37 results about "Phosphonic Acid Esters" patented technology

The present invention provides methods and compositions for sealing subterranean zones containing oil to prevent the uncontrolled flow of fluids into or from the zones. The compositions basically comprise water, a phosphonic acid ester, a multivalent metal ion releasing compound and an organophilic clay.

A thermoplastic molding composition suitable for preparing articles by thermoforming is disclosed. The molding composition that comprise A) branched, aromatic poly(ester)carbonate, B) graft polymer, C) an optional vinyl(co)polymer and or polyalkylene terephthalate, D) at least one flame retarding phosphorous compound selected from the group consisting of mono- and oligomeric phosphorus and phosphonic acid esters, phosphonate amines and phosphazenes and E) talc, is characterized in that its flexural modulus at room temperature is at least 3000 N/mm² and that its falling dart energy at break, at −30° C., is at least 40.0 J. Sheets extruded of the composition are suitable for making useful articles by thermoforming.

The invention relates to a preparation method for an anti-flaming polyurethane elastic fiber. The permanent flame retardancy can be guaranteed through copolymerization with a phosphorus flame retardant; the high anti-flaming characteristic is further guaranteed through blending with a small quantity of anti-flaming auxiliaries such as a halogen-free phosphonic acid ester flame retardant, a tripolycyanamide flame retardant and an aluminum oxide flame retardant to weaken the combustion dripping performance for preparing an excellent spinning solution; the anti-flaming polyurethane elastic fiber is prepared by the spinning solution and two main subsequent dry spinning procedures. The anti-flaming polyurethane elastic fiber prepared by the method is excellent in permanent flame retardancy, free from damage to fiber elasticity, good in safety and environment-friendly, achieves good effects on preventing, delaying or terminating fire and is particularly suitable for protection suits, household articles, decoration articles and juvenile costumes used in anti-flaming occasions.

The present invention aims to provide an additive for a non-aqueous electrolyte solution with excellent storage stability capable of forming a stable SEI on the surface of an electrode to improve cell performance such as a cycle performance, a discharge/charge capacity, and internal resistance, when the additive is used for electrical storage devices such as non-aqueous electrolyte solution secondary cells and electric double layer capacitors. The present invention also aims to provide a non-aqueous electrolyte solution containing the additive for a non-aqueous electrolyte solution and to provide an electrical storage device using the non-aqueous electrolyte solution. The present invention is an additive for a non-aqueous electrolyte solution, comprising a compound that has a structure represented by the formula (1-1) or (1-2):

in which A represents C_mH_(2m-n)Z_n, m being an integer of 1 to 6, n being an integer of 0 to 12, and Z representing a substituted or unsubstituted alkyl group, a silyl group, a phosphonic acid ester group, an acyl group, a cyano group, or a nitro group, the compound having a lowest unoccupied molecular orbital energy of −3.0 to 0.4 eV, a standard enthalpy of formation of −220 to −40 kcal/mol, and an enthalpy change with hydrolysis reaction of −5 to 5 kcal/mol.

The invention discloses a non-combustible secondary lithium battery which comprises a positive electrode, a negative electrode and an electrolyte. The non-combustible secondary lithium battery is characterized in that the solvent of the electrolyte is phosphonic acid ester compounds, and the electrolyte comprises lithium salt. The negative electrode materials are silicon substrate alloy or tin base alloy or antimony alloy. The phosphonic acid ester compounds are used as the solvent of the electrolyte of the secondary lithium battery, a non-combustible battery system is prepared, and safety performance of the secondary lithium battery is improved. In addition, in order to overcome the defect that the compatibility between the phosphonic acid ester compounds and a graphite electrode is poor, the silicon substrate alloy or the tin base alloy or the antimony alloy or the like is adopted to replace original graphite to be used as the negative electrode materials of the battery, and the negative electrode materials have electrochemical performance similar to that of a conventional carbonic ester electrolyte. Due to the fact that the electrolyte is non-combustible, the secondary lithium battery with the non-combustible electrolyte has higher safety.

