitive composition.
摘要:
A positive photosensitive planographic printing plate is disclosed which has a photosensitive layer comprising in combination a specific o-naphthoquinonediazidosulfonic ester and a resin having a specific structural unit(s). Said photosensitive layer may also contain a novolak resin and/or an organic acid.
摘要:
Disclosed is a light-sensitive lithographic printing plate which comprises an aluminum or aluminum alloy support having been pretreated and a light-sensitive layer provided thereon, wherein the surface of the support adjacent to the light-sensitive layer is treated by use of an aqueous solution containing at least one selected from the group consisting of nitric acid, nitrate, nitrous acid and nitrite. According to this invention, lithographic printing plates which are free from stain due to residual light-sensitive layer, excellent in developability, good in water retention at image area and excellent in press life, can be obtained.
摘要:
A photosensitive composition principally comprised of a photosensitive diazo resin and a lipophilic high molecular compound, wherein said photosensitive composition further contains a metal complex dye soluble in an organic solvent. Also disclosed is a photosensitive lithographic printing plate employing such a photosensitive composition.