203 results about "Decalin" patented technology

A polypropylene resin composition, which is light weighing, has very high values for the stiffness and heat resistance and is superior in the scratch-proof property with better moldability upon molding and which can be injection-molded into formed articles without occurrence of cracking, comprising 5-25% by weight of a higher molecular weight polypropylene (A) having an intrinsic viscosity [eta], determined in decalin at 135° C., in the range from 6 to 11 dl/g and 95-75% by weight of a lower molecular weight polypropylene (B) having an intrinsic viscosity [eta], determined in decalin at 135° C., in the range from 0.6 to 1.6 dl/g, wherein the said resin composition has the following charactristic features <<1>> and <<2>>, namely,<<1>> an isotactic pentad fraction (mmmm-fraction), determined by 13C-NMR, of at least 96.5% and<<2>> a molecular weight distribution value expressed by Mw/Mn (weight-average molecular weight/number-average molecular weight), determined by gel permeation chromatography (GPC), of at least 8.

The invention provides a propylene random block copolymer (A) that has a melt flow rate from 0.1 to 100 g/10 min and a melting point from 100 to 155° C. and includes 90 to 60% by weight of a portion insoluble (D_insol) in n-decane at room temperature and 10 to 40% by weight of a portion soluble (D_sol) in n-decane at room temperature, wherein the D_insol satisfies the following requirements (1) through (3) and the D_sol satisfies the following requirements (4) through (6). The invention further provides molded articles such as sheets, films, injection molded articles, hollow molded articles, injection blow molded articles and fibers, which are formed of the propylene random block copolymer (A) or a propylene resin composition containing the propylene random block copolymer (A). (1) The molecular weight distribution (Mw/Mn) obtained by GPC of the D_insol is from 1.0 to 3.5, (2) the content of skeletons derived from ethylene in the D_insol is from 0.5 to 13% by mole, (3) the total amount of 2,1- and 1,3-propylene units in the D_insol is 0.2% by mole or less, (4) the molecular weight distribution (Mw/Mn) obtained by GPC of the D_sol is from 1.0 to 3.5, (5) the intrinsic viscosity [η] in decalin at 135° C. of the D_sol is from 1.5 to 4 dl/g and (6) the content of skeletons derived from ethylene in the D_sol is from 15 to 35% by mole.

A thermoplastic elastomer composition prepared by dynamically treating with heat (a) an oil-extended ethylene-based copolymer rubber which comprises an ethylene-based copolymer rubber with an intrisic viscosity [ eta ] in the range from 4.3 to 6.8 dl/g when measured at 135 DEG C. in decalin and a mineral oil softening agent and (b) an olefin-based resin, in the presence of a crosslinking agent. The composition exhibits well-balanced and excellent elasticity recoverability and moldability, and can produce molded articles with superior appearance.

Polypropylene-Polyethylene blends comprising A) 75 to 90wt% of a blend of A-l) polypropylene and A-2) polyethylene and B) 10 to 25wt% of a compatibilizer being a heterophasic polyolefin composition comprising B-l) a polypropylene with an MFR2 between 1.0 and 300 g/10 min (according to ISO 1133 at 230 DEG C at a load of 2.16 kg) and B-2) a copolymer of ethylene and propylene or C4 to C10 alpha olefin with a Tg (measured with dynamic-mechanical thermal analysis, DMTA, according to ISO 6721-7) of below -25DEG C and an intrinsic viscosity (measured in decalin according to DIN ISO 1628/1 at 135DEG C) of at least 3.0 dl/g, whereby the blend has simultaneously increased Charpy Notched Impact Strength (according to ISO 179-leA, measured at 23DEG C), Flexural Modulus (according to ISO 178) as well as heat deflection resistance (determined with DMTA according to ISO 6721-7).