The invention discloses a method for preparing ammonium molybdate from molybdenum calcine by a synergistic acid leaching method. The method comprises the following steps: mixing molybdenum calcine with acid and an organic matter, decomposing the molybdenum calcine, and finally enabling molybdenum to be selectively combined with the organic matter and enter an organic phase, where impurities are retained in slag or a water phase, and the aims of decomposing the molybdenum calcine and separating the impurities are fulfilled. According to the method, the organic matter such as acidic phosphate ester, acidic phosphonic acid ester and oxime is mixed with a diluents to obtain an organic phase and acid which are mixed with the molybdenum calcine together to fulfill the aims of decomposing the molybdenum calcine and separating the impurities; and the process is short and simple, the reaction speed is high, the molybdenum decomposing rate is high, and the impurity separation effect is good.

The invention discloses a method for preparing a 2-phosphonic acid ester base-1, 3-dicarbonyl derivative. A 1, 3-dicarbonyl derivative and trialkyl phosphite ester are used as starting materials, and a great variety of raw materials are easy to obtain. Varied types of products are obtained through the method, can be directly used, and can also be used for other further reactions. In addition, the reaction is performed in air, the condition is mild, the reaction time is short, the target product yield is high, pollution is small, the reaction operation and aftertreatment process is simple, and the method is suitable for industrial production.

Novel alkenylphosphonic acid esters of the following general formula (I):

R¹CH═CR²[P(O)(OCR³R⁴CR⁵R⁶O)]  (I)

and a simple process for the preparation thereof are provided by the use of secondary cyclic phosphonic acid esters as the starting material.

The present invention relates to mixtures comprising at least one polyester precursor and at least one alkali- and/or alkaline-earth metal salt where the mixture contains at least one phosphonic acid ester of the Formula (I)

(RO)OC—R′—PO(OR)₂  (I)

where independently R represents a group with 1 to 60 carbon atoms and R′ represents a group with 1 to 20 carbon atoms. Furthermore, the present invention relates to the polyester compositions which can be produced from the mixtures and to the resulting polyester films.

The invention discloses a dyeing and finishing process for a composite fabric. The dyeing and finishing process comprises the following steps of 1 preprocesing; 2 dyeing; 3 finishing, wherein 1-2 parts by weight of oleic acid polyoxyethylene ester, 1.3 parts by weight of propylparaben, 0.9 part by weight of sodium dehydroacetate and 0.9 part by weight of ammonium phosphate are sequentially put into 15 parts by mass of deionized water, the materials are stirred to be uniform, 1.3 parts by weight of resmethrin, 0.4 part by weight of phosphonic acid ester, 0.9 part by weight of dimethyl sulfate and 1.5 parts by weight of diethylenetriamine are simultaneously put, the materials are continuously stirred until the materials are fully mixed to be uniform, finishing liquid is prepared, and the fabric is processed through padding in the finishing liquid and then taken out to be dried at constant temperature. According to the dyeing and finishing process for the composite fabric, the dyed and finished fabric has the excellent flame retardance, mothproof property, mouldproof property, antibacterial property and anti-static property and is high in washability and flexible in handfeel.

Provided are polyester compositions comprising poly(trimethylene terephthalate) and flame retardant additives that are phosphonic acid esters. The compositions can be used to make articles having reduced flammability and reduced yellowness as compared to conventional poly(trimethylene terephthalate) compositions.

The invention discloses a fire retardant containing boron phenyl phosphonic acid esters and a preparation method thereof. The constitutional formula of the fire retardant containing the boron phenyl phosphonic acid esters includes that R is -H, -CH3, -CH2CH3, -CH (CH3)2 or -CH2CH2CH2CH3, and n can be one to five. During preparation, hydroxide radical benzyl alcohol and organic solvent are heated after being mixed, then boron monomers are added into the mixture of the hydroxide radical benzyl alcohol and the organic solvent, the whole system is heated to react under the condition of boiling and then is cooled, and boric acid hydroxide radical benzol methyl ester midbody is prepared. Phenyl phosphorus acyl dichloro and organic solvent are added into the boric acid hydroxide radical benzol methyl ester midbody to react for five to twelve hours, then phenol is added into the boric acid hydroxide radical benzol methyl ester midbody, and the fire retardant containing the boron phenyl phosphonic acid esters is obtained after excessive phenol is removed and the solvent is dried. The fire retardant is solid, cannot move by 'squeezing' and has lower affection on impact performance of high polymer materials.

