Abstract

Mixtures of three types of linear, branched or cyclic phosphates are useful flame retardants, especially for thermoplastic resins or as functional additives in polymer matrices.

IPC Classes  ?

• C08K 5/5317 - Phosphonic compounds, e.g. R—P(:O)(OR')2
• C08K 5/5333 - Esters of phosphonic acids
• C08K 5/5357 - Esters of phosphonic acids cyclic
• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• C07F 9/40 - Esters thereof

Abstract

The present invention relates to the use of dendrimers with monophosphonic or bisphosphonic terminations in order to stimulate the growth of cell cultures or to activate cells in culture.

IPC Classes  ?

• A61K 31/66 - Phosphorus compounds
• A61K 31/663 - Compounds having two or more phosphorus acid groups or esters thereof, e.g. clodronic acid, pamidronic acid
• A61K 31/675 - Phosphorus compounds having nitrogen as a ring hetero atom, e.g. pyridoxal phosphate

Abstract

The present invention relates to a method for eliminating or attenuating the problems associated with corrosion and to novel formulations to be used in such a method.

IPC Classes  ?

• C02F 5/14 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
• C02F 1/50 - Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment

Abstract

The invention relates to a method for the production of a bisphosphine, consisting in reacting a phosphine with a dihalide in the presence of an acid.

IPC Classes  ?

• C07F 9/50 - Organo-phosphines

Abstract

The invention relates to a novel product comprising a mixture of linear, branched or cyclic phosphates, to a method for synthesising said novel product and to the use thereof in the form of a fireproof agent in particular for thermoplastic resins or functional additives in polymer matrices.

IPC Classes  ?

• C08K 5/5357 - Esters of phosphonic acids cyclic
• C07F 9/6571 - Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having phosphorus atoms, with or without nitrogen, oxygen, sulfur, selenium or tellurium atoms, as ring hetero atoms having phosphorus and oxygen atoms as the only ring hetero atoms

Abstract

The invention concerns a method for analyzing and controlling antiscale content in the presence of perturbing ions. In particular, the antiscale agents to be analyzed or controlled are polymers and comprise an anionic group, such as a strong acid group, but can also comprise phosphonates or phosphate esters.

IPC Classes  ?

• G01N 30/00 - Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
• B01D 15/36 - Selective adsorption, e.g. chromatography characterised by the separation mechanism involving ionic interaction, e.g. ion-exchange, ion-pair, ion-suppression or ion-exclusion
• B01J 20/32 - Impregnating or coating
• B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material

Abstract

The invention relates to a method of inhibiting fouling by silica and silicates in aqueous systems and, in particular, to the use of graft copolymers comprising at least three chemically-different blocks in order to inhibit the deposit of silica and silicate scale on surfaces.

IPC Classes  ?

• C02F 5/10 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
• C08F 290/04 - Polymers provided for in subclasses or

Abstract

The invention relates to a method of controlling sludge formation caused by ferric ions in a crude oil extraction process under acid stimulation conditions. According to the invention, an effective quantity of an alkylated phosphonic acid or an ester of same or an aminophosphonate is added to the stimulation liquid or the formation fluids.

IPC Classes  ?

• C09K 8/524 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
• C09K 8/54 - Compositions for in situ inhibition of corrosion in boreholes or wells

Abstract

A synergistic composition comprising a THP salt and a biopenetrant, in which the biopenetrant comprises a polymer of an unsaturated carboxylic acid or a copolymer of an unsaturated carboxylic acid with a sulphonic acid, said polymer or copolymer being terminated by a mono- or diphosphonated unsaturated carboxylic acid group or having such monomers incorporated into the polymer backbone. This composition acts synergistically to enhance the biocidal efficacy of the THP salt against both planktonic (free-swimming) and sessile (attached) bacteria, and also acts synergistically to enhance the efficacy of the THP salt in the dissolution of iron sulphide scale.

IPC Classes  ?

• A01N 57/34 - Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-halogen bondsPhosphonium salts
• A01N 25/10 - Macromolecular compounds
• A01N 25/30 - Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of applicationSubstances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
• C02F 5/14 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus

Abstract

The invention relates to novel dendritic polymers having biphosphonic terminations, to derivatives thereof, to a method for preparing them and to their uses.

IPC Classes  ?

• C07F 9/02 - Phosphorus compounds

Abstract

The invention relates to novel dendritic polymers having monophosphonic terminations or dimethyl phosphonates, to a method for preparing them, and to their uses.

IPC Classes  ?

• C07F 9/02 - Phosphorus compounds

Abstract

The present invention relates to a method of treating an aqueous system containing or in contact with metal sulphide scale. The method comprises adding to said system, separately or together, sufficient of a synergistic mixture comprising a THP?+¿ salt, an aqueous solution of a strong acid (and optionally a source of nitrogen) to provide a solution containing from 0.1 % to 30 % by weight of the THP?+¿ salt at a pH of less than about 1Ø The scale is contacted with said solution, (thereby dissolving at least part of said scale in said solution) and the dissolved scale is withdrawn from the system.

IPC Classes  ?

• C02F 5/14 - Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus