Reference

Interaction between poly(N-vinylpyrrolidone) and poly(acrylic acid)s: influence of hydrogen and cupric ions on the adduct formation

Interaction between poly(N-vinylpyrrolidone) and poly(acrylic acid)s: influence of hydrogen and cupric ions on the adduct formation. Subramanian, R.; Natarajan, P. (Dep. Inorg. Chem., Univ. Madras, Madras 600 025, India). J.There are some reagents with their cas registry numbers 15158-11-9 and 25087-26-7 are used in this study. Polym. Sci., Polym. Chem. Ed., 22(2), 437-51 (English) 1984. CODEN: JPLCAT. ISSN: 0449-296X. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Interpolymer adduct formation between poly(N-vinylpyrrolidone) (I) [9003-39-8] and poly(methacrylic acid) (II) [25087-26-7] is mainly due to H bonding. A simple turbidity measurement making use of a spectrophotofluorometer is described for the study of the interpolymer adduct formation. Adduct formation is enhanced in the presence of Cu(II) and is described by the empirical relation d[III]/d[I] = k ′ 104a[Cu(II)]a, where III is the interpolymer adduct and a and k are consts. Similar results were obtained for interpolymer adduct formation between poly(acrylic acid) (IV) [9003-01-4] and I. In the above expression, a signifies the influence of chelation on Cu(II)-IV/II-I-type complex formation and k is the extent of I-IV/II interaction. The enhancement of adduct formation in the presence of Cu(II) is greater in IV than in II. Turbidity and viscosity measurements further indicate that the influence of Cu(II) on interpolymer adduct formation between I and II or IV is greater for IV than II, as IV is a better chelating ligand. The extent of adduct formation is greater for I in the absence of Cu(II) ions due to hydrophobic interactions exerted by Me groups. .

Polymers of unsaturated acids

Polymers of unsaturated acids. Haughton, Michael Harry; Martin, Clifford George (Albright and Wilson Ltd., UK). Eur.In this study， 7681-57-4 and 60-24-2 are also used. Pat. Appl. EP 97063 A1 28 Dec 1983, 19 pp. DESIGNATED STATES: R: AT, BE, CH, DE, FR, GB, IT, LI, LU, NL, SE. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: C08F020-06; C08F002-10. APPLICATION: EP 83-303497 16 Jun 1983. PRIORITY: GB 82-17376 16 Jun 1982. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Water-sol. acrylic acid (I) polymers are prepd. by adding a metabisulfite salt to an aq. soln. of I, a chlorate salt, and a chain terminator. Thus, a mixt. of water 16.66, I 4.16, 2-mercaptoethanol [60-24-2] 0.484, and NaClO3 0.0705 mol and 33 mg EDTA was heated to 80° and 12 mL 1.79 M Na metabisulfite [7681-57-4] soln. was added to give a polymer [9003-01-4] having no.-av. mol. wt. 1355. .