Novel chemo-enzymatic process for the preparation of opticaly enriched beta-benzyl-gamma-butyrolactones
申请人:Council of Scientific and Industrial Research
公开号:US20040014993A1
公开(公告)日:2004-01-22
The present invention relates to a novel process for the preparation of optically enriched substituted R(+)&bgr;-benzyl-&ggr;-butyrolactones of the general formula 1,
1
wherein,
R
1
and R
2
independently represent the following groups,
R
1
═R
2
═H, OH, —OC
n
H
2n+1 (
n=1 to 8), NH
2
, and/or CF
3
,
R
1
and R
2
together represents —O(CH
2
)
m
O— where m=2 to 4.
Borated polyol ester of hindered phenol antioxidant/friction modifier with enhanced performance
申请人:Suen Yat Fan
公开号:US20160355746A1
公开(公告)日:2016-12-08
The present invention is directed to compounds comprising the reaction products of a phenolic ester polyol, a boron containing compound, and optionally, an alcohol. Also disclosed are compounds comprising the reaction products of a polyol, a boron containing compound, and a phenolic acid or ester.
Lubricating oil compositions and additive concentrates comprising above compounds, and methods for operating an internal combustion engine using said lubricating oil compositions are also disclosed.
The invention comprises lubricating compositions and hydraulic fluids containing N,N′-diaryl-o-phenylenediamine compounds that impart good levels of oxidation inhibition in the lubricants and hydraulic fluids. The invention further comprises a method of making N,N′-diaryl-o-phenylenediamine compounds.
Use of polymers based on n-vinyl caprolactam in hair cosmetics
申请人:Müller Gabi
公开号:US20070081964A1
公开(公告)日:2007-04-12
Use of polymers of 30-65% by weight of N-vinylcaprolactam, 35-65% by weight of a monomer mixture of N-vinylimidazole and vinylpyrrolidone, where the weight ratio of N-vinylimidazole to vinylpyrrolidone is between 0.085 and 0.30, 0-15% by weight of a nitrogen-containing quaternizable monomer (A), which is different from N-vinylimidazole, where the sum of monomer (A) and N-vinylimidazole is less than 18% by weight, in cosmetic preparations.
Process for preparing vinyl substituted beta-diketones
申请人:Southard E. Glen
公开号:US20060069288A1
公开(公告)日:2006-03-30
A process for preparing vinyl substituted beta-diketones includes reacting a halogen-containing beta-diketone with an olefin in a reaction zone under Heck coupling reaction conditions in the presence of a catalyst, a base, and an organic phosphine to provide a vinyl substituted beta-diketone product.