Heterophasic polypropylene composition comprising (A) 45 to 70 wt% of a propylene homo- or copolymer matrix with an MFR2 in accordance with ISO 1133 (230 DEG C, 2.16 kg load) of => 80 g/10 min and (B) 25 to 40 wt% of an elastomeric propylene-ethylene copolymer, having an intrinsic viscosity IV (ISO 1628, with decalin as solvent) of => 3.3 dl/g and an ethylene content of 20 to 50 wt%, (C) 0-15 wt% of an elastomeric ethylene/alpha-olefin random copolymer (D) 3 - 25 parts per weight of inorganic filler, the heterophasic polypropylene compositions having a total MFR2 (230 DEG C/2.16 kg) in accordance with ISO 1133 of => 5 g/10 min, a Charpy notched impact strength according to ISO 179/1eA at +23 DEG C of => 15.0 kJ/m2, preferably => 25.0 kJ/m2, a minimum value for the Charpy notched impact strength according to ISO 179/1eA at -200C of => 7.0 kJ/m2, preferably => 10.0 kJ/m2 and a tensile modulus according to ISO 527-3 of =>1200 MPa; their preparation and use for producing injection moulded articles being free of flow marks.

Disclosed are paraffin inhibitors prepared by admixing a polymer having the characteristic of inhibiting paraffin crystalline growth in formation fluid from oil and gas wells with a first solvent selected from the weak to moderate wax solvents and a second solvent selected from the strong wax solvents. Exemplary weak to moderate wax solvents include benzene, toluene, xylene, ethyl benzene, propyl benzene, trimethyl benzene and mixtures thereof. Exemplary strong wax solvents include cyclopentane, cyclohexane, carbon disulfide, decalin and mixtures thereof. The solvent system disclosed has desirably better solubility with the polymers, even at reduced temperatures, than either solvent alone. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b)

The invention discloses a preparation method for exo-dicyclopentadiene from bridge-type dicyclopentadiene or cyclopentadiene, belonging to the exo-dicyclopentadiene preparation technology. The method includes preparing a solution composed of bridge-type dicyclopentadiene or cyclopentadiene, and benzene, or toluene, or benzyl alcohol, or decalin, or cyclohexane, or heptane, or hexane at a certain quality ratio, adding p-tert-butylcatechol, or 2, 5-di-tert-butylhydroquinone, or 2,6-di-tertbutyl-4-methylphenol, or hydroquinone, or 2-methyl-1,4-dihydroxybenzene, or o-hydroquinone inhibitor and carrying out reaction at a certain temperature and pressure, distilling and separating to obtain the exo-dicyclopentadiene. The invention has the advantages of one-step synthesis without catalyst, mild reaction conditions and high yield, and is suitable for industrial production.

An organic semiconductor composition comprises: an organic semiconductor material having a structural unit including at least one thiophene ring as a repeating unit; and an organic solvent including cis-decalin.

The laminate of the invention comprises a sliding member of a resin composition and a Substrate layer of a thermoplastic olefin elastomer (A), and is obtained by co-extruding: the resin composition which is obtained by melt kneading a thermoplastic olefin elastomer (A), an ultra-high-molecular weight polyolefin (except a powder thereof having a particle diameter of 1 to 100 mum) having an intrinsic viscosity, as measured in a decalin solvent at 135° C., of 1 to 40 dl/g, an inorganic or organic filler powder, and optionally, a polyolefin resin, an organopolysiloxane, a fatty acid amide and a fluororubber in a twin-screw extruder, and the thermoplastic olefin elastomer (A). The laminate has excellent sliding properties with window glass and excellent abrasion resistance. Moreover, the laminate can be produced by a simple process because it requires no adhesive, and the laminate has great bonding strength between the substrate layer and the sliding member layer.

An object of the present invention is to provide a material used for producing a sheet for sealing a solar cell which is excellent in mechanical strength, solar cell sealing property and transparency if the material is not cross-linked.

The thermoplastic resin composition of the present invention for sealing a solar cell is characterized by comprising:

• (A) 0 to 70 parts by weight of a propylene-based polymer having a melting point of 100° C. or higher and
• (B) 30 to 100 parts by weight of a propylene-based copolymer satisfying the following requisite (b);
• (b): MFR (230° C., load: 2.16 kg) falls in a range of 0.01 to 100 g/10 minutes, and at least one of the following requisites (b-1) and (b-2) is satisfied;
• (b-1): an rr fraction is 60% or more and
• (b-2): a structural unit derived from propylene is contained in an amount of 55 to 90 mole %, and a structural unit derived from α-olefin having 2 to 20 carbon atoms (excluding propylene) is contained in an amount of 10 to 45 mole %; and an intrinsic viscosity [η] (dL/g) measured in decalin at 135° C. and MFR described above satisfy a specific relational equation.

