摘要:
A method for preparing molded articles of a cross-linked polyolefin involves mixing polyolefin granules comprising polyolefin granules containing a hydrosilylation catalyst, polyolefin granules containing the copolymer of an alkenylsilane and an olefln, and if necessary, polyolefin granules containing neither the hydrosilylation catalyst nor the copolymer of the alkenylsilane and the olefin, and then heating, melting and molding the mixture in a molding machine. Molded articles of the crosslinked polyolefin contain no residual crosslinking agent and have improved heat resistance and mechanical strength can be obtained by the aforesaid method.
摘要:
A carboxylate is herein disclosed which is represented by the formula (1) or (2)
wherein a ring X is an aromatic residue which may have a substituent; A is =NH or -(OR³ or OR⁴) (wherein each of R³ and R⁴ is independently an alkyl group having 1 to 8 carbon atoms which may have a substituent, and R³ and R⁴ may bond to each other to form a ring); R¹ is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms which may have a substituent, an aralkyl group which may have a substituent, or an aryl group which may have a substitutent, but when A is =NH, R¹ is an aryl group which may have a substituent; and R² is an alkyl group having 1 to 8 carbon atoms which may have a substituent. A heat-sensitive recording material comprising this carboxylate is excellent in the stability of the color image and can provide an optically character-readable sharp color image.
摘要翻译:本文公开的由式(1)或(2)表示的羧酸酯,其中环X是可以具有取代基的芳族残基; A是= NH或 - (OR 3或OR 4)(其中R 3和R 4各自独立地为可以具有取代基的具有1至8个碳原子的烷基, 3>和R 4可以彼此键合形成环); R 1是氢原子,可以具有取代基的碳原子数为1〜20的烷基,可以具有取代基的芳烷基或可以具有取代基的芳基,但是当A为NH时, R 1是可以具有取代基的芳基; R 2是可以具有取代基的碳原子数为1〜8的烷基。 包含该羧酸盐的热敏记录材料在彩色图像的稳定性上是优异的,并且可以提供光学上可读的锐利彩色图像。
摘要:
Novel quinophthalone compounds, which are represented by the following formula (1):
R₁-R₅ each independently represents a hydrogen or halogen atom or a hydroxy, linear or branched alkyl, substituted or unsubstituted cycloalkyl, halogenated alkyl, alkoxyalkyl, alkoxy, nitro, amino, alkylamino, carboxyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, alkylcarbonylamino, alkylcarbonyloxy or cyano group; R₆-R₁₇ each independently represents a hydrogen or halogen atom or a hydroxyl, alkyl, halogenated alkyl, alkoxy, nitro, amino, alkylamino, carboxyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, alkylcarbonyloxy or cyano group; m and n each stands . for 0 or 1; and A represents a substituent, are yellow orange dyestuffs suitable for polarizing films. Polarizing films containing at least one of the compounds in a hydrophobic resin are excellent in polarizing performance, heat-resistant dimensional stability, moist heat resistance and the like and are extremely useful for liquid crystal display devices.
摘要:
A method of treating an exhaust gas comprises the steps of loading into a column an exhaust gas treating agent containing as a main component a metal a surface of which is fluorinated previously; passing through the column the exhaust gas containing nitrogen trifluoride as a component to be treated; and contacting the exhaust gas with the exhaust gas treating agent.
摘要:
A method of producing syndiotactic polypropylene characterized by washing a polymer produced by polymerizing propylene in the presence of a catalyst comprising a transition metal compound having unsymmetrical ligands with a hydrocarbon solvent. A syndiotactic polypropylene having further improved properties can be obtained by treating the formed polymer slurry with a mixture of a β-dicarboxy compound and an alcohol or with an alcohol containing hydrogen chloride under a nonaqueous condition to thereby solubilize the residue of the catalyst used in the polymerization in the hydrocarbon solvent before conducting the washing.