Detail of "28469-73-0"

Reference

Isolation of acetals containing sulfonic acid groups

Isolation of acetals containing sulfonic acid groups. Ono, Yasuji; Hirai, Koji (Kuraray Co., Ltd., Japan). Japan. JP 51033102 B4 17 Sep 1976 Showa, 4 pp. (Japanese). (Japan). CODEN: JAXXAD. CLASS: IC: C07C143-38. APPLICATION: JP 71-53476 17 Jul 1971. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Compd. MeCH(OCH2CH2OCH2CH2OC6H4SO3Na-p)2 (I) [41694-56-8] which had good purity and did not discolor poly(ethylene terephthalate) [25038-59-9] was prepd. by dissolving 98 g p-OHC6H4SO3Na [28469-73-0] and 20 g NaOH in 300 ml hot water, mixing with 4.5 g Na2CO3, 68.7 g MeCH(OCH2CH2OCH2CH2Cl)2 [41489-83-2], and 200 ml diethylene glycol, stirring at 110.degree. for 30 hr, pouring into 500 ml hot 34.8% aq. NaCl, cooling to 15.degree., filtering, washing with acetone, heating in 250 ml 15% aq. NaCl contg. 0.5 g Na2CO3, mixing with active carbon, filtering, cooling the filtrate to give 105 g crude I, dissolving in 100 ml hot aq. soln. contg. 4 g NaCl and 0.In this experiment, several chemicals are used like 41694-56-8 and 41489-83-2 2 g Na2CO3, cooling to 5.degree., and filtering to give 88 g I having good purity. .

Alkali metal hydroxide and phenol sulfonate dyeability additive in polyesterification process

Alkali metal hydroxide and phenol sulfonate dyeability additive in polyesterification process. Cleary, James W. (Phillips Petroleum Co., USA). U.S. US 3992359 16 Nov 1976, 5 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08G063-68. NCL: 260075000S. APPLICATION: US 74-502856 3 Sep 1974. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Sodium p-phenolsulfonate (I) [28469-73-0]-modified poly(ethylene terephthalate) (II) [25038-59-9] with improved dyeability was prepd. in the presence of NaOH which reduced the glycol content of the polymer. Thus, a mixt. of di-Me terephthalate 384.1, ethylene glycol 310, Zn(OAc)2.2H2O 0.117, Sb2O3 0.118, and NaOH (in 2 ml MeOH) 0. 28469-73-0 and 1310-73-2 which are cas registry numbers of chemicals are mentioned.075 g was heated to 204.degree. in 21 h with removal of MeOH, mixed with 1 ml tris(nonylphenyl) phosphite and 4.64 g I, and heated at 260.degree. for 5.5 h in vacuo to prep. II. .