Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
528274, 528280, 528281, 528283, 528285, 528302, 528308, 5283086, 525437, 525444, 524 81, 524432, 524435, C08G 6302
Macrocyclic poly(alkylene dicarboxylate) oligomers are prepared by the reaction of a dicarboxylic acid chloride such as terephthaloyl chloride with at least one bis(hydroxyalkyl) ester such as bis(4-hydroxybutyl) terephthalate, in the presence of a Lewis acid as catalyst. Illustrative Lewis acids are ferric chloride, zinc chloride, zinc bromide, stannous bromide and antimony pentachloride.
CA116(22):2154325; CA106(26):2144860; CA96(14):105110w CA89(14):110452u.
Droscher et al., "Poly(ethylene terephthalate): a solid Condensation Process", Polymer, vol. 19, 1978, pp. 43-47.
Goodman et al., "The Structures and Reversible Polymerization of Cyclic Oligomers from Poly(ethylene terephthalate)", Polymer 1, Sep. 1960, pp. 384-386.
Ross et al., "Isolation of a Cyclic Trimer from Polyethylene Terephthalate Film", J. Polymer Sci., 3, 406-407 (1954).
Org. Syn., Coll. vol. 3, 141-142 (1955).
Acquah Sam A.
General Electric Company
Kight III John
Pittman William H.
Squillante Edward A.
Macrocyclic polyester oligomer preparation with Lewis acid as ca does not yet have a rating. At this time, there are no reviews or comments for this patent.If you have personal experience with Macrocyclic polyester oligomer preparation with Lewis acid as ca, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Macrocyclic polyester oligomer preparation with Lewis acid as ca will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1250144