Reference

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.

Fire-resistant copolycarbonates

Fire-resistant copolycarbonates. Narita, Yoshihiro; Konuma, Hideo; Tagami, Sanae; Harada, Nobuchika; Yamada, Hiroshi (Idemitsu Kosan Co., Ltd., Japan). Japan. Kokai JP 51052492 10 May 1976 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08G063-62. APPLICATION: JP 74-126436 31 Oct 1974. DOCUMENT TYPE: Patent CA Section: 35 (Synthetic High Polymers) Bisphenols and halogenated bisphenols were condensed with COCl2 in the presence of tetrakis(lower alkyl) quaternary ammonium salts as catalyst to give the title polymers.There are some reagents with their cas registry numbers 32844-27-2 and 10052-47-8 are used in this study. Thus, 91 g bisphenol A dissolved in 500 ml of 1.7N aq. NaOH was mixed with 200 ml CH2Cl2, and COCl2 was passed in at 20.degree. during 95 min at 40 g/hr with stirring. The obtained oligomer soln. dild. with 440 ml CH2Cl2 was mixed with a soln. contg. 87 g tetrabromobisphenol A in 160 ml of 2N aq. NaOH, 18 ml of 48% aq. NaOH, 1.5 g p-tert-butylphenol, and 0.33 g Et3MeNCl [10052-47-8], and stirred 30 min at 30.degree. to give transparent copolycarbonate [32844-27-2] powder (26.5 wt % Br). .