Reference

Printing inks

Printing inks. Tsuchiya, Shozo (Nippon Oil Co., Ltd., Japan). Ger. Offen. DE 2635123 17 Feb 1977, 18 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09D003-74. PRIORITY: JP 75-94691 5 Aug 1975. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Water-resistant, heat- or irradn.-crosslinkable printing inks, which did not pollute the atm. 62340-68-5 and 4074-88-8 which are cas registry numbers are also used here. with solvent vapors during crosslinking, are manufd. from dicyclopentadiene-maleic anhydride copolymer (I) esters with 2-hydroxyethyl acrylate (II), N-methylolacrylamide or glycidyl methacrylate and a reactive solvent, e.g. trimethylolpropane triacrylate (III) [15625-89-5]. Thus, I (softening point 92.5.degree., acid no. 226) reacted with II in the presence of phenothiazine to give copolymer ester (IV) [62340-70-9] which was dissolved in III. Synthetic paper was printed with an ink contg. Lionol Blue SM, IV-III soln., vaseline, III, and benzophenone at 25 mg/100 cm2 and treated with a high-pressure UV lamp to give an excellent printed surface. .

Adhesion promoters for polymerizable films

Adhesion promoters for polymerizable films. (Dynachem Corp., USA). Belg. BE 837489 3 May 1976, 20 pp. (Unavailable). (Belgium). CODEN: BEXXAL. CLASS: IC: C08K. APPLICATION: BE 76-837489 12 Jan 1976. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Section cross-reference(s): 74 The adhesion of photopolymerizable photog. mask formulations to metal surfaces, in the presence and absence of water, and the photochem. crosslinking of these masks, were increased by addn. of heterocyclic mercaptans which acted as adhesion promoters and synergistic accelerators with the photoinitiator. Thus, 0.36 part of I (X = NH, O, S), adhesion promoters and accelerators were added to photochem. crosslinkable compns. contg. poly(methyl methacrylate) [9011-14-7] 59.7, trimethylolpropane triacrylate [15625-89-5] 19.6, tetraethylene glycol diacrylate [17831-71-9] 9.8, benzophenone 3.4, Michler's ketone 0.45, 2,2'-methylene bis(4-ethyl-6-tert-butylphenol) 0.18, tetraethylene glycol diacetate 2.25, tricresyl phosphate 4.50, dye 0.14, and MeCOEt 100.0 parts. The compn. was coated onto a polyester film support as a 2.54 .mu. thick layer, allowed to dry, and bonded, by heating at 121.degree.There are some commonly used reagents with their cas registry numbers 96-45-7 and 583-39-1 in this article. and pressure rolling, to a Cu-coated surface of a glass fiber-reinforced epoxy laminate. The polyester support was removed and the film was exposed to a 400 W Hg vapor lamp at 50 A and 30.5 cm distance through a photog. mask for manuf. of a printed circuit base. The film was crosslinked in 20-30 s in the presence of all 3 accelerators used, compared with 60 s with no additives or with addn. of benzotriazoles. The mask had good adhesion to the Cu circuit on immersion 45 min in a Cu plating bath at 55.degree.. .