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7098197 |
Phosphonate compounds
The present invention relates to phosphonate compounds, compositions containing them, processes for obtaining them, and their use for treating a variety of medical disorders, e.g., osteoporosis and...
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7094772 |
Phosphonate compounds
The present invention relates to phosphonate compounds, compositions containing them, processes for obtaining them, and their use for treating a variety of medical disorders, e.g., osteoporosis and...
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7081533 |
Cycloaliphatic/aromatic diphosphines and use thereof in catalysis
The present invention concerns novel unsymmetrical chiral diphosphines of a mixed aliphatic-aromatic type and processes for synthesizing them, complexes of these compounds and their use as catalysts.
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7057061 |
Chiral monophosphorus compounds
The present invention relates to catalysts comprising chiral monophosphorus compounds and their use, the chiral monophosphorus compounds themselves and also their precursors.
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6800778 |
Process for producing optically active naphthalene derivative and optical resolver therefor
The present invention provides a method of producing an optically active form of a compound represented by the formula (I) having a steroid C 17,20 -lyase inhibitory activity and is useful as an...
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6790928 |
Process for producing polycarbonates
100 parts by weight of the polycarbonate produce by melt polycondensation of a carbonic acid diester and a dihydroxy compound and 0.0001 to 0.1 part by weight of a phosphite compound represented by...
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6756402 |
Cyclipostins, process for their preparation and use thereof
The invention relates to compounds of formula I in which R 1 , R 2 , E, X 1 , X 2 , and X 3 have the meaning as described in the specification and claims, obtained by culturing Streptomyces...
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6310260 |
Separation processes
This invention relates to a process for separating one or more organophosphorus ligand degradation products, one or more reaction byproducts and one or more products from a continuously generated...
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6307109 |
Separation processes
This invention relates to a process for separating one or more products from a reaction product fluid comprising a metal-organophosphorus ligand complex catalyst, optionally free organophosphorus...
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6307108 |
Metal-ligand complex catalyzed processes
This invention relates to a process for separating one or more organophosphorus ligand degradation products, one or more reaction byproducts and one or more formylester products from a reaction...
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6294680 |
Process for the production of semi synthetic statins via novel intermediates
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5962744 |
Process for hydrocarbonylations in supercritical carbon dioxide
A process comprising subjecting at least one compound containing at least one carbon--carbon double bond or at least one carbon--carbon triple bond, hydrogen and carbon monoxide, to a...
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5891939 |
Phosphites, process for producing them and their use
Phosphites inhibitors for organic material represented by the formula: ##STR1## wherein R 1 , R 2 , R 4 and R 5 independently represent hydrogen atom, an alkyl group, a cycloalkyl group, an...
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5889095 |
Phosphites, process for producing the same and their use
A phosphite stabilizer for organic material is represented by the formula (1): ##STR1## wherein R 1 , R 2 , R 4 and R 5 is hydrogen, alkyl, cycloalkyl, alkyl, cycloalkyl, aralkyl or phenyl; R is...
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5843339 |
Phosphites and their production and use
Phosphites represented by the general formula (I): ##STR1## wherein R 1 , R 2 , R 4 and R 5 independently represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group...
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5786497 |
Process for the preparation of phosphites
A process for producing organo-phosphites is described that involves heating a di-substituted phosphorohalidite, a phenolic compound, and a polymeric amine. An especially useful polymeric amine is...
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5677432 |
Immunological detection of organophosphates
A compound useful for forming immunoconjugates used in the detection of organophosphate pesticides is provided. The compound has the formula ##STR1## wherein X is selected from the group consisting...
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5623009 |
Neo-diol phosphites as polymer stabilizers
A phosphite is provided having the formula: ##STR1## wherein Y 1 is an alkyl group and Y 2 is selected from the group consisting of sec-butyl and tert-butyl. The phosphite exhibits enhanced...
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5600032 |
Method for producing an unsaturated alcohol
A method for producing an unsaturated alcohol having a chain structure formed by oligomerization of a conjugated alkadiene, which comprises reacting a conjugated alkadiene and water in the presence...
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5576365 |
Phosphorus type stabilizer and an organic material stabilized by the same
An organic phosphorus compound represented by the following formula (I): ##STR1## wherein R 1 and R 2 independently represent alkyl having 1-8 carbon atoms, cycloalkyl having 5-8 carbon atoms,...
