Abstract: A method applying a curable sealant composition comprising an oxyalkylene polymer having at least one silicon-containing group to the silicon atom of which a hydroxy group and/or a hydrolyzable group are bonded onto previously applied and cured sealant composition comprising an oxyalkylene polymer having at least one silicon-containing group to the silicon atom of which a hydroxy group and/or a hydrolyzable group are bonded, which method comprises applying a primer comprising a copolymer having at least one silicon-containing group to the silicon atom of which a hydroxy group and/or a hydrolyzable group are bonded,said copolymer having a molecular chain comprising substatially(1) a monomer unit of at least one of an alkyl acrylate and an alkyl methacrylate wherein the alkyl group has from 1 to 8 carbon atoms, and(2) a monomer unit of at least one of an alkyl acrylate and an alkyl methA method foracrylate wherein the alkylgroup has not less than 10 carbon atoms, which method afford superior adhesiveness betwee

Abstract: The present invention provides a polyvinyl graft-polymer having one structural unit having a glycidyloxy group represented by the following general formula (I) at side chains of the polyvinyl polymer per 2-1,000 repeating units of vinyl: ##STR1## wherein Ar represents an aromatic hydrocarbon group 6-23 in carbon number having at least one glycidyloxy group, and R represents hydrogen atom or methyl group, and its manufacturing method. The polyvinyl graft-polymer of the present invention is excellent not only in mechanical properties and heat resistance, but also in adhesiveness, paintability dyeability and antistatic property.

Abstract: An epoxy-terminated polyamide having the following structure: ##STR1## where each of R.sub.1, R.sub.2, and R.sub.3 is a divalent organic group, and each of n and m is a natural number, and an adhesive containing the above epoxy-terminated polyamide, an epoxy resin and a curing agent. The epoxy-terminate polyamide is well compatible with epoxy resins and an adhesive containing the same is excellent in adhesiveness and thermal resistance.

Abstract: There is described a process for preparing 3-(2-thienylthio)butyric acid by converting a compound having the formula (III): ##STR1## wherein R is a straight chain or branched C.sub.1 to C.sub.4 alkyl group, whereby the production of 3-(3-thienylthio)butyric acid as a by-product which is the position isomer can be controlled to at most 0.1 mol %. 3-(2-Thienylthio)butyric acid is a useful compound as an intermediate for a medicinal compound.

Abstract: The present invention provides a powder coating having an excellent curability which can be baked without evaporation of a blocking agent as compared with the conventional powder coating to provide a coat having an excellent yellowing resistance an improved smoothness and weather resistance. A novel powder coating containing, as a main component, a polyester resin composition is provided, comprising (A) an alkenyl group-containing polyester resin with a number-average molecular weight of from 500 to 100,000 having at least 1.2 alkenyl groups on the average per molecule, (B) a Si--H group-containing curing agent having at least two Si--H groups per molecule, and (C) a catalyst active in hydrosilylation.

Abstract: A pile composition containing: from 20 to 60% by weight of synthetic fibers containing a polyester copolymer containing sulfonic groups, which can be dyed with a cationic dye, and from 40 to 80% by weight of synthetic fibers containing at least one of acrylic fibers and modacrylic fibers.

Abstract: The present invention provides a reactive silicon group-containing polymer containing at least one reactive silicon group per molecule, the main chain of the polymer being essentially a copolymer of organopolysiloxane and polyoxyalkylene, which causes no macro phase separation during storage and gives a hardened material having an excellent weathering resistance, little residual tack and excellent coating adhesivity. The present invention provides a process for the preparation of the foregoing reactive silicon group-containing polymer. A novel process for the preparation of the polymer as defined above is provided, which comprises allowing an alkylene oxide to undergo ring opening polymerization with an organopolysiloxane compound having an active hydrogen-containing functional group with which said alkylene oxide is reactive as an initiator in the presence of a catalyst to synthesize a polymer of organopolysiloxane and polyoxyalkylene, and then introducing a reactive silicon group into said polymer.

Abstract: A pile composite with specific appearnace comprising a pile fabric obtained by sliver knitting process, the pile fabric including a ground fabric, substantially straight piles and cone shape piles, both of the piles being developed on a surface of the ground fabric, wherein the cone shape piles are scattered all over the ground fabric and a total area of the cone shape piles at middle portions of the cone shape piles is from 0.5 to 15% of an area of the ground fabric. The pile composite has a specific appearance in which a large number of cone shape piles are developed on the surface of the pile fabric. The method for preparing the pile composite is also disclosed.

Abstract: Heat temperature at the expansion molding of a finished expanded article is decreased by lowering the melting peak temperature of the pre-expanded particles of a polypropylene resin. Comprising the polypropylene resin and a .beta.-crystalline-nucleating agent, the percentage of the .beta.-form in the whole crystalline region is 5 to 100 parts by weight.

Abstract: A curable composition includes (A) 100 parts by weight of an oxypropylene polymer having groups containing silicon atoms bonded to a hydroxy group and/or a hydrolyzable group and capable of crosslinking by forming a siloxane bond, a maximum Mw/Mn of 1.6, and an average molecular weight of at least 6,000, (B) from 100 to 200 parts by weight of calcium carbonate containing at least 30% by weight calcium carbonate of an average particle size of not larger than 0.5 .mu.m and surface-treated with a fatty acid, (C) from 30 to 100 parts by weight of a plasticizer containing at least 5% by weight phthalic acid ester plasticizer, (D) from 0.5 to 10 parts by weight of a compound represented by the formula R.sup.1 Si(OCH.sub.3).sub.3 and/or Si(OCH.sub.2 CH.sub.3).sub.4 (wherein R.sup.1 represents a monovalent organic group containing no amino groups), (E) from 0.5 to 10 parts by weight of a compound represented by following formula (1), and (F) from 0.

Abstract: A resin composition suitable as water-based paints which comprises 100 parts by weight of an emulsion of a polymer obtained by copolymerizing a silyl group-containing vinyl monomer with other vinyl monomers, 1 to 70 parts by weight of a silicon compound and/or its partial hydrolysis condensation product and/or a silicon compound having at least one amino group and/or its derivative and at least one hydrolyzable silyl group in one molecule, and 0 to 20 parts by weight of a curing catalyst. When the resin composition is coated onto materials to be coated, coating films having an excellent stain resistance in addition to excellent weatherability and durability are formed on the sufaces of the materials to be coated.

Abstract: The present invention is directed to a gene which is related to a D-N-carbamoyl-.alpha.-amino acid amidohydrolase which is an enzyme capable of converting D-N-carbamoyl-.alpha.-amino acids into D-.alpha.-amino acids; a recombinant plasmid in which a DNA fragment containing the gene is incorporated into a vector; a microorganism belonging to the genus Escherichia, Pseudomonas, Flavobacterium, Bacillus, Serratia, Corynebacterium, or Brevibacterium, which is transformed by incorporating the recombinant plasmid thereinto; a process for the production of D-N-carbamoyl-.alpha.-amino acid amidohydrolases, comprising the steps of cultivating the transformed microorganism and collecting the desired product therefrom; a D-N-carbamoyl-.alpha.-amino acid amidohydrolase obtained by the method; and a process for the production of D-.alpha.-amino acids with the aid of an action of the enzyme.The D-N-carbamoyl-.alpha.-amino acid amidohydrolase can be fixed on a support for immobilization and used as an immobilized enzyme.

Abstract: Modified cross-section fibers for artificial hair having an improved bulkiness and a soft feeling as compared with conventional fibers for the artificial hair, comprising synthetic fibers, the synthetic fiber having a cross-section comprising one central connecting portion and projections extended in three directions from the central connecting portions, wherein at least one of the three projections is most narrowed at a portion where it is nearer from a top edge of the projection than 1/2 of a length R from a center of the central connecting portion to the top edge of the projection, a ratio of W1/W2 wherein W1 is a width of the widest portion in a portion where it is nearer from the top edge than the most narrowed portion, and W2 is a width of the most narrowed portion is 1.05 to 2.0, and a ratio of R/W1 wherein R and W1 are the same as defined above is from 1.10 to 5.0.

Abstract: An additive having an improved dispersibility or adhesion property to thermoplastic resins and useful for imparting an excellent flame resistance and other properties thereto without deteriorating properties that the thermoplastic resins originally possess, such as mechanical, electrical and thermal properties and molding processability, which comprises a nitrogen-containing heterocyclic compound or its salt surface-treated with 0.1 to 50% by weight of a compound having at least two functional groups such as epoxy resin, acid anhydride or the like; and a flame retardant polyester resin composition comprising (A) a thermoplastic polyester, (B) a nitrogen-containing heterocyclic compound or its salt, (C) a compound having at least two functional groups and optionally (D) a phosphorus based flame retarder, which may be prepared by adding the component (B) previously surface-treated with the component (C) or separately adding the components (B) and (C) to the polyester (A).

Abstract: A curable resin composition comprising (a) an oxyalkylene polymer comprising at least one reactive silicon group per molecule and having a number average molecular weight of not less than 3000 and an Mw/Mn ratio of not higher than 1.6, (b) a curing catalyst for the oxyalkylene polymer containing at least one reactive silicon group per molecule, (c) an epoxy resin, and (d) a ketimine; and a curable resin composition further comprises (e) a reactive silicon group-containing silane compound in addition to (a) to (d).

Abstract: Fiber for artificial hair having an excellent bulkiness and also a soft feeling like the human hair, as compared with conventional fibers, are provided. The fiber comprise synthetic fibers, wherein an apparent bulk specific gravity of the fiber before crimping is within a range of from 0.1 to 0.2, an apparent bulk specific gravity of the fiber after crimping is within a range of from 0.02 to 0.05, a cross-section of the fiber is a modified cross-sectional shape comprising one central connecting portion, and projections extended in at least three directions from the central connecting portion, part of a surface or the entire surface of the fiber is open in the longitudinal direction of the fiber, and the fiber has a single yarn fineness of from 25 to 75 denier.

Abstract: The invention provides novel thermoplastic polyimide featuring solid adhesive property under low temperature, low hygroscopic coefficient, and solid resistivity to radioactive rays. The invention also provides novel polyamide acid which is substantially precursor of the thermoplastic polyimide, and also provides novel thermally fusible laminated film for covering conductive wires, featuring solid adhesive property under low temperature, solid resistivity to radioactive rays, and distinct suitability for covering superconductive wires in particular.The novel thermoplastic polyimide is represented by general formula (1) corresponding to the chemical structure shown below; ##STR1## wherein, Ar.sub.1, Ar.sub.2, Ar.sub.4, and Ar.sub.6, respectively designate divalent organic radical, whereas Ar.sub.3 and Ar.sub.

Abstract: The present invention provides an improved grade of polyimide containing an organic phosphorus compound, a film composed thereof and a method of making the aforementioned film. According to the present invention, it is possible to obtain a polyimide film improved in mechanical strength.

Abstract: The present invention relates to a novel glycerol derivative and a process for preparing the same, and a process for preparing a triazole derivative.According to the present invention, an optical active 2-arylglycerol derivative which is a novel and useful as a synthetic intermediate of medicament can be provided and furthermore, (R)-2-(2,4-difluorophenyl)-3-(1H-1,2,4-triazole-1-yl)-propane-1,2-diol which is useful as an antifungal agent can be prepared.

Abstract: A curable resin composition is disclosed which is composed of (a) an oxyalkylene polymer containing at least one reactive silicon group per molecule and having a number average molecular weight of not less than 3000 and an Mw/Mn ratio of not higher than 1.6, (b) a copolymer having a molecular chain which comprises (A) an alkyl acrylate monomer unit and/or an alkyl methacrylate monomer unit each having 1 to 8 carbon atoms in the alkyl moiety thereof and (B) an alkyl acrylate monomer unit and/or an alkyl methacrylate monomer unit each having 10 or more carbon atoms wherein the total number of monomer units (A) and monomer units (B) constitutes more than 50% of the monomer units in the copolymer (b), and (c) a curing catalyst.