摘要:
Methods for the synthesis of N-substituted carboxylated pyridinium compounds by reaction of a pentamethine precursor with a primary amine are provided. In this reaction an N-substituted alkoxycarbonyl pyridinium heterocycle is formed.
摘要:
Methods for the synthesis of N-substituted carboxylated pyridinium compounds by reaction of a pentamethine precursor with a primary amine are provided. In this reaction an N-substituted alkoxycarbonyl pyridinium heterocycle is formed.
摘要:
A blowing agent concentrate comprising a chemical blowing agent and a thermoplastic composition vehicle therefore, said thermoplastic composition being a saturated polyester and/or copolyester having a crystalline melting point between 100.degree. C. and 220.degree. C. and a reduced viscosity of 0.4 dl/g to 1.6 dl/g; the use of such blowing agent concentrate in the formation of foamed articles of high molecular weight polyalkyleneterephthalate which articles can be filled and/or reinforced and/or flame proofed and can contain other additives. Particularly contemplated is the use of such blowing agent concentrate in the formation of glass fiber reinforced structural foam moldings of polyalkyleneterephthalates especially polytetramethylene terephthalates.
摘要:
A powder coating composition comprising a homopolymer or copolymer of polyvinylidene fluoride having a melt flow index of 10 to 300 grams per ten minutes, determined in accordance with ASTM D 1238, Condition J and 5 to 50 weight percent of a glass having a grain size of 1 to 300 .mu.m; an improvement in a method of coating a metal or inorganic oxidic surface wherein a powder coating composition containing polyvinylidene fluoride is applied to such surface and fused thereon, the improvement residing in employing as the powder coating composition one containing 5 to 50 weight percent glass, based upon the weight of the polyvinylidene fluoride polymer; a coated object having a metallic or inorganic oxidic surface which is coated with a polyvinylidene fluoride homopolymer or copolymer which coating contains 5 to 50 weight percent, based upon the weight of the polyvinylidene fluoride, of glass particles, especially glass particles of a grain size of 1 to 300 .mu.m.
摘要翻译:一种粉末涂料组合物,其包含熔体流动指数为10至300克/ 10分钟的聚偏二氟乙烯的均聚物或共聚物,其根据ASTM D 1238,条件J和5至50重量%的晶粒尺寸为 1〜300亩; 涂覆金属或无机氧化物表面的方法的改进,其中将含有聚偏二氟乙烯的粉末涂料组合物施用于这种表面并在其上熔融,其改进在于使用含有5至50重量%玻璃基的粉末涂料组合物 以聚偏二氟乙烯聚合物的重量计; 具有金属或无机氧化物表面的被覆物体,其涂覆有聚偏二氟乙烯均聚物或共聚物,该涂层含有基于聚偏二氟乙烯重量的5-50重量%的玻璃颗粒,特别是玻璃颗粒的玻璃颗粒, 1〜300亩。
摘要:
Adherence of polyvinylchloride coatings to substrates such as metal, glass, and ceramics is improved by using as the coating composition a copolymer of polyvinylchloride admixed with monoalkyl-monyaryl, dialkyl, or diaryl tin bismercaptocarboxylic acid ester of polyvalent alcohol. The composition adheres directly to the substrate.
摘要:
A branched polycarbonate resin suitable for making containers is disclosed. The polycarbonate is characterized in that at 260° C. and shear rate of 10 s−1 it has a melt viscosity of 5500 to 900 Pas, and in that at 260° C. and shear rate of 1000 s−1 it has a melt viscosity of 880 tom 1500 Pas, and in that it has a melt flow index (MFR) of 0.1 to 3.0 g/10 min. A container made of the polycarbonate exhibits great breaking strength.
摘要:
A powder coating composition comprising a homopolymer or copolymer of polyvinylidene fluoride having a melt flow index of 10 to 300 grams per ten minutes, determined in accordance with ASTM D 1238, Condition J and 5 to 50 weight percent of a glass having a grain size of 1 to 300 .mu.m; an improvement in a method of coating a metal or inorganic oxidic surface wherein a powder coating composition containing polyvinylidene fluoride is applied to such surface and fused thereon, the improvement residing in employing as the powder coating composition one containing 5 to 50 weight percent glass, based upon the weight of the polyvinylidene fluoride polymer; a coated object having a metallic or inorganic oxidic surface which is coated with a polyvinylidene fluoride homopolymer or copolymer which coating contains 5 to 50 weight percent, based upon the weight of the polyvinylidene fluoride, of glass particles, especially glass particles of a grain size of 1 to 300 .mu.m.
摘要翻译:一种粉末涂料组合物,其包含熔体流动指数为10至300克/ 10分钟的聚偏二氟乙烯的均聚物或共聚物,其根据ASTM D 1238,条件J和5至50重量%的晶粒尺寸为 1〜300亩; 涂覆金属或无机氧化物表面的方法的改进,其中将含有聚偏二氟乙烯的粉末涂料组合物施用于这种表面并在其上熔融,其改进在于使用含有5至50重量%玻璃基的粉末涂料组合物 以聚偏二氟乙烯聚合物的重量计; 具有金属或无机氧化物表面的被覆物体,其涂覆有聚偏二氟乙烯均聚物或共聚物,该涂层含有基于聚偏二氟乙烯重量的5-50重量%的玻璃颗粒,特别是玻璃颗粒的玻璃颗粒, 1〜300亩。
摘要:
A modified polyester composition comprising the condensation product of terephthalic acid or a polyester-forming derivative thereof and a diol, said polyester having an arithmetical mean molecular weight M.sub.n or more than 17,000, a carboxyl equivalent of at least 10 mVal/kg, a nitrogen content of less than 0.4 weight percent and urethane groups linked linearly to said polyester; a process for preparing such modified polyester and a molding composition comprising such modified polyester and an additive, suitably a filler and in particular glass fibers.