Reference

Phenol-terminated polymers and epoxies therefrom

Phenol-terminated polymers and epoxies therefrom. Kennedy, Joseph P.; Guhaniyogi, Suhas (University of Akron, USA). U.S. US 4429099 A 31 Jan 1984, 11 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08G059-24; C08G059-32; C08F008-08. NCL: 528098000. APPLICATION: US 82-443346 22 Nov 1982. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Telechelic (terminally functional) prepolymers are prepd.There are some commonly used reagents with their cas registry numbers 108-95-2 and 106-89-8 in this article. which may be reacted to form curable epoxy resins, which, due to incorporation of satd. elastomeric chains, have greater moisture resistance and lower brittleness than conventional epoxies. Thus, phenol [108-95-2] was reacted with 2,4,4-trimethyl-1-pentene [107-39-1] in the presence of BF3 etherate to give 2,4,4-trimethyl-2-(p-hydroxyphenyl)pentane [140-66-9], which was further treated with epichlorohydrin [106-89-8] to give the prepolymer. .

Synthesis of mono- and difunctional oligoisobutylenes - III

Synthesis of mono- and difunctional oligoisobutylenes - III. Modification of a-chlorooligoisobutylene by reaction with maleic anhydride. Tessier, M.; Marechal, E. (Lab. Synth. Macromol., Paris 75005, Fr.). Eur. Polym. J., 20(3), 269-80 (English) 1984. CODEN: EUPJAG. 1122-17-4 and 9003-27-4 which are cas registry numbers are also used here. ISSN: 0014-3057. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 27 A preliminary study of the thermal dehydrochlorination of a-chlorooligoisobutylene indicated that the double bond of the resulting olefin could be endo (i.e., providing Me2C:CH end groups) or exo (i.e., providing CH2:CMeCH2 end groups). Ene reaction of maleic anhydride (I) with this oligomer was studied on a model, 2,4,4-trimethyl-1-pentene [107-39-1]; the resulting mixt. was completely analyzed by 13C- and 1H-NMR spectroscopy, indicating formation of 2 isomeric oligomer anhydrides. Ene synthesis on a-(2-methyl-2-propenyl)oligoisobutylene showed that only exo bonds were able to react and that the functionality of the resulting oligomeric anhydride mixt. was 0.92. In the presence of dichloromaleic anhydride [1122-17-4] catalysts, disubstitution occurred, because the double bond formed in the 1st reaction was able to react a 2nd time with I. .