摘要:
The present invention provides a process for preparing an interply-hybridized laminated material which comprises impregnating carbon fiber and inorganic fiber composed of Si, Ti or Zr, C and O with thermosetting resin to form respective prepregs and laminating the prepregs, wherein (i) the ratio of the tensile modulus of said carbon fiber to that of said inorganic fiber is 0.6/1 to 1.4/1, or (ii) the lamination structure is symmetrical along the lamination thickness with regard to the central planar area, or (iii) one of the outermost two layers is a carbon fiber-containing prepreg and the other is an inorganic fiber-containing prepreg.
摘要:
A dye-transfer-type thermal printing sheet is disclosed which comprises a substrate and a colored layer disposed on the substrate, the colored layer comprising wax and one or more fatty acid amides. The dye-transfer-type thermal printing sheet has a high recording density when an image is recorded on an image-receiving sheet, and may readily be peeled off the image-receiving sheet once recording is complete. Its properties are largely unaffected by transport and storage.
摘要:
A method of producing a polymer article having a metallized surface, which comprises dissolving a polymer and a metal salt in a common solvent, forming a polymer article containing the metal salt dispersed therein from the solution, and then treating the article with a reducing agent.
摘要:
A process is disclosed for producing an epoxy resin comprising an active hydrogen compound having at least three active hydrogen atoms capable of reacting with an epoxy group in its molecule, or a modified oligomer based on butadiene or isoprene which has on average at least 1.5 equivalents of active hydrogen capable of reacting with an epoxy group in its molecule. A process for producing epoxy resin modified with a bisphenol and a compound having active hydrogen or acid anhydride groups capable of reacting with an epoxy group is also disclosed. A toner comprising the epoxy resin as a binder is useful in electrostatography.
摘要:
A process for the purification of N-cyano-N′-methyl-N˝-[2-{(5-methyl-1H-imidazol-4-yl)methylthio}ethyl)guanidine, which comprises bringing a crude product of N-cyano-N′-methyl-N˝-[2-{(5-methyl-1H-imidazol-4-yl)methylthio}ethyl]guanidine into contact with activated carbon in water in the presence of an organic acid.
摘要:
A glass fiber reinforced polypropylene-polyamide resin composition which comprises:
(a) a propylene-ethylene block copolymer of an ethylene content of 5-30 mole % and of a melt flow rate of not less than 1.5 g/10 minutes in amounts of 25-65 % by weight; and (b) a polyamide in amounts of 75-35 % by weight; the propylene-ethylene block copolymer and the polyamide amounting to 100 % weight; and (c) glass fibers in amounts of 10-100 parts by weight In relation to 100 parts by weight of the total of the propylene-ethylene block copolymer and the polyamide; (d) a grafted polypropylene which has an unsaturated carboxylic acid or its derivatives grafted thereonto in amounts of 0.5-5 parts by weight in relation to 100 parts by weight of the total of the propylene-ethylene block copolymer and the polyamide; and (e) an organic peroxide in amounts of 0.02-0.5 % by weight based on the propylene-ethylene block copolymer.
摘要:
Hot melt adhesive with long open time good bonding to cold metals are made of blends of a maleic anhydride modified copolymer of butene-1 and ethylene, an aliphatic substantially non-polar tackifier resin, an antioxidant and, optionally, one or more of a microcrystalline wax, a block copolymer and atactic polypropylene.
摘要:
A process for producing a cycloolefin random copolymer, which comprises
(1) copolymerizing (a) ethylene or both ethylene and an alpha-olefin having at least 3 carbon atoms with (b) an cycloolefin such as octahydronaphthalenes and bicyclo[2,2,1]hept-2-ene in the presence of (c) a catalyst formed from a soluble vanadium compound and an organoaluminum compound at least one of which has halogen, in (d) a liquid phase composed of a hydrocarbon medium to form a solution of a cycloolefin random copolymer, and (2) contacting the resulting copolymer solution with (e) an adsorbent containing a metal cation.
摘要:
A heat storage mixture free from explosive release of heat which comprises 100 parts by weight of sodium acetate trihydrate, 0.1 to 10 parts by weight of xanthan gum and 5 to 10 parts by weight of excess water.
摘要:
There is provided a liquid oxidatively modified ethylenic random copolymer, which is an oxidatively modified product of a liquid ethylenic random coplymer comprising 20 to 80 mol% of ethylene and 80 to 20 mol% of α-olefin, and has (i) a number average molecular weight ( M n) in the range of from 200 to 10,000, (ii) a molecular weight distribution ( M w/ M n) given as weight average molecular weight ( M w) divided by number average molecular weight ( M n) in the range of up to 4, and (iii) an oxygen content of from 0.1 to 20% by weight, an acid value of from 0.1 to 50, and a saponification value of from 0.1 to 100. It is prepared by contacting a corresponding ethylenic random copolymer with oxygen-containing gas at 100-250°C.