Synthesis and catalytic properties of hydrophobically modified poly(alkylmethyldiallylammonium bromides)
摘要:
A series of hydrophobically modified homo- and copolymers of the poly(alkylmethyldiallylammonium bromide) type has been prepared by free-radical cyclo(co)polymerization of alkylmethyldiallylammonium bromide monomers in aqueous solution. Depending on the length of the alkyl side chain (varied between C1 and C-12) and the conformational freedom of the polymeric main chain, polysoap behavior was found as indicated by the hypsochromic shift of the long-wavelength absorption band of Methyl Orange, noncovalently bound to the macromolecule. The formation of a compact coil results in the presence of hydrophobic microdomains. Polysoap formation, akin to intramolecular micellization, is also revealed by appreciable catalytic effects on the unimolecular decarboxylation of 6-nitrobenzisoxazole-3-carboxylate at pH 11.3 and 30-degrees-C.
POLYSACCHARIDE-BASED GRAFT COPOLYMER AND COMPOSITION COMPRISING SAME FOR PERSONAL CARE
申请人:Kci Limited
公开号:EP2660252A2
公开(公告)日:2013-11-06
The present invention relates to a graft copolymer including a polysaccharide as a main chain and a phosphorylcholine analogous group-containing monomer as a side chain, and a composition for skin and hair care including the copolymer as an active ingredient. The graft copolymer according to the present invention exhibits more improved moisturizing capacity and better biocompatibility than the existing polysaccharide-based graft copolymer by introducing a phosphorylcholine analogous group-containing compound, and accordingly, the composition for hair and skin care including the same also has improved moisturizing capacity, protection capacity of damaged hair, skin affinity, a skin barrier function, and the like.
Synthesis and catalytic properties of hydrophobically modified poly(alkylmethyldiallylammonium bromides)
作者:Ya Jiang Yang、Jan B. F. N. Engberts
DOI:10.1021/jo00013a043
日期:1991.6
A series of hydrophobically modified homo- and copolymers of the poly(alkylmethyldiallylammonium bromide) type has been prepared by free-radical cyclo(co)polymerization of alkylmethyldiallylammonium bromide monomers in aqueous solution. Depending on the length of the alkyl side chain (varied between C1 and C-12) and the conformational freedom of the polymeric main chain, polysoap behavior was found as indicated by the hypsochromic shift of the long-wavelength absorption band of Methyl Orange, noncovalently bound to the macromolecule. The formation of a compact coil results in the presence of hydrophobic microdomains. Polysoap formation, akin to intramolecular micellization, is also revealed by appreciable catalytic effects on the unimolecular decarboxylation of 6-nitrobenzisoxazole-3-carboxylate at pH 11.3 and 30-degrees-C.
YANG, YA JIANG;ENGBERTS, JAN B. F. N., J. ORG. CHEM., 56,(1991) N3, C. 4300-4304