Assignee: Daihachi Chemical Industry Co., Ltd.

Location: Osaka, JP
No. of patents: 24

Number	Title	Issue Date
7772440	Process for preparing phosponates having alcoholic hydroxyl group A novel process for preparing in a high purity and in a high yield phosphonates having a secondary and/or tertiary alcoholic hydroxyl group at the end of a P—C bond chain thereof with the use of a phosphite and a carbonyl compound as raw materials. ...	08/10/2010
7728162	Process for preparing phosphorus compounds having phosphate-phosphonate bond A novel process for preparing in a high purity and in a high yield phosphorus compounds having a phosphate-phosphonate bond within one molecule, along with only a small amount of a by-product, without being restricted by the kind of a phosphonate having an alcoholic...	06/01/2010
7521496	Organophosphorus compound having phosphate-phosphonate bond, and flame-retardant polyester fiber and flame-retardant polyurethane resin composition each containing the same A phosphate-phosphonate compound which is lowly volatile, has a high phosphorus content, and does not influence various properties of a product when used as a material therefor. It is reduced in environmental burden in view of suitability for recycling and contains ...	04/21/2009
7235686	Process for preparing phosphoric esters A process for preparing a phosphoric ester, comprising: Step (1) of reacting naphthol with phosphorus oxychloride in a molar ratio of 1:1.3 or more in the presence of a metallic halide and removing unreacted phosphorus oxychloride and Step (2) of reacting the reacti...	06/26/2007
7166654	Ester compound, plasticizer for biodegradable aliphatic polyester resin, and biodegradable resin composition An ester compound represented by formula (1) R1OOC—(CH2)m—COOR2 (1) wherein R1 and R2 are different from each other and each represents a group of formula (2) �...	01/23/2007
6734239	Flame retardants for resins and flame-retarded resin compositions containing the same Flame retardants for resins, which contain as the principal component phosphorinane-type phosphates represented by general formula (I) (wherein R1 and R2 are each independently C1-C6 alkyl; and R3 is C1	05/11/2004
6706907	Method of purifying organic phosphoric ester A method of purifying an organic phosphoric ester characterized by treating a crude organic phosphoric ester with an epoxy compound and treating the treated organic phosphoric ester with an alkaline aqueous solution to purify it. The purification method is effective...	03/16/2004
6613928	Process for the preparation of condensed phosphoric esters A condensed phosphoric ester having a very low content of isopropenyl phenyl diphenyl phosphate, which reduces heat resistance and causes the contamination of molds during the molding when the condensed phosphoric ester is used as an additive for a resin,...	09/02/2003
6605737	Process for the preparation of condensed phosphoric acid esters An objective of the present invention is to provide a method for preparing a high-purity, condensed phosphoric ester made of a bisphenol A derivative and having a very low content of monomer-type phosphoric ester that causes reduction in the heat resistan...	08/12/2003
6605736	Process for the preparation of condensed phosphoric esters A condensed phosphoric ester having a very low content of volatile components is provided by a process including a first step of reacting a phosphorus oxytrihalide with a bisphenol-based compound to prepare a phosphorohalidate; a second step of removing u...	08/12/2003
6462216	Process for producing phosphorohalidate The present invention provides a process for producing phosphorohalidate characterized in that a crude reaction product obtained by reacting a phosphorus oxyhalide with an aromatic hydroxy compound in the presence of a Lewis acid catalyst is purified by d...	10/08/2002
6462112	Flame-retarded acrylonitrile-butadiene-styrene resin A flame-retarded resin composition contains: (A) an ABS resin; (B) an aromatic phosphate having a melting point of 80° C. or more and being represented by the following general formula (I): ##STR1## wherein R1 to R4 are, the same or...	10/08/2002
6204404	Process for preparing ester compounds A process for preparing an ester compound comprising reacting a halogen-substituted aliphatic hydroxy compound or aromatic hydroxy compound with a phosphorus oxyhalide or phosphorus pentahalide in the presence of 0.005 to 10 mol % of a phosphorus trihalid...	03/20/2001
6127464	Phosphoric ester, process for preparing the same and use thereof A flame retarder containing a phosphate obtained by reacting a compound represented by the general formula (II): ##STR1## wherein R1 and R2 are, the same or different, a straight or branched-chain alkyl group having 1 to 8 carbo...	10/03/2000
5919968	Process for preparing organic pentavalent phosphorus compounds A process for preparing an organic pentavalent phosphorus compound comprising oxidizing an organic trivalent phosphorus compound with an aqueous hydrogen peroxide solution in the presence of an inorganic or organic base at a temperature of 0° C. to 50° ...	07/06/1999
5880308	Process for preparing aromatic bisphosphates A process for preparing aromatic bisphosphates includes: a first step of reacting an aromatic monohydroxy compound having a steric hindrance group at the ortho position, with a phosphorus oxyhalide in the presence of a Lewis acid catalyst (a) to yield a r...	03/09/1999
5756797	Process for preparing tribromoneopentyl chloroalkyl phosphates A process of preparing a tribromoneopentyl chloroalkyl phosphate of the formula (3): ##STR1## , wherein R is hydrogen atom, an alkyl or chloroalkyl group. The process includes three steps: In the first step, an alkylene oxide is reacted with pho...	05/26/1998
5741913	Process for preparing N-substituted maleimides A process for preparing N-substituted maleimide is disclosed, which includes reacting maleic anhydride with a primary amine using both a non-polar solvent and a protic polar solvent in the presence of an acid catalyst....	04/21/1998
5679824	Method of pulverizing aromatic phosphates A method of pulverizing aromatic phosphates which comprises stressing an oily product of an aromatic phosphate having a purity of 90% or more at a temperature lower by 5° to 100° C. than a melting point of the aromatic phosphate in a temperature-control...	10/21/1997
5627299	Process for preparing tribromoneopentyl chloroalkyl phosphates A process of preparing tribromoneopentyl chloroalkyl phosphates comprising a first step of reacting phosphorus oxychloride with tribromoneopentyl alcohol and a second step of reacting the resultant formed in the first step with an alkylene oxide after a s...	05/06/1997
5616768	Process for purifying phosphoric esters A process for purifying a phosphoric ester, which comprises treating a crude phosphoric ester with an epoxy compound, heating the resultant in the presence of water, washing the resultant with water, and removing the residual water. The obtained phosphori...	04/01/1997
5401788	Organic phosphorus compounds and flame-retarded resin compositions containing the same Organic phosphorus compounds of the formula (I): ##STR1## wherein R1 and R2 are, the same or different, a C1-8 straight chain or branched chain alkyl group, an optionally substituted C6-12 aryl group; and A...	03/28/1995
4983231	Coated magnetic powder and a bonded permanent magnet composition containing the same There is provided a surface-treated magnetic powder that can form a resin-bonded permanent magnet with large magnetic force and a high maximum energy product, which magnetic properties do not decrease even after the long periods of time. The surface-treat...	01/08/1991
4582691	Process for separating Fe(III) from an aqueous solution of metallic salts and a process for separating Fe(III) from an organic extraction solvent A process for separating Fe(III) from an aqueous solution of metallic salts containing at least Fe(III), comprising: (1) bringing said aqueous solution into contact with an organic extraction solvent containing, as an extractant, an organic phosphinic aci...	04/15/1986

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Assignee: Daihachi Chemical Industry Co., Ltd.