Reference

Treatment of polyester fibers

Treatment of polyester fibers. (Toray Industries, Inc., Japan). Jpn. Kokai Tokkyo Koho JP 59100760 A2 11 Jun 1984 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: D06M005-02. APPLICATION: JP 82-206406 25 Nov 1982. DOCUMENT TYPE: Patent CA Section: 40 (Textiles) In sapon. of polyester fibers, alk. mixts. contg. 0.05-0.8% (on fiber wt.) quaternary ammonium compd. are used. These quaternary ammonium salts RN+R1R2R3 X- (R = C38 alkyl, alkenyl; R1 = alkyl, cycloalkyl, aryl, aralkyl or their derivs.; R2, R3 = C1-4 alkyl or its deriv.; R2 and R3 may form a ring; X = a halogen, OH, R4OSO3; R4 = alkyl) or PhCH2N+R5[(C2H4O)mH](C2H4O)nH Cl- (R5 = C12-18 alkyl; m + n = 2-30; m or n may be 0). These fibers exhibit improved color-forming ability. Thus, a georgette fabric woven from polyester twisted yarns was crimped, heat-set, and soaked with an aq. mixt. contg. NaOH and 0.8 wt. % Me3N+CH2Ph Cl- [56-93-9] and sapond.; the fabric showed improved dyeability.

Extraction of pectin from plant materials

Extraction of pectin from plant materials. (Konishi, Ko, Japan). Jpn. Kokai Tokkyo Koho JP 59124902 A2 19 Jul 1984 Showa, 8 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08B037-06. APPLICATION: JP 83-142 2 Jan 1983. DOCUMENT TYPE: Patent CA Section: 44 (Industrial Carbohydrates) Plant materials contg. pectin (I) [9000-69-5] were extd. with aq. acid and/or inorg. salt to which a quaternary ammonium salt (and/or base) as cationic surfactants was added. The amt. of quaternary ammonium salt or base is preferably 0.001-10% of the amt. of I. The pH of the aq. soln. is preferably 1-6. Thus, strained lees of apples were washed with water, aq. benzyltrimethylammonium chloride [56-93-9] was added, the pH adjusted to pH 3 at 80°, and the mixt. was stirred for 1 h to give 1400 g filtrate contg. 4850 g/mL. (g = 10-6 g) I calcd. as galacturonic acid.