摘要:
This disclosure aims to provide a tire having excellent braking performance on dry road surface and on wet road surface, and having excellent steering stability. This disclosure is a tire comprising a tread 10 formed by using a rubber composition of which a tan ´ at 0°C is 0.25 to 0.55, a difference between a tan ´ at 30°C and a tan ´ at 60°C is -0.02 to 0.07, and a dynamic storage modulus at a dynamic strain of 1% and 0°C is 4 MPa to 20 MPa, wherein: the tread 10 has circumferential grooves 20 extending in a tire circumferential direction C; a negative ratio in a footprint is 15% to 25%; a negative ratio derived from the circumferential grooves 20 is 8% to 14%; and a negative ratio derived from grooves other than the circumferential grooves 20 is 7% to 11%.
摘要:
Most processes currently being proposed and/or used for the production of lignin from kraft or soda black liquors are capable of producing two main types of lignin: high residual content (HRC) lignin and low residual content (LRC) lignin. Surprisingly, it was discovered that HRC lignin, is a suitable ingredient in alkaline adhesives, particularly wood adhesives of the phenolic type (e.g. resole resins). This biomaterial is environmentally green and remarkably low cost, which makes it an industrially viable material to be used as a novel and major ingredient in phenolic adhesives for the manufacture of exterior grade plywood, laminated veneer lumber, oriented strand board (OSB) and other wood products—this was successfully demonstrated in a number of laboratory experiments as well as several different mill trials. The composition, preparation and application of such wood adhesives are hereby disclosed.
摘要:
The present invention provides a tire improved in the run flat durability, having at least one member selected from the group consisting of a side reinforcing rubber layer and a bead filler using a rubber composition comprising a rubber component containing 20% by mass or more of a modified conjugated diene based polymer, satisfying Expression (1) in terms of the elongation X under a stress of 6.5 MPa at 180°C and the elongation Y under a stress of 6.5 MPa at 25°C after vulcanization. 1.00 ≤ X / Y ≤ 1.15
摘要:
The rubber composition of the present invention is prepared by mixing a rubber component (A), zinc oxide (B), and a co-condensate (C) having a softening point of 150°C or lower and containing a p-tert-butylphenol-derived constituent unit represented by the following formula (1), an o-phenylphenol-derived constituent unit represented by the following formula (2) and a resorcinol-derived constituent unit represented by the following formula (3), wherein the nitrogen adsorption specific surface area (N 2 SA) of the zinc oxide (B) measured according to the BET method is 6 m 2 /g or more and 110 m 2 /g or less, the mixing amount of the zinc oxide (B) is 5 parts by mass or more and 13 parts by mass or less based on 100 parts by mass of the rubber component (A), and the mixing amount of the co-condensate (C) is 0.1 parts by mass or more and 10 parts by mass or less based on 100 parts by mass of the rubber component (A). The co-condensate (C) is usable as a replacement for p-tert-octylphenol and p-nonylphenol, has a softening point lower than the maximum temperature in a rubber processing step, and has excellent dispersibility in rubber.
摘要:
The present invention relates to a process for reducing the content of free formaldehyde in a commercial phenolformaldehyde resin, comprising the step of treating a phenolformaldehyde resin with at least one phenol derivative or aniline derivative, wherein the pH of the resin is 7 or higher. The present invention further relates to a phenolformaldehyde resin resulting from this process. The phenolformaldehyde resin obtained by the process of the present invention may be used for the preparation of a binder composition for mineral wool products.
摘要:
The present describes wood adhesives reinforced with cellulose nanocrystals (CNC), in liquid and powder forms in which resin system are a phenol-formaldehyde polymer and/or lignin-phenol-formaldehyde polymer and polymeric methylene diphenyl diisocyanate (pMDI), and a method of making this polymer in liquid and powder from and the composite products that can be produced therefrom.
摘要:
The present invention is based upon a coating system that uses polycyclic polyester polymers and phenolic resins. The coating system comprises first and second coatings. The first coating preferably is derived from ingredients comprising a polycyclic polyester resin having first and second fused rings that share at least two atoms in common. The second coating preferably is derived from ingredients comprising a polycyclic polyester resin that may be different than the polyester of the first coating.
摘要:
Tire components made of rubber compositions that comprises, per 100 parts by weight of rubber (phr) 100 phr or an essentially unsaturated diene rubber, between 30 phr and 150 phr of a reinforcing filler and between 2 phr and 50 phr of a high-styrene content styrene-butadiene copolymer additive, the styrene-butadiene copolymer additive having a styrene content of between 50 wt. % and 90 wt. %. Alternatively, the styrene content of the styrene-butadiene copolymer additive may be between 55 wt. % and 80 wt. %. Because the rigidity of the resulting cured rubber composition is high, particular embodiments may include components around the bead area of a tire and tire treads, including winter tire treads.
摘要:
The present invention provides coating systems that use polycyclic polyester resins in combination with phenolic resins. The combination of these resin materials provides a coating composition that provides cured coatings with excellent adhesion, blush resistance, stain resistance, and corrosion resistance in a single coating composition. This makes the coating compositions well suited for use to form coatings on closures used in the packaging industry for food and beverages. In many embodiments, even though PVC and BPA materials are excluded, the coating compositions provide monocoats whose performance substantially matches and even exceeds the performance of monocoats formed from PVC and BPA containing materials.
摘要:
There is provided a rubber composition which does not foul molds, requires low production costs and is excellent in mass productivity, and has high adhesion reliability. The rubber composition according to the present invention is used in an adhesive layer 6 included in a fuel cell sealed body allowing a constituting member for a fuel cell 2, 3 or 5 and a rubber member for sealing 4a or 4b to be bonded together through the adhesive layer 6 or allowing the two rubber members 4a and 4a to be bonded together through the adhesive layer 6, and is any one of the following liquid rubber composition (±) and the following solvent-based rubber composition (²). (±) a liquid rubber composition containing (B) and (C) together with the following (A1). (²) a solvent-based rubber composition containing a solvent together with the following (A2), (B) and (C). (A1) a rubber component containing at least liquid rubber. (A2) at least one selected from the group consisting of EPM, EPDM, NBR and H-NBR. (B) a crosslinking agent composed of an organic peroxide. (C) at least one selected from the group consisting of resorcinol-based compounds, melamine-based compounds, aluminate-based coupling agents and silane coupling agents.