摘要:
The present invention provides an ethylene-acrylic acid ester copolymer giving low deformation during vulcanization and having a high dimensional accuracy and excellent properties, as well as a process for producing said copolymer.
摘要:
An elastomeric copolymer of an aromatic vinyl compound and butadiene prepared by a solution polymerization method, which has a glass transition temperature of not less than -50.degree. C. and contains polymer chains modified with a trifunctional or tetrafunctional coupling agent, and which contains not less than 3% by weight to less than 23% by weight, based on the whole polymer chains, of polymer chains having a molecular weight of at least 5 times a molecular weight corresponding to a peak appearing on the low molecular weight side of a high performance liquid chromatogram of the elastomeric copolymer. The elastomeric copolymer has an excellent processability and shows a low rolling resistance and a high wet grip characteristic when used as a rubber component in tires.
摘要:
A spawning case for use in an aquarium comprises in combination a rectangular case body (A) and filter (B). The case body (A) is arranged within the aquarium so as to communicate with water. The case body A includes a multiplicity of passage slits (11) and a W-shaped partition member (20) having communication paths (24) formed at its valleys. The filter (B) is removably mounted on the external surface of the case body (A). The filter (B) includes on its one side an intake (C) which is brought into intimate contact with the passage slits (11), and at its upper portion a discharge port (33) capable of being selectively directed toward either the interior or the exterior of the case body (A).
摘要:
A growth promoter for aquatic plants, which increases the carbonate concentration in water to promote the growth of aquatic plants and contains phosphate as an active component, and a method for applying said growth promoter, which comprises placing an aqueous solution or dispersion of the growth promoter in a container of which one end is narrowly opened and placing the container in water in a water tank thereby to allow the growth promoter to ooze through the narrowly opened end.
摘要:
A vulcanizable epoxy group-containing elastomer composition is disclosed, which comprises:(A) an epoxy group-containing elastomer having compounded therewith(B) an organic compound having at least two linkages, per molecule, of the formula ##STR1## wherein X and Y are each oxygen atom or sulfur atom, or one of X and Y is oxygen atom and the other is sulfur atom;(C) a quaternary ammonium salt and/or a quaternary phosphonium salt;(D) a compound having one linkage, per molecule, of the formula ##STR2## wherein Z is oxygen atom or sulfur atom; and (E) calcium oxide or a combination of calcium oxide and calcium hydroxide.
摘要:
A coating method and apparatus in which a coating composition is applied from a hopper to a web continuously travelling on a backing roller. The backing roller is rapidly moved by a pneumatic mechanism relative to the hopper between positions at which the composition can and cannot be applied to the travelling web in order to avoid thick coating at a leading portion or at a spliced portion of the web.
摘要:
A diene rubber composition comprising as a main rubber component an elastomeric polymer having a glass transition temperature of not less than -50.degree. C. selected from the group consisting of a butadiene homopolymer and a copolymer of butadiene and an aromatic vinyl compound, said elastomeric polymer being one prepared by a solution polymerization method and not less than 40% by weight to less than 65% by weight of the polymer chains thereof being branched polymer chains formed by coupling the polymer molecules with each other with a trifunctional or tetrafunctional coupling agent. The composition has excellent rolling resistance characteristic, wet grip characteristic, processability, tear strength and tackiness, and is suitable particularly for use in the tread portion of tires.
摘要:
A process for removing ash from coal comprising the steps of pulverizing the coal to fine particles, admixing water with the finely divided coal to prepare an ash-containing slurry of finely divided coal, mixing with the slurry an oil and seeds in the form of oleophilic solid grains and serving as granulating nuclei to granulate the finely divided coal, separating the resulting granules from the mixture and washing the granules with water to remove the ash, and disintegrating the washed granules to obtain a deashed coal and recover the seeds for reuse.
摘要:
The present invention provides a fructosylamine oxidase which is obtainable by culturing Fusarium proliferatum, and purifying two types of fructosylamine oxidase (FAO) with different substrate specificities from the culture, and which is useful in the measurement of amadori compounds.
摘要:
An automated system has a monitor computer, which is for remote monitoring and/or analysis of control information of an input/output control device connected to a production facility, a control computer for controlling the processes of operation of the production facility via the input/output control device, and a dual-port memory as an information transmission unit capable of transmitting the control information between the monitor computer and the control computer at a timing that is independent of control of the processes of operation, which is capable of real-time reading/writing to/from all or a part of a memory of the control computer and is written, workpiece-related data, such as status of operation, results of measurement and flags representing the sequence flow information on a per-workpiece basis or per-process basis.