Reference

Copolymerization of styrene with zinc(II), cobalt(II), nickel(II), and copper(II) acrylates

Copolymerization of styrene with zinc(II), cobalt(II), nickel(II), and copper(II) acrylates. Wojtczak, Zbigniew; Gronowski, Adam (Inst. Chem., N. Copernicus Univ., Torun 87-100, Pol.). Makromol. Chem., 186(1), 139-44 (English) 1985. CODEN: MACEAK. ISSN: 0025-116X. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) The radical copolymn. of styrene [100-42-5] with Zn(II) [14643-87-9], Co(II) [58197-53-8], Ni(II) [60700-37-0], and Cu(II) acrylates (I) [20074-76-4] in MeOH at 60° was studied, as well as that of styrene with I in MeCN at 80°. In a given time period, an increase of conversion was obsd. with increasing concn. of the 1st three metal acrylates in mixts. with styrene; with I, however, a decrease in conversion was found. The monomer reactivity ratios were detd., and the products of the reactivity ratios, almost equal to 1, reflected an ideal copolymn. with little alternation. The Alfrey-Price Q-e parameters for the metal acrylates were calcd. and discussed.

Solid golf balls

Solid golf balls. (Sumitomo Rubber Industries, Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59228868 A2 22 Dec 1984 Showa, 3 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: A63B037-00. ICS: C08K005-40; C08L021-00. APPLICATION: JP 83-104669 10 Jun 1983. DOCUMENT TYPE: Patent CA Section: 39 (Synthetic Elastomers and Natural Rubber) Dipentamethylenethiuram tetrasulfide (I) [120-54-7] was used in the title ball manuf. Thus, a Surlyn 1601-covered solid golf ball prepd. from butadiene rubber 100, zinc acrylate [14643-87-9] 35, ZnO 53.1, antioxidant 0.5, dicumyl peroxide 1.5, and I 1.0 part was superior in rebounding, flight carry (by driver), and durability to a control prepd. without I.