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5464889 |
Phosphite antioxidants
Neoalkyl phosphite provided which exhibit improved levels of stability. The phosphites are hindered and are useful in stabilizing thermoplastic compositions.
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5451623 |
Neoalkyl alkylidene-2,2'-bisphenyl and biphenyl phosphite esters
Neoalkyl alkylidene-2,2'-bisphenyl phosphite esters are provided. The phosphites exhibit enhanced thermal and hydrolytic stability, and are useful as additives in thermoplastic resin compositions...
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5362898 |
Bis(pentaerythritol phosphate alcohol) alkylphosphonate
A bis(pentaerythritol phosphate alcohol) alkylphosphonate compound, such as one comprising an alkyl group of from about one to four carbon atoms, preferably bis(pentaerythritol phosphate alcohol)...
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5308902 |
Biphosphites
Biphosphites of formula I ##STR1## wherein m is 0, 1 or 2, n is 1 to 4 or 6, R 1 is hydrogen or C 1 -C 4 alkyl and, if m=2, the radicals R 1 are identical or different, and A is the...
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5210259 |
Process for the oxidation of dialkyl esters of 2-hydroxy-ethylphosphonic acid
A process for the preparation of diesters of carboxymethylphosphonic acid of the formula: (RO) 2 P(O)CH 2 CO 2 H, in which R is a straight-chain or branched alkyl radical having 1 to 20 carbon...
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5142083 |
Tetrahydroabietyl organophosphites
Hydrolytically stable phosphite compositions for melt flow and color stabilization of thermoplastics may be prepared from crude tetrahydroabietyl alcohol. The phosphites may be prepared by reacting...
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5132445 |
5,5-bis (perfluoroalkylheteromethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinanes, and salts or esters thereof
5, 5-Bis(perfluoroalkylheteromethyl)-2-hydroxy-2-oxo-1,3,2-diox
aphosphorinane s, derived acyclic phosphorus and phosphoric acids obtained by ring-opening, and salts or esters thereof are prepared...
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5126475 |
Process for the preparation of organic phosphites which are stable to hydrolysis
Preparation of phosphites which are stable to hydrolysis from organic phosphites or phosphorus-halogen compounds and an ammonium salt of a hydroxysulfonic acid which is insoluble in water and...
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5104579 |
Phosphonate adducts of olefinic lubricants having enhanced properties
It has now been discovered that oligomers of C 6 - C 20 alpha-olefins, such as 1-decene, with branch ratios below 0.19 and high viscosity indices (HVI) can be functionalized to provide unique...
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5071577 |
Phosphite derived propylene based multifunctional lubricants and multifunctional lubricant additives
Novel phosphite derivatives of propylene based lube olefins are novel lubricating fluid media with internal synergistic multifunctional extreme pressure, antiwear and antioxidant properties. These...
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5043465 |
Organic phosphorus compounds complexed to boron, their preparation and applications
New organic phosphorus compounds, comprised of hetero-phosphacycloalkanes whose phosphorus atom forms a complex with a borane. They can be prepared by the action of a borane on a...
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4999393 |
Phosphonite compound and synthetic resin composition
A cyclic phosphonite compound having the following formula (I) is disclosed and useful as a stabilizer for a synthetic resin. ##STR1## in which R1 is an alkyl, phenyl or an alkylphenyl, R2 is...
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4929654 |
Cyclic phosphites and stabilized polymeric compositions
Disclosed are novel cyclic phosphite compounds having the formula ##STR1## wherein each R 1 is independently selected from hydrogen, alkyl, aralkyl, aryl, carboxy, alkoxycarbonyl or halogen; ...
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4885401 |
Bis-phosphite compounds
Transition metal-bis-phosphite catalyzed carbonylation processes, especially hydroformylation, as well as transition metal-bis-phosphite compositions, bis-phosphite ligands and transition...
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4882374 |
Dioxaphosphorinane compounds and polyolefin compositions sabilized therewith
Disclosed are novel cyclic phosphite compounds having the formula ##STR1## wherein R 1 is hydrogen, alkyl or aralkyl; R 2 is hydrogen or alkyl; R 3 is alkyl or aryl; and R 4 and R 5 each is...
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4880546 |
Recovery of transition metals from aqueous solutions
Process for the recovery of a transition metal from an aqueous solution containing a complex of the transition metal with a cyclic phosphite by hydrolyzing the cyclic phosphite, contacting the...
