- SILICON DIOXIDE COMPOSITE PARTICLE WITH FAR-INFRARED RADIOACTIVITY; PRECURSOR OF THE SAME AND APPLICATION THEREOF
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The present invention relates to a silicon dioxide composite particle with far-infrared radioactivity, which is formed by the hydrolysis, condensation and polymerization of an organic silane precursor having the structure of the formula (I) with a tetra-alkoxysilane. The high stability of organic silane precursor compounds and the low biotoxicity of silicon dioxide composite particles make the present far-infrared radioactive silicon dioxide composite particles of great potential for extensive use in related bio-products. [in-line-formulae]A-R1—Si(OR2)3?? Formula (I)[/in-line-formulae]
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Paragraph 0039-0041; 0048-0050
(2020/07/04)
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- The isocyanate group-containing alkoxysilane method (by machine translation)
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[Problem] an isocyanate group-containing alkoxysilane isocyanate group-containing alkoxysilane having high purity can be efficiently produced. [Solution] The amino group-containing alkoxysilane is reacted with dialkyl carbonate, carbamate alcohol mixture is obtained. Then, the mixture was heated to obtain an isocyanate group-containing alkoxysilanes. In this case, alcohol-containing fractions of 1 second, isocyanate group-containing alkoxysilane containing 2 fractions of a second, annular byproducts including 3 a fraction is obtained. The, the first fraction of the heated mixture before mixing 3, annular reaction byproduct alcohol, cyclic carbamate returned products. Figure 1 [drawing] (by machine translation)
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Paragraph 0084-0088
(2020/10/03)
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- MANUFACTURING METHOD OF CARBAMATE ALKYLSILANE
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PROBLEM TO BE SOLVED: To provide a manufacturing method capable of providing carbamate alkylsilane effectively from a reaction mixture obtained from a reaction of aminoalkylsilane and a carbonic ester compound at high purity and high yield. SOLUTION: There is provided a manufacturing method of carbamate alkylsilane of the formula (3) by distilling a reaction mixture obtained by reacting an organic silicate compound represented by the formula (1) and a carbonic ester compound represented by the formula (2) in a presence of a metal catalyst containing one or more kinds of metal selected from Mn and Zn. R1 is a substituted/unsubstituted bifunctional hydrocarbon group with 3 to 6 carbon atoms, R2 and R3 are each independently a substituted/unsubstituted C1 to 10 monovalent hydrocarbon group and n is an integer of 0 to 2. R4 is each independently a substituted/unsubstituted C1 to 10 monovalent hydrocarbon group. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPOandINPIT
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Paragraph 0030-0040
(2018/03/23)
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- METHOD FOR PRODUCING CARBAMATOORGANOSILANES
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Carbamatoorganosilanes are produced in exceptionally high yield with a high degree of purity, by reacting an aminoorganosilane with a dialkylcarbonate in the presence of a basic catalyst, wherein a first reaction period proceeds at a temperature in the range of 35-65° C., followed by a later reaction period at a temperature at least 10° C. higher. A low level of catalyst allows its removal by simple exit filtration, without a separate filtration step.
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Paragraph 0085; 0086; 0087; 0088; 0089
(2016/08/17)
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- Process for the preparation of N-silylorganocarbamates
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A process is provided for preparing an N-silylorganocarbamate, which comprises: providing a mixture of aminoorganosilane and a catalytically effective amount of basic catalyst and; combining the mixture of aminoorganosilane and basic catalyst with an organocarbonate ester the mixture of aminoorganosilane and basic catalyst, the organocarbonate ester or both being at elevated temperature at the time of their being combined.
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Page column 8
(2008/06/13)
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