Reference

Adducts of aromatic dicarboxylic acids with alkylene oxides

Adducts of aromatic dicarboxylic acids with alkylene oxides. Komatsu, Makoto (Mitsubishi Gas Chemical Co., Inc., Japan). Japan. Kokai JP 52097928 17 Aug 1977 Showa, 9 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07C069-80. APPLICATION: JP 76-14329 12 Feb 1976. DOCUMENT TYPE: Patent CA Section: 35 (Synthetic High Polymers) Adducts with good shelf life for the manuf. of polyesters were prepd. by treating isophthalic acid (I), phthalic anhydride, or terephthalic acid with propylene oxide (II) in the presence of a catalyst, e.g., Et3N [121-44-8], pyridine [110-86-1], benzyltriethylammonium chloride [56-37-1], K dichromate, or chromic acetate, and removing the catalyst with a strong acid cation exchanger. Thus, a mixt. of I 332, II 244, and Et3N 1 part was purged with N, heated at 150° for 20 min at <12 kg/cm2 (gage), cooled, mixed (577 parts) with 577 parts water, stirred at 60°, sepd. to give 724 parts bottom layer contg. 574 parts I-II adduct, passed through a column of Amberlite IR 120B [39288-69-2] at 70°, dried, mixed (573 parts) with 235 parts fumaric acid and 31 parts propylene glycol, heated at <220° under N for 11.7 h to give a polymer [62948-15-6], mixed with 0.075 part hydroquinone, and dissolved in styrene to prep. a soln. having shelf life >20 days.

Reactive oligomers from glycidyl (meth)acrylate

Reactive oligomers from glycidyl (meth)acrylate. Takaoka, Tsunero; Nishikubo, Tadaomi (Nippon Oil Seal Industry Co., Ltd., Japan). Japan. Kokai JP 52116409 29 Sep 1977 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07C069-52. APPLICATION: JP 76-30900 23 Mar 1976. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Glycidyl acrylate (I) or methacrylate was polymd. or copolymd. with Et or Bu acrylate in AcOH or MeO2CCH2CH2CO2H in presence of azobisisobutyronitrile and the mixt. was heated with PhCH2NEt3Cl [56-37-1] or MeNEt3Cl [10052-47-8]. The epoxy group reacted with the CO2H group and the reaction gave reactive oligomers, which were modified with maleic or succinic anhydride. Thus, a mixt. of 0.31 mol I, 0.6 mol Et acrylate, 2 g azobisisobutyronitrile, and 3 g dodecanethiol was added to 0.31 mol AcOH at 80° over 3 h and the mixt. heated with 1 g PhCH2NEt3Cl at 90-120° for 2 h to give a reactive oligomer(II) of acid no. ￡2, viscosity 390 P (25°). II was compounded with 20% aminoplast, coated on a steel plate, and heated at 130° for 10 min to give a tough film. II was heated with maleic anhydride at 100-20° for 2 h, mixed with trimethylolpropane triacrylate and benzoin Et ether, and hardened by UV irradn.