- Email: [email protected]
Bonded calcium carbide article and method for making same
with liquid, solvent-free resin, which can be solidified but still be heat curable, A photopolymerisation catalyst is included to initiate partial cure of the prepreg.
Bonded calcium carbide article and method for making same (Uniroyal Inc)BrPat I 509 033 (26 April 1978) Calcium carbide particles can be bonded together by various polymers - typical is a polyurethane with terminal isocyanate groups. The product maintains its shape and slowly erodes when placed into molten metals such as steel. The sulphur content is significantly reduced. Resin-impregnated fibrous laminates (Norsk Hydro AS, Norway) Br Pat 1
509 260 (4 May 1978) A laminate is produced which can be reasily bonded to a substrate without the need for sanding. Polysaccharide acts as a release agent separating different plies during hot pressing but also acts as a good key to water based adhesives. Polyolefm adhesive composition (Sumitomo Chemical Co Ltd) Br Pat 1 509 390 (4 May 1978) Composites of EVA copolymer with calcium chloride can be used as an thermofusible adhesive for bonding metals.
strength compared to a composition containing the same volume fraction of stearate coated filler.
Improvements in and relating to refractory f'dls (Resil Processes L t d ) B r P a t 1 510 313 (10 May 1978) The top layer of a laminate with good high temperature and surface properties consists of ceramic fibre (Triton Kaowool) reinforced ball clay with resin binder. The backing layer is a resin bound aggregate. The laminate has superior properties for lining metal ingot moulds. Carbon fibres (Japan Exlan Co Ltd)Br Pat i 510 355 (10 May 1978) Carbon fibres with a smooth surface are prepared from pan fibres also with a smooth surface. The properties of the composite strongly depend on the smoothness of the fibre. An oscilloscope method is described for determining surface roughness. Organo silane coupling agents (Owens-Coming Fiberglas Corp) Br Pat 1 501 801 (17May 1978) Organo silanes can be used as coupling agents for alkali resistant glass fibres intended for reinforcing cement.
(4May 1978) Branched polyphenylene filled with graphite powder can be compression moulded and the products can withstand 100% H3PO4 at 400°F with 0.9 V potential for 3 000 hours. Intended for use as an electrode in fuel cells.
Laminated container (Goodyear Tire and Rubber Co)Br Pat 1 510 860 (17May 1978) The laminate described is suitable for long term storage of lubricating oil at temperatures of 150-230°C. Layers of copolymer of vinylidene fluoride and hexafluoropropene (Viton B-50) containing MgO and carbon black and aramid woven fabric were backed off with glass-reinforced epoxy resin. Several layers were pressed together and the resin cured.
Inorganic filler and resin compositions filled therewith (Hiroshi Takahashi) Br Pat 1 510 23 7 (10 May 1978) An inorganic powder, eg CaCOa, can be coated with a fatty acid ester of pentaesythoitol. The product can be used to fill resins and thermoplastics giving better flow and processability. The composition has improved impact
Carbon fibres (Toray Industries Inc)Br Pat 1 511 007 (17May 1978) Homogenous fibres are produced from pan precursors. During oxidation the fibres are run over a heated pit at 285°C. Small contact times are required for good fibres. A plasma etching test is used to determine the number of flaws.
Moldable resin mixtures and composites formed therefrom (Standard Oil Co)BrPat I 509 879
COMPOSITES
. OCTOBER
1978
Method of making a glass-fibre reinforced cementitious composition (Owens-Coming Fiberglas Corporation) BrPat i 511 270(17May 1978) Alkali resistant glass fibres can be sized with water soluble organic polymers which enable the fibres to be processed but wet out when blended with aqueous cementitious type products. Non-ionic, cationic (eg polyethylene amine) and anionic (polyacrylic acid) polymers are used as sizes. The rate of dissolution and filamentization in the matrix can be varied by neutralizing some side groups of the polymer. Low profde unsaturated polyester resin composition (Sumitomo Chemical Company Ltd) BrPat I 511 796(24May 1978) Saturated polyesters of average molar mass of 6000 with terminal unsaturation can replace part of the unsaturated polyester in a styrenated resin. Whereas the shrinkage is reduced, the strength is maintained so that low profiling can be achieved without loss of properties. This is an improvement over nonreactive thermoplastic additives.
