Detail of "13733-91-0"

Reference

Rubber with good adhesion to metals

Rubber with good adhesion to metals. (Yokohama Rubber Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59215340 A2 5 Dec 1984 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: C08L021-00. ICS: C08K005-37; C08K005-40. APPLICATION: JP 83-90091 24 May 1983. DOCUMENT TYPE: Patent CA Section: 39 (Synthetic Elastomers and Natural Rubber) Section cross-reference(s): 55, 56 The adhesion to metals, esp. brass, of S-vulcanized rubbers using thiuram accelerators is improved without impairing the scorch resistance of the rubber compd. or the thermal stability of the vulcanizate by adding 2.8-28 mmol 2,4,6-trimercapto-1,3,5-triazine (I) [638-16-4], 6-anilino-2,4-dimercapto-1,3,5-triazine [13733-91-0], or 6-dibutylamino-2,4-dimercapto-1,3,5-triazine [12597-71-6] to compds. contg. rubber 100, S 1-5, and thiuram derivs. 0.2-5 parts [sic]. Thus, Nipol DN 302 (nitrile rubber) 100, C black 90, ZnO 5, dioctyl adipate 5, S 2, and tetramethylthiuram monosulfide [97-74-5] 0.4 part and 11.3 mmol I were blended to give a rubber compn. having scorch time (at 125°) 12.3 min and adhesion to brass 16.0 kg/25 mm, vs. 12.9 min and 1.4 kg/25 mm without I.

Effect of active segments of polymer chains on the reaction of polymers

Effect of active segments of polymer chains on the reaction of polymers. 3. Accelerating effects of the ether group on the covulcanization of epichlorohydrin and its copolymer rubbers. Nakamura, Yoshiro; Mori, Kunio (Dep. Appl. Chem., Iwate Univ., Morioka, Japan). Kobunshi Ronbunshu, 35(7), 449-53 (Japanese) 1978. CODEN: KBRBA3. DOCUMENT TYPE: Journal CA Section: 38 (Elastomers, Including Natural Rubber) Covulcanization of epichlorohydrin rubber (CHR) and epichlorohydrin-ethylene oxide copolymer rubber (CHC) was investigated by using 2 vulcanizing systems, and the accelerating effect by the ether groups is discussed. Vulcanization by Diak 1 [143-06-6]-Pb3O4 gave a const. rate and a homogeneously vulcanized rubber regardless of the mixing ratios of CHR and CHC, whereas, vulcanization by 6-anilino-1,3,5-triazine-2,4-dithiol (AF) [13733-91-0]-metal oxide, had a rate which was dependent on the mixing ratio, although it also gave a homogeneously vulcanized rubber. The activation energy was the lowest, about 18.1 kcal/mol, for the reaction with the mixing ratio which gave the max. rate. Both the max. rate const. and the mixing ratio to give the max. rate were influenced by metal oxides used as activators. The results are explained by the activation of the AF×Mg formed in the reaction of AF with MgO: the aggregation of the ether groups in CHR and CHC segments forms a Lewis basic field, which acts just like a crown ether and activates the AF×Mg.