Detail of "111-19-3"

Reference

Polybutene composition containing halogen-containing additives and use thereof

Polybutene composition containing halogen-containing additives and use thereof. Puskas, Imre; Cengel, John A. (Standard Oil Co. (Indiana), USA). U.S. US 4008168 15 Feb 1977, 5 pp. Division of U.S. 3,954,812. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C07C007-18. NCL: 252182000. APPLICATION: US 73-358911 10 May 1973. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) The formation of undesired tars in the addn. reaction of maleic anhydride [108-31-6] with polybutene (I) [9003-29-6] (mol. wt. 914-57) to give viscosity index improvers was reduced by the addn. of 5-200 ppm Cl- or Br-contg. carboxylic or sulfonic acid, N-haloamide, or N-haloimide having a vapor pressure at 150-225.degree. sufficient for the evapn. of the additive at 5-760 mm Hg. For example, I (Mn 914) contg. 150 ppm sebacoyl chloride [111-19-3] was mixed with maleic anhydride in a Par bomb and heated 6 h at 249.degree. to give 72.8% ext. contg. 506-96-7 and 142-94-9 are just another two chemicals used in this study. 0.6% tar. .

Bifunctional organolithium polymerization initiators and their use especially in manufacturing thermoplastic elastomers

Bifunctional organolithium polymerization initiators and their use especially in manufacturing thermoplastic elastomers. Sigwalt, Pierre; Guyot, Patrick; Fontanille, Michel; Vairon, Jean P. (Agence Nationale de Valorisation de la Recherche; Societe Chimique des Charbonnages, Fr.). Ger. Offen. DE 2623344 16 Dec 1976, 16 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C07F001-02. PRIORITY: FR 75-17716 6 Jun 1975. DOCUMENT TYPE: Patent CA Section: 38 (Elastomers, Including Natural Rubber) Section cross-reference(s): 25 The compds. H2C:C(C6H4R)(CH2)nC(C6H4R):CH2(R = H, C.ltoreq.6 alkyl; n .gtoreq.2), having UV absorption max. at 237 nm with extinction coeff. 21,500 L/mol-cm are useful in prepn. of strictly bifunctional org. Li compds. for polymn. of dienes to polymers with 2 reactive end groups. Thus, stirring 0.2 mol BuLi and 72 g Ph3PMe+Br- [1779-49-3] in Et2O 4 h at room temp., adding 32.2 g PhCO(CH2)8COPh [6268-61-7] (prepd. from C6H6 [71-43-2] and ClCO(CH2)8COCl [111-19-3] in 80% yield), and refluxing 24 h gives 2,11-diphenyl-1,11-dodecadiene (I) [61746-05-2], UV max. 237 nm, extinction coeff. 21,500. Stirring I and excess Me3CLi [594-19-4] in C6H14 3 days at room temp. gives insol. 3,14-dilithio-2,2,15,15-tetramethyl-3,14-diphenylhexadecane (II) [61746-06-3]. Polymg. isoprene with II in C6H14 gives polyisoprene [9003-31-0], mol. wt. 132,000, in good agreement with calcd. values, and microstructure cis-1,4 73, trans-1,4 21.3, and 3,4 5.7%.