Method of manufacturing an object of cross-linked polymer and compositions for use in the method (ASEA Aktiebolag)BrPat 1 511 679 {24 May 19 78) An indicator for determining the degree of crosslinking of a peroxide cured polymer is described. The examples all relate to vulcanisation of various elastomers eg EPR and SBR. Methacrylate Syrup (Deutsche Gold-Und-Silber-Scheideanstalt Vormals Roessler, West Germany) BrPat 1 511 933 (24 May 1978) A new methacrylate syrup is described which is suitable for binding both silicate and organic glass fibres to form a laminate. The syrup consists of a prepolymer of eg octyl methacrylate and octyl acrylate dissolved in a mixture of monomers to give a specific viscosity. Structural materials (Formica International Ltd)Br Pat 1
512 084 (24 May 1978) A thermoset laminate is bonded to a cementitious substrate via a porous
289
Bonded calcium carbide article and method for making same (Uniroyal Inc)BrPat I 509 033 (26 April 1978) Calcium carbide particles can be bonded together by various polymers - typical is a polyurethane with terminal isocyanate groups. The product maintains its shape and slowly erodes when placed into molten metals such as steel. The sulphur content is significantly reduced. Resin-impregnated fibrous laminates (Norsk Hydro AS, Norway) Br Pat 1
509 260 (4 May 1978) A laminate is produced which can be reasily bonded to a substrate without the need for sanding. Polysaccharide acts as a release agent separating different plies during hot pressing but also acts as a good key to water based adhesives. Polyolefm adhesive composition (Sumitomo Chemical Co Ltd) Br Pat 1 509 390 (4 May 1978) Composites of EVA copolymer with calcium chloride can be used as an thermofusible adhesive for bonding metals.
strength compared to a composition containing the same volume fraction of stearate coated filler.
Improvements in and relating to refractory f'dls (Resil Processes L t d ) B r P a t 1 510 313 (10 May 1978) The top layer of a laminate with good high temperature and surface properties consists of ceramic fibre (Triton Kaowool) reinforced ball clay with resin binder. The backing layer is a resin bound aggregate. The laminate has superior properties for lining metal ingot moulds. Carbon fibres (Japan Exlan Co Ltd)Br Pat i 510 355 (10 May 1978) Carbon fibres with a smooth surface are prepared from pan fibres also with a smooth surface. The properties of the composite strongly depend on the smoothness of the fibre. An oscilloscope method is described for determining surface roughness. Organo silane coupling agents (Owens-Coming Fiberglas Corp) Br Pat 1 501 801 (17May 1978) Organo silanes can be used as coupling agents for alkali resistant glass fibres intended for reinforcing cement.
(4May 1978) Branched polyphenylene filled with graphite powder can be compression moulded and the products can withstand 100% H3PO4 at 400°F with 0.9 V potential for 3 000 hours. Intended for use as an electrode in fuel cells.
Laminated container (Goodyear Tire and Rubber Co)Br Pat 1 510 860 (17May 1978) The laminate described is suitable for long term storage of lubricating oil at temperatures of 150-230°C. Layers of copolymer of vinylidene fluoride and hexafluoropropene (Viton B-50) containing MgO and carbon black and aramid woven fabric were backed off with glass-reinforced epoxy resin. Several layers were pressed together and the resin cured.
Inorganic filler and resin compositions filled therewith (Hiroshi Takahashi) Br Pat 1 510 23 7 (10 May 1978) An inorganic powder, eg CaCOa, can be coated with a fatty acid ester of pentaesythoitol. The product can be used to fill resins and thermoplastics giving better flow and processability. The composition has improved impact
Carbon fibres (Toray Industries Inc)Br Pat 1 511 007 (17May 1978) Homogenous fibres are produced from pan precursors. During oxidation the fibres are run over a heated pit at 285°C. Small contact times are required for good fibres. A plasma etching test is used to determine the number of flaws.
Moldable resin mixtures and composites formed therefrom (Standard Oil Co)BrPat I 509 879
COMPOSITES
. OCTOBER
1978
Method of making a glass-fibre reinforced cementitious composition (Owens-Coming Fiberglas Corporation) BrPat i 511 270(17May 1978) Alkali resistant glass fibres can be sized with water soluble organic polymers which enable the fibres to be processed but wet out when blended with aqueous cementitious type products. Non-ionic, cationic (eg polyethylene amine) and anionic (polyacrylic acid) polymers are used as sizes. The rate of dissolution and filamentization in the matrix can be varied by neutralizing some side groups of the polymer. Low profde unsaturated polyester resin composition (Sumitomo Chemical Company Ltd) BrPat I 511 796(24May 1978) Saturated polyesters of average molar mass of 6000 with terminal unsaturation can replace part of the unsaturated polyester in a styrenated resin. Whereas the shrinkage is reduced, the strength is maintained so that low profiling can be achieved without loss of properties. This is an improvement over nonreactive thermoplastic additives.
Method of manufacturing an object of cross-linked polymer and compositions for use in the method (ASEA Aktiebolag)BrPat 1 511 679 {24 May 19 78) An indicator for determining the degree of crosslinking of a peroxide cured polymer is described. The examples all relate to vulcanisation of various elastomers eg EPR and SBR. Methacrylate Syrup (Deutsche Gold-Und-Silber-Scheideanstalt Vormals Roessler, West Germany) BrPat 1 511 933 (24 May 1978) A new methacrylate syrup is described which is suitable for binding both silicate and organic glass fibres to form a laminate. The syrup consists of a prepolymer of eg octyl methacrylate and octyl acrylate dissolved in a mixture of monomers to give a specific viscosity. Structural materials (Formica International Ltd)Br Pat 1
512 084 (24 May 1978) A thermoset laminate is bonded to a cementitious substrate via a porous
289