Disclosed herein is an olefin copolymer shrink film comprising an alpha-olefin/aromatic vinyl compound random copolymer. This alpha-olefin/aromatic vinyl compound random copolymer comprises 99.9 to 58 mol % of structural units derived from ethylene, 0 to 30 mol % of structural units derived from an alpha-olefin having 3 to 20 carbon atoms (provided that the total of the structural units derived from ethylene and the structural units derived from an alpha-olefin having 3 to 20 carbon atoms ranges from 99.9 to 88 mol %), and 0.1 to 12 mol % of structural units derived from an aromatic vinyl compound. The alpha-olefin/aromatic vinyl compound random copolymer has an intrinsic viscosity [eta], as measured in decalin at 135° C., of 0.1 to 10 dl/g and has a melting point, as measured by a differential scanning calorimeter, of 60 to 125° C. The olefin copolymer shrink film is oriented in at least one direction. The olefin copolymer shrink film has excellent low-temperature shrinkability and transparency.

The present invention relates to a laminate comprising an olefinic thermoplastic elastomer which comprises:(a) a substratum layer comprising an olefinic thermoplastic elastomer composition (A) having the following characteristics {circle around (1 to {circle around (3:{circle around (1 wherein X denotes the JIS A-hardness value (a dimensionless value) of the olefinic thermoplastic elastomer composition determined according to the prescription of JIS K6301 and Y represents the compression set value (expressed by %) of the olefinic thermoplastic elastomer composition determined according to the prescription of JIS K6301 under a condition of 70° C. and 22 hours,{circle around (2 a tensile strength value in the range from 5 to 30 MPa determined according to the prescription of JIS K6301 and{circle around (3 an elongation set value of 18% or less determined according to the prescription of JIS K6301, and(b) a surface skin layer comprising an ultra high molecular weight polyolefin composition (B) having an intrinsic viscosity [eta] measured in decalin at 135° C. in the range from 3.5 to 8.3 dl/g; and a constructional gasket comprising the olefinic thermoplastic elastomer composition (A).

The present invention is a polyolefin polymer containing vinyl groups at both ends thereof, and a composition and a molded product containing the polymer, wherein the polymer contains a constitutional unit derived from at least one selected from the group consisting of ethylene (a), an α-olefin (b) having 3 to 20 carbon atoms, and a cyclic olefin (c), and

• (1) a ratio of terminal vinylation is 70% or more relative to all of both ends of molecular chains, and
• (2) an intrinsic viscosity [η] is in the range of 0.01 to 10 dl/g as measured in a decalin solution at 135° C.

The polymer of the present invention may be molded by a LIM molding, an injection molding, a transfer molding, a compression molding, and the like, and is excellent in acid resistance, gas permeation resistance, hydrolysis resistance, and dynamic fatigue resistance. From the polymer, a thermoplastic resin composition and a crosslinkable resin composition, and a crosslinked composition having excellent mechanical characteristics are obtained.

The invention relates to a method for synthesizing decalin, which comprises the following specific steps: naphthalene is dissolved in an organic solvent to be prepared into a reaction raw material, then a prepared catalyst Pd/gamma-Al2O3 is arranged in a reaction tube of a fixed bed reactor, the upper part and the lower part of the reaction tube are filled with quartz sand, the raw material enters the fixed bed reactor through a high-pressure infusion pump for reaction so as to obtain the decalin, wherein the reaction temperature is controlled to be 100-280 DEG C, the reaction pressure is 1.5-4.0Mpa, the liquid hour mass space velocity is 0.5-2.0h-1, and the hydrogen oil ratio is 80-1000. The maximum conversion rate of the naphthalene reaches 99.92%, and the yield of the decalin reaches 99.36%.

