Reference

Heat-resistant vinyl chloride resin compositions with low initial discoloration

Heat-resistant vinyl chloride resin compositions with low initial discoloration. Nakamura, Yoshiro; Yasuda, Mitsuo (Nippon Zeon Co., Ltd., Japan). Japan. Kokai JP 53000245 5 Jan 1978 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08L027-06. APPLICATION: JP 76-74659 24 Jun 1976. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Heat-resistant PVC [9002-86-2] compns. contained alk. earth metal carboxylate 0.1-10, Zn carboxylate 0.05-5, I (R = SH, Ph, C10H7, morpholino, OR1, SR1, NH2, NHR2, NR3R4, R1 = H, hydrocarbon residue, R2, R3, R4 = hydrocarbon residue) or its metal salt 0.01-0.5, and alk. earth metal oxide or carbonate 0.5-10 phr. For example, a colorless PVC sheet (hot pressing, 170°, 8 min) contg. calcium stearate [1592-23-0] 1.5, zinc stearate [557-05-1] 0.5, a polyol 0.2, 2-anilino-s-triazine-4,6-dithiol (II) [13733-91-0] 0.15, MgO 2.0, and stearic acid 0.3 phr had heat resistance (time to darkening in 190° air oven) 110 min, compared with 60 for a reddish brown sheet not contg. II and MgO.

Pelletization of plastic molding additives

Pelletization of plastic molding additives. Hishida, Iwao (Japan ). Japan. Kokai JP 52098042 17 Aug 1977 Showa,4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08K009-04. APPLICATION: JP 76-14132 12 Feb 1976. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Fabrication and Uses) Additives for molding of plastics are pelletized by using atactic polypropylene (I) [9003-07-0] and Zn and(or) Mg salts of stearic acid as binders. Thus, a compn. of rutile TiO2 100, atactic I 15, zinc stearate [557-05-1] 10, and magnesium stearate [557-04-0] 10 parts was pelletized, and 1 part of the pellets was mixed with 100 parts polyethylene [9002-88-4], polystyrene [9003-53-6], I, or ABS resin [9003-56-9] and injection molded to give test pieces contg. uniformly dispersed pigment.