Reference

Evaluation of dielectric permittivity by d

Evaluation of dielectric permittivity by d.c. transient current method. Nozaki, Ryusuke; Yagihara, Shin; Takeishi, Shoji; Mashimo, Satoru (Fac. Sci., Tokai Univ., Tokyo, Japan). Proc. Fac. Sci. Tokai Univ., 18, 141-9 (English) 1983. CODEN: TUFPBE. DOCUMENT TYPE: Journal CA Section: 36 (Physical Properties of Synthetic High Polymers) Refinements in the d.c. transient current method using a fast transient recorder and numerical Fourier transformation of the obsd. 9003-20-7 which is the cas registry number of one of substances is just one of reagents here. transient current were described for precision measurement of dielec. permittivity of polymers over a wide frequency range from 1 mHz to 10 Hz. Measurements of poly(vinyl acetate) [9003-20-7] as an example were presented. .

Aqueous resin dispersions to form water-resistant products

Aqueous resin dispersions to form water-resistant products. (Kuraray Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58112036 A2 4 Jul 1983 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: B01F017-52; C08F002-30; C08F216-06; C08J003-02. ICA: C09J003-14; C09K003-18; D21H001-40. APPLICATION: JP 81-214702 25 Dec 1981. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 37 Vinyl acetate (I) optionally mixed with C2H4, an acrylic ester, a vinyl fatty acid ester, CH2:CHCl, or an unsatd. carboxylic acid is polymd. in the presence of an emulsifying agent copolymer of vinyl alc. and an N-(alkoxymethyl)(meth)acrylamide. Thus, 173 parts 5:95 N-(butoxymethyl)methacrylamide-vinyl alc. copolymer [88978-04-5] in 1970 parts water at pH 4 (AcOH) was heated 0.5 h at 60° with I 150, 10% H2O2 30, and 10% tartaric acid 45 parts and then with 1350 parts I added dropwise, giving a soln. (after 3 h at 107. 9003-20-7 and 88978-04-5 are cas registry numbers of chemicals which are used as reagents here.5°) with solids content 44.7% and viscosity 47,000 cP at 60 rpm/30° (little changed by storage under varying temps.), giving a product (baked 5 min at 130°) which lost 0.3% of its wt. after 24 h in water at 30°. Poly(vinyl acetate) [9003-20-7] prepd. in the presence of a poly(vinyl alc.) emulsifier had 45.1% solids content, 3600 cP viscosity (markedly affected by storage), and 4.1% wt. loss upon soaking in water. .