A continuous flow process has been discovered for the highly selective isopropylation of biphenyl to 4,4′-diisopropylbiphenyl. Thus biphenyl and propene in decalin are passed through a solid zeolite catalyst bed contained in a flow reactor at moderate temperature (220° C.) and pressure (10-30 atm) together with a continuous stream of nitrogen. Surprisingly, catalyst performance is improved by the continuous introduction of the nitrogen into the reactor along with the reactants and solvent. Thus, improved performance as measured by higher percent conversion to products, higher yields of diisopropylated products and lower yields of undesired triisopropylated products are observed when a diluent gas such as nitrogen is employed. The alkylation process is selective for 4,4′-diisopropylbiphenyl using a zeolite catalyst, preferably a dealuminated mordenite in which the molar ratio of SiO₂ to Al₂O₃ moieties is in a range between about 10 to 1 and about 500 to 1.

The polyamide resin composition of the invention comprises 100 parts by weight of a polyamide resin (A) and from 5-200 parts by weight of a graft-modified ethylene/ alpha -olefin random copolymer (B) which is obtained by graft-modifying an ethylene/ alpha -olefin random copolymer of ethylene and an alpha -olefin of 6 to 20 carbon atoms with an unsaturated carboxylic acid or its derivative and has a graft quantity of 0.01 to 10% by weight. The graft-modified ethylene/ alpha -olefin random copolymer (B) is a graft-modified product of an ethylene/ alpha -olefin random copolymer having an alpha -olefin content of from 6 to 25% by mole and an intrinsic viscosity of from 0.5 to 5.0 dl/g measured in decalin at 135 DEG C.

Provided are a highly-pure, terminal-unsaturated olefin polymer which is produced through homopolymerization or copolymerization of one or more α-olefins having from 3 to 28 carbon atoms, or copolymerization of at least one α-olefin having from 3 to 28 carbon atoms and ethylene, in the presence of a catalyst, and which satisfies the following (1) to (4); and a method of efficiently producing the olefin polymer having a high degree of terminal unsaturation degree and containing little catalyst residue.

• • (1) The content of the transition metal derived from the catalyst is at most 10 ppm by mass, the content of aluminium is at most 300 ppm by mass, and the content of boron is at most 10 ppm by mass;
  • (2) The polymer has from 0.5 to 1.0 vinylidene group/molecule as the terminal unsaturated group;
  • (3) The polymer has an intrinsic viscosity [η], as measured in decalin at 135° C., of from 0.01 to 2.5 dl/g;
  • (4) The polymer has a molecular weight distribution (Mw/Mn) of at most 4.

A synthetic fuel formula using a blend of High Density Synthetic (HDS) (e.g. Decalin and Tetralin), and Low Density Synthetic (LDS) (e.g. Synthetic Paraffinic Kerosene—SPK) is disclosed. This HDS and LDS blend has been shown to be useful as a jet, rocket and diesel fuel of standard density, and under low temperature conditions. The inventions described herein relate to 100% synthetic hydrocarbon fuels derived from various carbonaceous materials such as, but not limited to, biomass, municipal waste, natural gas, and coal. This 100% synthetic fuel can be universally used for both jet and diesel fuels. It meets Joint Battlefield Use Fuel of the Future (J-BUFF), or Single Battlefield Fuel (SBF) strategic requirements. The commercial advantage of the present invention is that it can be prepared from commercial available fuel stocks or co-processed using currently available chemical processes.

A molded composite comprising a first molded part 11 and a second molded part 12 which is bonded to the surface and/or a cross-sectional surface of the first molded part 11 is disclosed. The first molded part 11 is obtained by extrusion foam molding of an olefin thermoplastic elastomer composition, comprising (A) an ethylene-α-olefin copolymer rubber having an intrinsic viscosity [η] of 3.5 to 6.8 dl/g as measured at 135° C. in a decalin solvent, (B) a polyolefin resin, and (C) a mineral oil-based softener in a predetermined proportion and obtained by dynamically heat-treating a mixture of at least (A) the ethylene-α-olefin copolymer rubber and (B) the polyolefin resin in the presence of a cross-linking agent, at an expansion ratio of 1.2 times or more and the second molded part 12 is obtained by injection molding of the olefin thermoplastic elastomer composition and/or another thermoplastic elastomer composition and bonded to the surface and/or a cross-sectional surface of the first molded part 11.