Entries |
Document | Title | Date |
20080242791 | Methods of Producing Vinyl Aromatic Polymers Using (Meth)Acrylic Macroinitiators - The present invention relates to the use of poly acrylic and/or methacrylic macroinitiators in the free radical addition reaction of vinyl aromatic monomers to improve the properties of the resulting copolymer and/or composite. More particularly, the present invention relates to the production of poly acrylic and/or poly methacrylic macroinitiators having nitroxyl end groups. Using such macroinitiators in the free radical addition reaction of vinyl aromatics such as polystyrene compatibilizes the acrylic monomer in the vinyl aromatic matrix thereby improving the properties of the resulting polymer. | 10-02-2008 |
20080249227 | Resin Composition, Product Molded from the Resin Composition, and Preparation Method for the Resin Composition - A resin composition comprising 10 to 99 mass % of a biodegradable aliphatic polyester resin (X), and 90 to 1 mass % of a polyolefin resin (Y). The resin composition preferably has a total light transmittance of not higher than 60% as measured with respect to a 3-mm thick test piece in conformity with JIS K7105, or the polyolefin resin (Y) preferably forms a continuous phase in the resin composition. | 10-09-2008 |
20080275175 | Modified Olefin Polymer Composition and Olefin Polymer Composition Containing the Same - To provide a modified olefin polymer composition comprising a phyllosilicate dispersed in a modified olefin polymer in a sufficiently delaminated state, and an olefin polymer composition comprising a phyllosilicate dispersed in an olefin polymer in a sufficiently delaminated state obtained by diluting the modified olefin polymer composition as a masterbatch diluted with an olefin polymer. | 11-06-2008 |
20090215952 | Rubber compositions comprising two different coupling agents and also inorganic fillers - Elastomer isoprene rubber compositions contain an effective amount of a polyfunctional coupling system (A) as an inorganic-elastomer filler coupling agent, and (B) at least one elastomer of natural or synthetic rubber; (C) an inorganic filler as reinforcing filler; (D) other conventional constituents or additives comprising one or more vulcanizing agent(s), the polyfunctional coupling system being of the constituents (A1) and (A2): (A1) is at least one coupling agent selected from among the functionalized organosilicon compounds of formula (I): [(G | 08-27-2009 |
20100016494 | LOW TEMPERATURE, CATIONICALLY CURABLE COMPOSITIONS WITH IMPROVED CURE SPEED AND TOUGHNESS - The present invention relates to low temperature, cationically curable compositions with improved cure speed and toughness. | 01-21-2010 |
20100029830 | GLASS COMPOSITIONS - Disclosed is a glass composition which can be suitably used as a glass filler to be blended into a polycarbonate resin. This glass composition contains, in mass %, 50≦SiO | 02-04-2010 |
20100160528 | GLASS COMPOSITION - Disclosed is a glass composition having a stable quality, which can be easily obtained. This glass composition can be used as a glass filler to be blended into a polycarbonate resin, and enables to reduce the load imposed on a glass manufacturing apparatus. Specifically, this glass composition contains, in mass %, 50≦SiO | 06-24-2010 |
20100179269 | PYROGENICALLY PREPARED SILICON DIOXIDE COMPACTED TO GIVE CRUSTS - Pyrogenically prepared silicon dioxide is compacted to give crusts, in that it is subject to preliminary de-aeration, and is compacted to give crusts, and the crusts are broken and, if appropriate, classified. The tamped bulk density (to DIN EN ISO 787-11) of the silicon dioxide compacted to give crusts is from 185 to 700 g/l. It can be used as filler in rubber mixtures. | 07-15-2010 |
20100292386 | MICROPOROUS PRECIPITATED SILICA - Described herein is microporous precipitated silica having the following physico-chemical parameters: a CTAB surface area of 50 to 300 square meters/gram, a BET/CTAB ratio of ≧1.3, and a relative breadth γ of pore size distribution of ≦3.5. The precipitated silica can also have a Sears number of from 10 to 28 and a Sears number/CTAB ratio of ≦0.16. Also described herein are vulcanizable and vulcanized elastomer compositions, e.g., tires, containing the microporous precipitated silica. | 11-18-2010 |
