Detail of "2422-91-5"

Reference

Bearing linings

Bearing linings. Janczak, Teresa; Krupecki, Andrzej; Szkodzinski, Andrzej; Slusarski, Ludomir; Wagenknecht, Jerzy (Politechnika Lodzka; Kopalnia Wegla Brunatnego "Belchatow", Pol.). Pol. PL 127148 B2 15 Sep 1984, 3 pp. (Polish). (Poland). CODEN: POXXA7. CLASS: IC: C08J005-12; B32B015-06. APPLICATION: PL 81-232228 14 Jul 1981. DOCUMENT TYPE: Patent CA Section: 39 (Synthetic Elastomers and Natural Rubber) A bearing lining with resistance to heat, sand, oils, fats, and high mech. stresses in aq. or glycerol solns. is prepd. by coating the clean metal surface of the bearing with an adhesive contg. a 1:1 (vol.) mixt. of 20% PhMe soln. of chlorinated rubber and 20% MeCl soln. of an isocyanate, drying the coating at 330-340 K, placing the bearing in a vulcanization mold, applying a lining compn. contg. nitrile rubber 30-70, plasticizer 1-10, activated carbon black 10-60, antifriction agent 5-30, S 0.1-5, vulcanization accelerators 1.5-14, stearic acid 0.2-2, and antioxidant 0.2-2%, and pressing the lining at 400-450 K/1-30 MPa for 5-20 min. The lining can also be injection molded. Thus, the metal surface of a bearing was coated with a mixt. of chlorinated rubber soln. and triphenylmethane 4,4',4''-triisocyanate [2422-91-5] soln., dried at 330 K, placed in a vulcanization mold, and lined with a compn. contg. nitrile rubber 48.66, polyester plasticizer 2.43, carbon black 29.20, graphite 14.60, S 0.73, N-cyclohexylbenzothiazolylsulfenamide-dibenzothiazolyl disulfide mixt. 0.97, ZnO 2.43, stearic acid 0.49, and phenyl-b-naphthylamine 0.49%. The vulcanized lining (pressed at 423 K/15 MPa for 10 min) had tensile strength 19.5 MPa, elongation at break 220%, 100 and 200% modulus 9 and 17 MPa, resp., kinetic friction coeff. against glycerol-wetted steel 0.16, and swelling in hydrocarbon oil at 298-343 K 1.79-2.23%, resp.

Adhesion of fluoro rubber to other rubber

Adhesion of fluoro rubber to other rubber. Kageyama, Takashi (Kuraray Plastics Co., Ltd., Japan). Japan. Kokai JP 52117981 3 Oct 1977 Showa, 12 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: B32B007-10. APPLICATION: JP 76-36254 30 Mar 1976. DOCUMENT TYPE: Patent CA Section: 38 (Elastomers, Including Natural Rubber) An unvulcanized fluoro rubber sheet contg. peroxides and an unvulcanized rubber sheet contg. peroxides are coated with polyisocyanate and pressed together to vulcanize and bond the 2 sheets. Thus, Viton B (hexafluoropropene-tetrafluoroethylene-vinylidene fluoride rubber) 100, litharge 10, carbon black 30, triallyl isocyanurate 3, and 1,4-bis(1-tert-butyldioxy-1-methylethyl)benzene [2781-00-2] 2 parts were rolled to give a sheet which was coated with a 20% solids soln. of triphenylmethane 4,4',4''-triisocyanate (I) [2422-91-5] in CH2Cl2 and dried. A sheet of neoprene rubber 100, MgO 4, ZnO 5, carbon black 60, chlorinated paraffin 20, and dicumyl peroxide [80-43-3] 4 parts was pressed with the Viton B sheet on the isocyanate-coated side at 160° and 20 kg/cm2 for 30 min to form a bond having peel strength 18.3 kg/25 mm (failure in rubber), compared with 5.0 kg/25 mm for a similar combination without I.