Reference

Surface modifiers for powdered or granular inorganic substances

Surface modifiers for powdered or granular inorganic substances. (Ajinomoto Co., Inc., Japan). Jpn. Kokai Tokkyo Koho JP 59176377 A2 5 Oct 1984 Showa, 7 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09K003-00. APPLICATION: JP 83-50978 26 Mar 1983. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Section cross-reference(s): 34 The modifiers, which improve wettability by and dispersibility in org. solvents, contain HO2CCH(NHR)CH2CO2R1 and(or) HO2CCH(NHR)CH2CONHR1 (R, R1 = C6-18 alkyl, alkenyl). Hydrophilic surfaces of inorg. materials such as powd. or granular fillers and pigments used for org. polymers are made lipophilic by the modifiers. Thus, 50 g maleic anhydride [108-31-6] was esterified with 94 g lauryl alc. [112-53-8] in PhMe and the product treated with 65 g 2-ethylhexylamine [104-75-6] to obtain 106.5 g b-lauryl N-(2-ethylhexyl)aspartate (I) [94788-88-2].In this experiment, several chemicals are used like 108-31-6 Then, to 0.25 g I in 25 mL 1:7 DMF-PhMe in a tube was added 0.5 g talc (SW) and the mixt. agitated 10 min in an ultrasonic shaker and stood vertically for 20 min. A sedimentation vol. of 19 mL was obtained, vs. 9 mL for talc without I treatment. .

Antifoaming powder coating compositions

Antifoaming powder coating compositions. Homma, Minoru; Shoji, Akio (Dainippon Ink and Chemicals, Inc., Japan). Japan. Kokai JP 53022534 2 Mar 1978 Showa, 3 pp. Division of Japan. Kokai 74 92,123. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09D005-00. APPLICATION: JP 72-103614 18 Oct 1972. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Blends of base polymers having OH and (or) CO2H groups and aminoplasts contg. 0.01-5 wt.% (based on blends) N-contg. basic compds. (antifoaming agents) are useful as powder coating materials. Thus, a mixt. of styrene 40, 2-hydroxyethyl methacrylate 15, acrylic acid 1, Bu methacrylate 30, hexadecyl acrylate 14, azabisisobutyronitrile 4, cumene hydroperoxide 1, and lauryl mercaptan 1 part was added to a mixt. of 70 parts xylene and 30 parts BuOH at 100° for 4 h and stirred 10 h addn. at 100° to give a copolymer (I) [66992-22-1] having softening temp. 121°. A compn. of I 90, hexakis(methoxymethyl)melamine [3089-11-0] 6, tetrakis(butoxymethyl)benzoguanamine [22411-29-6] 4, 2-ethylhexylamine (II) [104-75-6] 0.4, Modaflow 0.5, and TiO2 50 parts was rolled, cooled, and ground to give a powder coating material. The powder was electrostatically applied to a steel substrate and baked 30 min at 190° to give a 130-m coating having gloss 97% and Erichsen test penetration >7 mm, compared with 14 and >7, resp., for a similar coating without II.