20100317788 | Film Forming Composition Comprising Modified Nanoparticles and Modified Nanoparticles for Use in Film Forming Compositions - The present invention relates to a film forming composition comprising a resin and modified nanoparticles comprising nanoparticles and adsorbed thereon a segmented copolymer, preferably a segmented blockcopolymer, comprising an adsorbing segment and a hydrophobic surface active segment, wherein the adsorbing segment has one or more functional groups that adsorb on the nanoparticles and wherein the hydrophobic segment is more hydrophobic than the resin providing surface migration of the nanoparticles. The invention also relates to novel modified particles and the use of the specified segmented copolymer of specified modified particles in a film forming composition for imparting thereto improved surface properties such as scratch resistance. | 12-16-2010 |
20110077343 | RUBBER COMPOSITION FOR TIRE BASE RUBBER COMPOSITION, AND PNEUMATIC TIRE MADE USING SAID RUBBER COMPOSITION - Provided are: a rubber composition for a tire base rubber, including: (A) a rubber component including an amine-based functional group modified polybutadiene rubber; and (B) silica having a cetyltrimethylammonium bromide (CTAB) adsorption specific surface area of 50 to 120 (m | 03-31-2011 |
20110263777 | POLYAMIDE RESIN COMPOSITION REINFORCED WITH GLASS FIBER - There is provided a polyamide resin composition reinforced with glass fiber produced by the melt kneading of a mixture where 60 to 80 parts by weight of glass fiber bundles (B) comprising a glass fiber having a flat cross section whose flatness degree is 1.5 to 8 and having an ignition loss at 625° C. for 0.5 hour of not more than 0.8% by weight are added to 40 to 20 parts by weight of polyamide (A), characterized in that, during the above melt kneading, a polyamide-reactive silane coupling agent (C) is added to the above mixture in a rate of 0.1 to 1.0% by weight of the above glass fiber bundles (B). The polyamide resin composition of the present invention has high bending strength, bending elastic modulus and Charpy impact strength (at 23° C. and −40° C.) by a specific fracture mode which have been never achieved before, and it is excellent in productivity. | 10-27-2011 |
20120041127 | NITRILE RUBBER COMPOSITION, CROSS-LINKABLE NITRILE RUBBER COMPOSITION AND CROSS-LINKED RUBBER - Disclosed herein are a nitrile rubber composition comprising a nitrile rubber (a) including an α,β-ethylenically unsaturated nitrile monomer unit and having iodine value of 100 or less, an α,β-ethylenically unsaturated carboxylic acid metallic salt (b), and silane-treated fumed silica and/or calcinated wet silica (c); a cross-linkable nitrile rubber composition comprising the above nitrile rubber composition and a crosslinking agent (d); and a cross-linked rubber obtained by crosslinking the cross-linkable nitrile rubber composition. The present invention can provide a nitrile rubber composition and a cross-linkable nitrile rubber composition, capable of giving a highly-saturated cross-linked nitrile rubber having high tensile stress and excellent heat resistance, and a cross-linked rubber thereof. | 02-16-2012 |
20120322933 | HIGH STRENGTH GLASS FIBERS WITH CONTROLLED REFRACTIVE INDEX, COMPOSITION FOR MAKING SUCH FIBERS AND COMPOSITE MATERIALS FORMED THEREFROM - Glass fibers are presented having a composition of about 48-54 weight percent SiO | 12-20-2012 |
20130217822 | Composition for high performance glass, high performance glass fibers and articles therefrom - Glass batch compositions for the formation of high-modulus, and high-strength glass fibers as well as fibers suitable for use as textile and reinforcements are disclosed. Fibers formed of the composition are especially suitable for use in high-strength, low-weight applications such as windmill blades and high strength and modulus applications where strength and stiffness are required in the composite. The glass composition is up to about 70.5 weight % SiO | 08-22-2013 |
