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    SPHERICAL FINE PARTICLE OF SILICONE AND PRODUCTION THEREOF
    24.
    发明专利
    SPHERICAL FINE PARTICLE OF SILICONE AND PRODUCTION THEREOF 失效

    公开(公告)号：JPS63312324A

    公开(公告)日：1988-12-20

    申请号：JP14838387

    申请日：1987-06-15

    Applicant: TORAY INDUSTRIES

    Inventor： WATANABE TETSUYA ,  AIZAWA HIDEYUKI ,  NAGAI YOSHIYUKI ,  SUZUMURA TSUGIO ,  KIMURA TAKESHI

    IPC: C08G77/04 ,  C08G77/06 ,  C08G77/22 ,  C08J3/12

    Abstract: PURPOSE:To obtain the titled particle having specific constitution unit, particle diameter and coefficient of variation, etc., and useful as an additive for cosmetic, paints, etc., to improve the water-repellency, etc., by condensing a silane compound and a polysiloxane using a nitrogen-containing aromatic heterocyclic compound as a solvent. CONSTITUTION:The objective particle having a ratio of the major diameter to the minor diameter of =80% of a polysiloxane composed of (i) 0-20mol.% of a unit of formula I (R is 1-4C alkyl, 2-4C alkenyl or phenyl), (ii) 20-95mol.% of the unit of formula II and (iii) 3-70mol.% of the unit of formula III can be produced by condensing (A) a silane compound and/or polysiloxane in (B) a solvent compound mainly of a nitrogen-containing aromatic heterocyclic compound in the presence of (C) a condensation catalyst.

    PRODUCTION OF AMINOOSCHIFF BASE
    25.
    发明专利
    PRODUCTION OF AMINOOSCHIFF BASE 失效

    公开(公告)号：JPS5639071A

    公开(公告)日：1981-04-14

    申请号：JP11450279

    申请日：1979-09-06

    Applicant: TORAY INDUSTRIES

    Inventor： SETSUDA TSUTOMU ,  AIZAWA HIDEYUKI ,  KIMURA TAKESHI

    IPC: C07D223/04

    Abstract: PURPOSE:The decarboxylation dimerization of lithium epsilon-aminocaproate is effected by heating and dry-distilling it alone to produce the titled compound such as alpha,omega- undecamethylenediamine, which is used as a starting material for high-molecular- weight polymers. CONSTITUTION:The decarboxylation dimerization of lithium epsilon-aminocaproate of formula I is conducted by heating and dry-distilling at 250-550 deg.C, preferably 300- 400 deg.C to produce 7-(5'-aminopentyl)-3,4,5,6-tetrahydro-2H-azepin, that is, an amino-Schiff base. The purity of the raw material is enough to be at a level of 90% and the coexistence of an alkaline earth metal oxide or hydroxide such as calcium oxide increases the yield. The starting material, for example, lithium epsilon- aminocaproate, is prepared by heating together epsilon-caprolactam and a lithium compound directly. EFFECT:The reaction proceeds almost homogeneously and smoothly with high reproductivity. The lithium carbonate, a by-product, can be reused.

    PRODUCTION OF AMINOOSCHIFF BASE
    26.
    发明专利
    PRODUCTION OF AMINOOSCHIFF BASE 失效

    公开(公告)号：JPS5639066A

    公开(公告)日：1981-04-14

    申请号：JP11450679

    申请日：1979-09-06

    Applicant: TORAY INDUSTRIES

    Inventor： SETSUDA TSUTOMU ,  AIZAWA HIDEYUKI ,  KIMURA TAKESHI

    IPC: C07D223/04 ,  C07D207/20 ,  C07D211/70 ,  C07D211/76 ,  C07D225/02

    Abstract: PURPOSE:A lactam is heated in the presence of water and a metal carbonate to remove carbon dioxide evolved, the product is heat decomposed to produce the title compound and the metal carbonate is recycled, whereby this process forms a closed system and gives high yield with industrial advantage. CONSTITUTION:In the presence of water and an alkali or alkaline earth metal carbonate such as lithium carbonate, a lactam of 5 or more membered ring, its oligomer, its ring-opened polymer, or its ring-opened monomer, omega-aminocarboxylic acid, is heated at 60-350 deg.C and the carbon dioxide evolved is removed to form a metal salt of omega-aminoalkanecarboxylic acid. The product is heated at 250-550 deg.C and dry distilled to give an amino-Schiff base of formula I (n is 4 or more) or II or its ring-opened hydrate, i.e., an alpha,omega-diaminoketone, and a metal carbonate, which is recycled. USE:A raw material for alpha,omega-diaminoalkane, which is used for the production of high- molecular-weight compounds.

    PREPARATION OF OMEGAAAMINOALKANECARBOXYLIC ACID
    27.
    发明专利
    PREPARATION OF OMEGAAAMINOALKANECARBOXYLIC ACID 失效

    公开(公告)号：JPS5639050A

    公开(公告)日：1981-04-14

    申请号：JP11450379

    申请日：1979-09-06

    Applicant: TORAY INDUSTRIES

    Inventor： SETSUDA TSUTOMU ,  AIZAWA HIDEYUKI

    IPC: C07C227/22 ,  C07C67/00 ,  C07C227/00 ,  C07C227/18 ,  C07C229/08

    Abstract: PURPOSE:To obtain the titled compound useful as a raw material for synthesis of a high polymer by a simple operation in high yield in high purity, by hydrolyzing a lactam with LiOH, converting Li to a salt slightly soluble in water CO2 or a specific acid, followed by removing it by separation. CONSTITUTION:A lactam(5-13 membered ring lactam, its oligomer, or its polymer through ring opening) is hydrolyzed in the presence of LiOH at 60-300 deg.C to prepare a lithium salt of an omega-aminoalkanecarboxylic acid. The reaction solution is saturated with CO2 introduced, Li2CO3 is deposited, or an acid, e.g., phosphoric acid, sulfuric acid, etc. is added to form a metallic salt of lithium slightly soluble in water, which is separated and removed to give the titled compound. EFFECT:A raw material for lactam which is not high quality can be used. When CO2 is used, Li2CO3 prepared as a byproduct can be used effectively as a raw material for producing an Li compound.

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