Reference

Elastic caulking compound, adhesive materials, and their use

Elastic caulking compound, adhesive materials, and their use. Psader, Josef (Polychemie G.m.b.H., Fed. Rep. Ger.). Ger. Offen. DE 3221655 A1 8 Dec 1983, 18 pp. (German). (Germany).Several substances with their cas registry numbers 5232-99-5 and 115-22-0 may be metioned in this study. CODEN: GWXXBX. CLASS: IC: C09K003-10; C09J003-16; C08L083-04; C08L081-04; C08L075-04; C08K005-00. APPLICATION: DE 82-3221655 8 Jun 1982. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Sealants having good adhesion contain curable siloxanes, polysulfides, and/or polyurethanes and UV absorbers, e.g. benzophenones or triazoles. Thus, a mixt. of OH-terminated di-Me siloxane (viscosity 50 Pa-s) 60, di-Me siloxane (viscosity 1 Pa-s) 30, MeSi(OAc)3 5, and SiO2 (sp. surface 150 m2/kg) 5% contg. 5% 2,4-dihydroxybenzophenone (I) [131-56-6] when exposed on glass to daylight for 2 wk had good adhesion, compared with very little without I. .

Protonation Thermochemistry of Selected Hydroxy- and Methoxycarbonyl Molecules

Protonation Thermochemistry of Selected Hydroxy- and Methoxycarbonyl Molecules. Bouchoux, Guy; Leblanc, Danielle; Bertrand, William; McMahon, Terance B.; Szulejko, Jan E.; Berruyer-Penaud, Florence; Mo, Otilia; Yanez, Manuel (Laboratoire des Mecanismes Reactionnels, Ecole Polytechnique, Palaiseau 91128, Fr.).Chemical with cas number 115-22-0 also plays role. Journal of Physical Chemistry A, 109(51), 11851-11859 (English) 2005 American Chemical Society. CODEN: JPCAFH. ISSN: 1089-5639. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The gas-phase basicities of a representative set of hydroxy- and methoxycarbonyl compds. (hydroxyacetone, 1, 3-hydroxybutanone, 2, 3-hydroxy-3-methylbutanone, 3, 1-hydroxy-2-butanone, 4, 4-hydroxy-2-butanone, 5, 5-hydroxy-2-pentanone, 6, methoxyacetone, 7, 3-methoxy-2-butanone, 8, 4-methoxy-2-butanone, 9, and 5-methoxy-2-pentanone, 10) were exptl. detd. by the equil. method using Fourier transform ion cyclotron resonance and high-pressure mass spectrometry techniques. The latter method allows the measurement of proton transfer equil. consts. at various temps. and thus the est. of both the proton affinities and the protonation entropies of the relevant species. Quantum chem. calcns. at the G3 and the B3LYP/6-311+G(3df,2p)//6-31G(d) levels of theory were undertaken in order to find the most stable structures of the neutrals 1-10 and their protonated forms. Conformational and vibrational analyses have been done with the aim of obtaining a theor. est. of the protonation entropies. .