20140018490 | RUBBER COMPOSITION AND PNEUMATIC TIRE - The invention provides a rubber composition that can enhance fuel economy, wet-grip performance, abrasion resistance, and handling stability in a balanced manner, and a pneumatic tire using this composition. The invention relates to a rubber composition containing a rubber component, silica ( | 01-16-2014 |
20140051791 | RUBBER COMPOSITION - The present invention provides a rubber composition containing: (A) a rubber component containing 10% by mass or more of at least one kind of rubber selected from diene rubber synthesized by emulsion polymerization and natural rubber and 90% by mass or less of another kind of diene rubber; (B) silica having a n-hexadecyltrimethylammonium bromide (CTAB) adsorption specific surface area of not less than 180 m | 02-20-2014 |
20140142235 | RUBBER COMPOSITION - The present invention provides a rubber composition containing: (A) a rubber component containing from 90 to 100% by mass of at least one kind of diene rubber synthesized by solution polymerization and from 0 to 10% by mass of another kind of diene rubber; (B) silica having a n-hexadecyltrimethylammonium bromide (CTAB) adsorption specific surface area of 140 m | 05-22-2014 |
20140213713 | TIRE RUBBER COMPOSITION AND PNEUMATIC TIRE - Provided are: a tire rubber composition improving fuel economy and abrasion resistance while maintaining good wet-grip performance or improving it; and a pneumatic tire including the same. The composition contains: a rubber component including a diene polymer (1); silica; and a diene polymer (2), the polymers (1) and (2) being modified diene polymers obtained by reacting components (A)-(B), the polymer (1) having a Mn of 110000-1500000, the polymer (2) having a Mn of 1000-100000, the amount of polymer (2) being 2-25 parts by mass per 100 parts by mass of the rubber component, wherein (A): an active alkali metal-terminated conjugated diene polymer obtained by polymerizing a conjugated diene monomer alone or with an aromatic vinyl monomer, in the presence of a component (C); (B): a modifying agent containing a functional group; (C): a chemical species obtained by reacting an organic alkali metal compound with a compound of formula (1): | 07-31-2014 |
20140213714 | RUBBER COMPOSITION AND PNEUMATIC TIRE - Provided are: a rubber composition achieving balanced improvement in fuel economy, abrasion resistance, and processability, and a pneumatic tire including the composition. The rubber composition includes: a conjugated diene polymer; silica; and a silane coupling agent, the polymer being obtained by polymerizing a monomer component including a conjugated diene compound and a silicon-containing vinyl compound in the presence of a polymerization initiator of formula (I): | 07-31-2014 |
20150329704 | RUBBER COMPOSITION AND TIRE - An object of the present invention is to provide a rubber composition which can prevent mold contamination while maintaining abrasion resistance and wet grip performance, and a tire which has a tread composed of the rubber composition. The rubber composition of the present invention comprises a predetermined amount of at least one selected from the group consisting of stearic acid, a metal salt of saturated fatty acid and a specific mold release agent, a specific resin, silica and a silane coupling agent, based on a diene rubber component, where an amount of an unreacted silane coupling agent in the rubber composition before vulcanization is within a predetermined range. | 11-19-2015 |
20160122510 | Filled polymer compositions for mobile electronic devices - The present invention relates to a polymer composition (C) comprising at least 20 wt % of at least one polymer, and at least 20 wt % of glass fibers having a non-circular cross section and an elastic modulus of at least 76 GPa. The polymer composition (C) features an outstanding balance of mechanical and processing performances which make them very well suited for the manufacture of thin parts such as parts of mobile electronic devices. | 05-05-2016 |