Reference

Synthesis and application of polymers to wool

Synthesis and application of polymers to wool. Kilpatrick, D. J.; Shaw, T. (Tech. Cent., Int. Wool Secr., Ilkley, Engl.). Proc. - Int. Wolltextil-Forschungskonf., 5th, Meeting Date 1975, Volume 5, 19-30. Edited by: Ziegler, Klaus. Dtsch. Wollforschungsinstitut Tech. Hochsch.: Aachen, Ger. (English) 1976. CODEN: 35LRAE. DOCUMENT TYPE: Conference CA Section: 39 (Textiles) Polythiols are prepd. by esterification of polyalkylene glycols with mercaptocarboxylic acids for shrinkproofing of wool by the pad-dry process. Polytetramethylene glycol esterified with thiomalic acid (I) [70-49-5] was more effective as a shrinkproofing agent and had a higher photostability than polypropylene glycol esterified with I. The I-esterified polymers were more readily cured than mercaptoacetates.

Polymeric materials with acid end groups

Polymeric materials with acid end groups. Jones, Frank N. (du Pont de Nemours, E. I., and Co., USA). U.S. US 4029861 14 Jun 1977, 6 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08F020-18. NCL: 526014000. APPLICATION: US 70-39523 21 May 1970. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Acid group-terminated polymers useful as pigment dispersing aids are prepd. by treating a methacrylate polymer or copolymer with 2-mercaptoethanol (I) [60-24-2], Desmodur N (II) [11142-52-2], and mercaptosuccinic acid (III) [70-49-5]. Thus, a mixt. of PhMe 90.7, Me methacrylate 226.7, 2-ethylhexyl acrylate 126, I 4.44, and AIBN 0.903 part was added to 226.7 parts PhMe during 4 h, and the soln. was refluxed as a soln. of 0.25 part AIBN and 2.5 parts Me iso-Bu ketone was added in 3 equal portions at 15-min intervals. After refluxing 45 min, the soln. was treated with 43.21 parts II and 3.78 PhMe, stirred 5 min, mixed with 0.51 part dibutyltin dilaurate and 1.89 parts PhMe, and refluxed 1 h. The mixt. was cooled to 65.degree., treated with 17.09 parts III and 124.68 parts MeCOEt, stirred 30 min at 60-75.degree., and mixed with 0.85 part acetic anhydride to yield a 48% solids soln. of the polymer [25265-15-0] having the structure RS(CH2)2O2CNH(CH2)6N[C(:O)NH(CH2)6NHC(:O)SC(CH2CO2H)H CO2H]2, where R = 2-ethylhexyl acrylate-Me methacrylate polymer. A mixt. of the polymer soln. 62.5, phthalocyanine blue [147-14-8] pigment 65, xylene 168, and 2-butoxyethyl acetate 66 parts was sandmilled to form a fluid dispersion, which was mixed with a clear thermosetting acrylic enamel vehicle (2 parts pigment/100 parts binder), spread onto a glass panel, and baked at 160.degree. to form a transparent glossy blue film.