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4855345 |
Stabilizers for organic polymers
Compounds of the formula I ##STR1## in which n is 1, 2 or 3, R 1 is C 1 -C 5 -alkyl, cyclohexyl or α-methylcyclohexyl and, if n is 1, X is a group of the formula II or III ##STR2## in which R 2...
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4835299 |
Process for purifying tertiary organophosphites
A process for purifying tertiary organophosphites by removing secondary organophosphites therefrom.
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4789753 |
Phosphite ligands
Transition metal-diorganophosphite complex catalyzed carbonylation processes, especially hydroformylation, as well as transition metal-diorganophosphite ligand complex compositions,...
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4673701 |
Alkylidene bisphenol phosphites and phosphates having 2,2,6,6-tetramethyl piperidinyl groups and synthetic resin composition
Alkylidene bisphenol phosphites and phosphates having 2,2,6,6-tetramethyl piperidinyl groups are provided having the formula: ##STR1## wherein: R 1 is alkyl having from one to about twelve carbon...
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4605692 |
Substituted dibenzo dioxaphosphepins and dioxaphosphocins as stabilizers
Hydroxyphenylthio-substituted phosphites of the formula ##STR1## prepared by the reaction of the appropriate phosphorus and phenol compounds, said phosphites being useful as stabilizers of organic...
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4529533 |
Substituted 2-(2,6-di-t-butly-4-alkylphenoxy) 4H-1,3,2-benzodioxaphosphorins and compositions thereof
Substituted 2-(2,6-di-t-butyl-4-alkylphenoxy)-4H-1,3,2-benzodioxaphospho
rins that are readily prepared, for example from hindered phenols and ortho-methylolphenols, are effective heat and...
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4524166 |
Primary or secondary amino substituted dibenzo dioxaphosphepins and dioxaphosphocins
Primary or secondary amino substituted hindered phosphites of the formula ##STR1## are prepared by reaction of the appropriate phosphorus and phenol compounds, said hindered phosphites being useful...
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4495320 |
3,6-Di-t-butyl-2-naphthyl catechol phosphite and compositions thereof
3,6-di-t-butyl-2-naphthyl catechol phosphite is readily prepared by the reaction of catechol phosphorodichloridite and 3,6-di-t-butylnathphol in the presence of a trialkyl amine in a solvent. The...
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4420437 |
Preparation of a 2-aralkyl-5,5-dialkyl-1,3,2-dioxaphosphorinan-2-one from 2-aralkoxy-5,5-dialkyl-1,3,2-dioxaphosphorinane
A process for preparing a 2-aralkyl-5,5-dialkyl-1,3,2-dioxaphosphorinan-2-one by heating a 2-aralkyloxy-5,5-dialkyl-1,3,2-dioxaphosphorinane such as the novel...
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4416829 |
Poly-hindered phenol-phosphites and process for preparation
Cyclic phosphite structure-containing polyalkyl hindered phenol tetramers are disclosed as novel compounds useful to impart to lubricant oils oxidation and corrosion inhibition. A novel preparative...
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4362830 |
Hindered bis-phenol phenyl phosphites and synthetic resin compositions having enhanced stability to heat and light
Hindered bis-phenol phenyl phosphites are provided having the structure: ##STR1## wherein: R is selected from the group consisting of alkyl having from one up to about eighteen carbon atoms;...
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4333868 |
Phosphite ester stabilizers
Compounds of the formula I ##STR1## in which R 1 and R 2 independently of one another denote alkyl, cycloalkyl or aralkyl, R 3 denotes hydrogen or, conjointly with R 1 , denotes tetramethylene,...
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4322527 |
6-Amino-dibenz[d,g][1,3,2]dioxaphosphocines
Compounds of the formula I ##STR1## wherein R 1 is hydrogen, C 1 -C 18 alkyl, C 5 -C 12 cycloalkyl, phenyl or C 7 -C 9 phenylalkyl and R 2 is hydrogen or C 1 -C 18 alkyl, or, if R 1 is...
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4288391 |
Alkylated 2,2'-biphenylene phosphites
Alkylated 1,1'-biphenyl-2,2'diyl phosphites are prepared by reacting alkylated 2,2'-biphenol with phosphorous trichloride in an organic solvent and then reacting the intermediate with an alcohol or...
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