Reference

Vapor phase deposition of boric acid on cotton fibers via borate esters: 2

Vapor phase deposition of boric acid on cotton fibers via borate esters: 2. Dynamic atmosphere. Madacsi, John P.; Knoepfler, Nestor B.; Neumeyer, Julius P. (SRRC, ARS, New Orleans, La., USA). J. Fire Retard. Chem., 4(4), 242-58 (English) 1977. CODEN: JFRCDQ. ISSN: 0362-1693. DOCUMENT TYPE: Journal CA Section: 39 (Textiles) A continuous process developed to impregnate cotton fibers with boric acid involves exposing cotton batting to a dynamic atm. contg. Me borate [121-43-7] which hydrolyzes when it contacts the moisture in the fibers. After treatment, cotton fibers installed in mattresses resist ignition by cigarettes and comply with the requirements of the Mattress Flammability Std. FF 4-72.

Boron- and nitrogen-containing compositions for polycarbonate and polyester-polycarbonate synthesis

Boron- and nitrogen-containing compositions for polycarbonate and polyester-polycarbonate synthesis. Brunelle, Daniel Joseph (General Electric Co., USA). Eur. Pat. Appl. EP 130512 A2 9 Jan 1985, 14 pp. DESIGNATED STATES: R: DE, FR, GB, IT, NL. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: ICM: C08G063-32. APPLICATION: EP 84-107239 23 Jun 1984. PRIORITY: US 83-510500 5 Jul 1983. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Polycarbonates are prepd. by transesterification of diaryl carbonates with bisphenols in the presence of catalysts contg. quaternary ammonium hydroxides and borate esters. Thus, (PhO)2CO 1.066, bisphenol A 1, and (MeO)3B [121-43-7] 0.01 mol were heated 0.5 h at 180°, mixed with 0.01 mol Me4NOH [75-59-2], heated 0.5 h at 180° and 1.5 h at 240°/760-10 mm, pulverized, and heated 1 h at 275-285°/0.3 mm to give a polycarbonate [24936-68-3] with mol. wt. 70,650 and 43,900 after 0 and 16 h, resp., at 250°.