The invention discloses a method for solvent-free solid phase catalytic synthesis of hydroxyl phosphonic acid ester, and belongs to the field of organic chemistry. According to the structure of the hydroxyl phosphonic acid ester, R1 is hydrogen or C1-5 alkyl group or phenyl group, R2 is hydrogen or C1-alkyl group or phenyl group, R1 and R2 form a 3-5-membered heterocyclic ring, and R3 is methyl or ethyl or propyl group or isopropyl or butyl or isobutyl. The synthetic method comprises the steps that ketone or aldehyde compounds, phosphite ester and solid catalysts are heated to enable compounds with raw materials including carbonyl to be melted, and stirring and reactions are carried out; the compounds are cooled to be indoor temperature, solvents are added, and the hydroxyl phosphonic acid ester is obtained through filtering and recrystallization. The method has the advantages that the technological process is simple, the catalysts and the solvents can be recycled and reused, production cost is low and the quality of the hydroxyl phosphonic acid ester is high, and is suitable for the industrialized synthesis of the hydroxyl phosphonic acid ester.

The invention belongs to the field of chemical synthesis, and in particular relates to a novel method for preparing herbicide, namely glufosinate-ammonium. The method comprises the following steps: conducting addition reaction on methyl phosphonic acid ester compounds and DL-2-hydroxy-3-crotonic acid ester compounds to obtain hydroxybutyric acid ester derivatives, and conducting acidification and ammonification reaction on the hydroxybutyric acid ester derivatives to obtain a glufosinate-ammonium compound. The method can avoid using high-toxic cyanide and obviously shortens a reaction route, so that the reaction steps of a process for preparing glufosinate-ammonium are reduced, the operation is simpler and more convenient, and many times of recrystallization is not needed for removing ammonium salt. The cost is reduced, and the method is completely suitable for large-scale production.

New regulator compounds for a novel polymerization process for vinyl monomers, which yields polymers with improved control over composition and nearly full to full conservation of architectural integrity up to high conversion. The regulator compounds are defined by according to anyone of the Formulas 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H and 1I:

The invention relates to a preparing method of a temporary soluble type viscose microcapsule flame retardant and belongs to the technical field of flame retardant preparation. According to the method, at first, 4,4'-diamino benzanilide and deionized water are stirred and mixed, hydrochloric acid is added, the mixture is subjected to a water-bath heating reaction and cooled, a sodium hydroxide solution and sodium carbonate continue to be added, after stirring and mixing are carried out, toluene is added, then heating is carried out, heat is preserved, after cooling is carried out, benzamide is added dropwise, the mixture is stirred and mixed, after a pH value is adjusted to 7.0, the mixture is evaporated in a rotary mode to be dried, and the mixture is collected and crystallized to prepare a temporary soluble product; the temporary soluble product is mixed with substances like dimethyl methyl phosphonic acid ester to prepare a temporary solution, the temporary solution is mixed with cyclohexane, subjected to ultrasonic oscullating, placed into a polyvinyl alcohol solution, stirred, mixed, and filtered in a suction mode, and filter cakes are collected, washed and dried to obtain the flame retardant. The phenomena of rubber block generation and reunion in the spinning process are avoided, and a spinning property of viscose is improved; meanwhile, the flame-retardant effect is good, and flame-retardant efficiency is improved by 8-12%.

This invention relates to compounds of Formula (A), and pharmaceutically acceptable salts thereof. This invention also provides compositions comprising a compound of this invention and the use of such compositions in methods of treating diseases and conditions that are beneficially treated by administering a viral DNA polymerase inhibitor.

In a method of producing a polymer for making proton conductive membranes on the basis of a base polymer other than a vinyl polymer said base polymer is a) bromated or iodized, b) the bromated or iodized polymer is reacted with at least one of phosphonic acid esters and phosphoric acid esters in the presence of a transition metal catalyst whereby a reaction polymer is formed, c) the reaction polymer of step b is hydrolyzed, and d) from the hydrolyzed polymer of step c) a polymer film is produced.