摘要:
There is provided a process capable of preventing the adhesion of a catalyst to an evaporator in a step of separating a chlorophosphite as a target substance from a reaction liquid by evaporation. The process includes a first step of allowing phosphorus trichloride and a phosphorous acid triester represented by (RO)3P to react in the presence of a catalyst having a viscosity at 80° C. of 100 mPa·s or lower to produce a chlorophosphite represented by RO(R′)PCl, and a second step of vaporizing a reaction liquid containing the chlorophosphite obtained in the first step, in a short time, to separate the catalyst.
摘要:
There is provided a process capable of preventing the adhesion of a catalyst to an evaporator in a step of separating a chlorophosphite as a target substance from a reaction liquid by evaporation. The process includes a first step of allowing phosphorus trichloride and a phosphorous acid triester represented by (RO)3P to react in the presence of a catalyst having a viscosity at 80° C. of 100 mPa·s or lower to produce a chlorophosphite represented by RO(R′)PCl, and a second step of vaporizing a reaction liquid containing the chlorophosphite obtained in the first step, in a short time, to separate the catalyst.
摘要:
A catalyst for curing epoxy resins comprises a tetraalkylphosphonium tetrafluoroborate represented by Formula (1): wherein R1, R2, R3, and R4 are each C1-C5 linear or branched alkyl and may be the same or different, and the halogen ion content in the tetraalkylphosphonium tetrafluoroborate is 20 ppm or less. An epoxy resin powder coating composition containing this catalyst exhibits a prolonged pot life and can be baked at decreased temperatures.
摘要:
The antistatic agent for resins of the present invention contains phosphonium salts represented by the general formula (1) below: (wherein R1, R2, and R3 are each a straight-chain or branched alkyl group having 3 to 8 carbon atoms, and R4 is a straight-chain or branched alkyl group having 10 to 22 carbon atoms; each alkyl group may have substituted hydroxy group or alkoxy group; R1, R2, and R3 may be the same or different from each another; and X− is a tetrafluoroborate ion or a hexafluorophosphate ion).
摘要:
A phosphorus-containing epoxy resin has a structural unit derived from a secondary phosphine derivative represented by the following formula: wherein R1 represents an alkylene group that may have a substituent, R2 represents a cycloalkylene or arylene group that may have a substituent, and X represents an oxygen or sulfur atom.
摘要翻译:含磷环氧树脂具有衍生自由下式表示的仲膦衍生物的结构单元:其中R 1表示可以具有取代基的亚烷基,R 2 O / >表示可以具有取代基的亚环烷基或亚芳基,X表示氧或硫原子。
摘要:
The antistatic agent for resins of the present invention contains phosphonium salts represented by the general formula (1) below: (wherein R1, R2, and R3 are each a straight-chain or branched alkyl group having 3 to 8 carbon atoms, and R4 is a straight-chain or branched alkyl group having 10 to 22 carbon atoms; each alkyl group may have substituted hydroxy group or alkoxy group; R1, R2, and R3 may be the same or different from each another; and X− is a tetrafluoroborate ion or a hexafluorophosphate ion).
摘要翻译:本发明的树脂用抗静电剂含有下述通式(1)表示的鏻盐:(其中R 1,R 2,R 2,R 3, 各自为具有3至8个碳原子的直链或支链烷基,R 4为具有10至22个碳原子的直链或支链烷基;每个烷基 可以具有取代的羟基或烷氧基; R 1,R 2,R 3和R 3可以彼此相同或不同;和 X - 是四氟硼酸根离子或六氟磷酸根离子)。
摘要:
A phosphorus-containing epoxy resin has a structural unit derived from a secondary phosphine derivative represented by the following formula: wherein R1 represents an alkylene group that may have a substituent, R2 represents a cycloalkylene or arylene group that may have a substituent, and X represents an oxygen or sulfur atom
摘要翻译:含磷环氧树脂具有衍生自由下式表示的仲膦衍生物的结构单元:其中R 1表示可以具有取代基的亚烷基,R 2 O / >表示可以具有取代基的亚环烷基或亚芳基,X表示氧或硫原子
摘要:
A method of preparing diarylchlorophosphate comprising the step of reacting alkyldiarylphosphate represented by formula (1) and thionyl chloride in the presence of a catalyst:R.sup.1 O--P(O)(OAr).sub.2 (1)(where R.sup.1 represents an alkyl group having 1 to 4 carbon atoms, and Ar represents a substituted or unsubstituted aryl group). According to the invention there is provided a method of preparing diarylchlorophosphate having a high purity at a high yield, which can be advantageously used in industrial applications.
摘要:
The present invention discloses an agent and a method of treating wool fibers using the agent which contains as an active ingredient, one or more water-soluble organic phosphine compounds selected from the group comprising hydroxyalkylphosphines expressed by the following formula: ##STR1## (wherein R.sup.1 denotes a hydroxyalkyl group having 1 to 10 carbon atoms and R.sup.2 and R.sup.3 each denotes an alkyl or hydroxyalkyl group having 1 to 10 carbon atoms) and derivatives thereof such as alkylene oxide addition products, phosphonium salts and quaternary phosphonium compounds thereof.
摘要:
An organo phosphoric acid dithioester is produced by reacting either O-ethyl.S-normalpropyldithiophosphoric acid salt and substituted ethylmercaptoethyl halide or O-ethyl.S-normalpropylthiophosphoric acid halide and substituted ethylmercaptoethylmercaptans. Said organo phosphoric acid dithioester has excellent insecticidal activity against a wide variety of insects.