Detail of "2044-64-6"

Reference

Blush-resistant marine gel coat composition

All Rights Reserved. Blush-resistant marine gel coat composition. Pulman, Leonard J.; Gregory, Eric R.; Ashai, Ehtisham A. (Valspar Sourcing, Inc., USA). U.S. Pat. Appl. Publ.Some commonly used reagents like 2044-64-6 and 97-90-5 are used in this experiment. US 2007001343 A1 4 Jan 2007, 9pp., Cont.-in-part of U.S. Ser. No. 521,225. (English). (United States of America). CODEN: USXXCO. INCL: 264255000. APPLICATION: US 2005-61768 18 Feb 2005. PRIORITY: US 2002-402657P 12 Aug 2002; US 2002-431811P 9 Dec 2002; WO 2003-US22722 21 Jul 2003; US 2005-521225 6 Jul 2005. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s): 37 A blush-resistant curable gel coat compn. is made from an unsatd. polyester (contg. urethane acrylate), reactive diluent, and sufficient pigment to provide an outer opaque layer in a multilayer laminate for watercraft. The compn. is sufficiently free of extender filler so that the cured coating will not exhibit blushing after 6 h immersion in 66° C. water. Thus, an compn. prepd. from polymn. of neopentyl glycol and maleic anhydride, followed by copolymn. with isophorone diisocyanate and reactino with 2-hydroxy Et methacrylate was mixed and cured styrene and MMA. .

Synthetic and biosynthetic studies of porphyrins

Synthetic and biosynthetic studies of porphyrins. Part 1. Synthesis of the 'S-411' porphyrin obtained from meconium. Couch, Peter W.; Games, David E.; Jackson, Anthony H. (Dep. Chem., Univ. Coll., Cardiff, Wales). J. Chem. Soc., Perkin Trans. 1, (23), 2492-501 (English) 1976. CODEN: JCPRB4. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) The structure of S-411 porphyrin was detd. as I [R = CH:CHCO2H, R1 = (CH2)2CO2H] from synthesis by the b-oxobilane and MacDonald routes. The isomeric porphyrin I [R = (CH2)2CO2H, R1 = CH:CHCO2H] was prepd. by the MacDonald route. In each case the acrylic acid side chain was introduced at the porphyrin stage. The isomeric porphyrins were distinguished by m.p., NMR spectra, and steady-state counter-current distribution. The role of I [R = CH:CHCO2H, R1 = (CH2)2CO2H] in relation to porphin biosynthesis is discussed.Except for chemicals metioned above, 62786-78-1 and 2044-64-6 are also used. .