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    • 31. 发明授权
    • Method for improving impulse destructive strength of electrical
insulating materials
    • 提高电绝缘材料冲击破坏强度的方法
    • US4748209A
    • 1988-05-31
    • US59420
    • 1987-06-08
    • Yuichi OrikasaShinji KojimaTakashi InoueKaoru YamamotoAtsushi SatoShigenobu Kawakami
    • Yuichi OrikasaShinji KojimaTakashi InoueKaoru YamamotoAtsushi SatoShigenobu Kawakami
    • C08L23/00C08F210/02C08L7/00C08L21/00C08L23/04C08L33/00C08L33/02C08L101/00H01B3/44C08F212/08
    • H01B3/44C08F210/02Y10S526/913
    • The present invention provides a method for improving impulse destructive strength of an electrical insulating material which is characterized by employing, as the electrical insulating material, a random copolymer of a styrene series monomer and ethylene or a combination of ethylene and another ethylenic unsaturated monomer, or a composition in which the copolymer is blended with an ethylene series polymer, the copolymer being prepared by introducing, into a reaction system, the styrene series monomer selected from the group of styrene and single-ring substituted styrenes, ethylene or the combination of ethylene and the ethylenic unsaturated monomer and a polymerization initiator, the latter being introduced thereinto separately from at least the styrene series monomer, and subjecting these monomers to a high-pressure radical copolymerization under a polymerization pressure of 500 to 4,000 kg/cm.sup.2 at a polymerization temperature of 50.degree. to 400.degree. C., the aforesaid polymer or composition satisfying the following (a) and (b):(a) a content of the styrene series monomer in the copolymer or the composition being within the range of 0.01 to 1 mol %; and(b) a crystallinity of the copolymer or the composition being 30% or more in accordance with X-ray diffraction.
    • 本发明提供一种提高电绝缘材料的冲击破坏强度的方法,其特征在于使用苯乙烯系单体与乙烯或乙烯与其它烯键式不饱和单体的组合的无规共聚物作为电绝缘材料,或 共聚物与乙烯系聚合物共混的组合物,该共聚物是通过将选自苯乙烯和单环取代的苯乙烯的苯乙烯系单体,乙烯或乙烯与乙烯的组合引入反应体系而制备的 烯属不饱和单体和聚合引发剂,后者与至少苯乙烯系单体分开引入,并在聚合温度为500〜4000kg / cm2的聚合压力下对这些单体进行高压自由基共聚 50℃〜400℃,上述聚合物或组合物 满足以下(a)和(b):(a)共聚物中的苯乙烯系单体的含量或组成在0.01〜1摩尔%的范围内; 和(b)根据X射线衍射,共聚物或组合物的结晶度为30%以上。
    • 39. 发明授权
    • Pressure-sensitive recording material
    • 压敏记录材料
    • US4686548A
    • 1987-08-11
    • US745317
    • 1985-06-14
    • Naoya TakahashiKeiji EndoEiichi MatsuzakaSatoshi NaruiAtsushi Sato
    • Naoya TakahashiKeiji EndoEiichi MatsuzakaSatoshi NaruiAtsushi Sato
    • B41M5/165B41M5/16B41M5/22
    • B41M5/1655
    • A pressure-sensitive recording material of the type which is prepared by using an electron donating dye-precursor that produces a color when the dye-precursor is brought into contact with an electron accepting color developer. The pressure-sensitive recording material is characterized in that the solvent for said dye-precursor comprises an alkylated fraction which is prepared by alkylating a by-product fraction with at least one alkyl group having 1 to 5 carbon atoms, the by-product fraction containing the components within the boiling range of 255.degree. to 300.degree. C. on the atmospheric pressure basis and being obtained in the process for producing ethylbenzene or ethyltoluene from ethylene and benzene or toluene. The pressure-sensitive recording material of the invention has scarcely offensive odor and can develop a dense color with a higher color developing rate.
    • 一种压敏记录材料,其是通过使用当染料前体与电子接受显色剂接触时产生颜色的给电子染料前体制备的。 压敏记录材料的特征在于,用于所述染料前体的溶剂包括烷基化部分,其通过用至少一个具有1至5个碳原子的烷基烷基化副产物部分制备,副产物部分含有 该成分在大气压的基础上在255〜300℃的沸点范围内,并且在从乙烯和苯或甲苯生产乙苯或乙基甲苯的方法中得到。 本发明的压敏记录材料几乎没有异味,并且可以产生具有更高显色速率的致密颜色。