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21. 发明授权

US5332764A Polyether polyol production of a flexible urethane foam and shaped article therefrom 失效
标题翻译：聚醚多元醇生产柔性聚氨酯泡沫及其成型制品
公开(公告)号：US5332764A
公开(公告)日：1994-07-26
申请号：US141942
申请日：1993-10-28
申请人： Yoshihiko Tairaka , Mitsuhiro Nishimura , Katsuhisa Kodama
发明人： Yoshihiko Tairaka , Mitsuhiro Nishimura , Katsuhisa Kodama
IPC分类号： C08G18/50 , C08G18/63 , C08G18/00
CPC分类号： C08G18/506 , C08G18/632 , C08G2101/0008 , C08G2101/0083
摘要： A polyether polyol produced by using an N-aminoethylpiperazine-ethylene oxide aduct as an initiator and addition-polymerizing an alkylene oxide thereto and having a molecular weight of about 2000 to 7000; a process for producing a flexible urethane foam starting with the above polyether polyol; a process suited for the production of a hot-cure urethane foam which comprises using the above polyether polyol with a hydroxyl value of 40 to 80 mg KOH/g and, as a blowing agent, 4.6 to 6.0 weight parts of water based on 100 weight parts of the polyol; and a process suited for the production of a cold-cure urethane foam which comprises using the above polyether polyol with a hydroxyl value of 23 to 50 mg KOH/g and, as a blowing agent, 2.5 to 5.0 weight parts of water on the same basis.The use of the polyether polyol enables the production of a low-density, low-hardness flexible urethane foam using a small amount of water, without requiring any environment-unfriendly chlorofluorocarbon and without being accompanied by deterioration of humid age compression set and other characteristics.
摘要翻译：通过使用N-氨基乙基哌嗪 - 环氧乙烷加成物作为引发剂，加成聚合烯化氧并分子量为约2000〜7000的聚醚多元醇; 从上述聚醚多元醇开始制造柔性聚氨酯泡沫塑料的方法; 一种适用于生产热固化聚氨酯泡沫的方法，其包括使用上述羟值为40-80mg KOH / g的聚醚多元醇，作为发泡剂，基于100重量份为4.6至6.0重量份的水部分多元醇; 以及适用于生产冷固化聚氨酯泡沫的方法，该方法包括使用上述羟值为23至50mg KOH / g的聚醚多元醇，作为发泡剂，使用2.5至5.0重量份的水基础。使用聚醚多元醇能够使用少量的水生产低密度，低硬度的柔性聚氨酯泡沫，而不需要任何环境不友好的氯氟烃，并且不伴随潮湿压缩永久变形和其它特性的恶化。

22. 发明授权

US6057034A Coating composition for optical fiber 失效
标题翻译：光纤用涂料组合物
公开(公告)号：US6057034A
公开(公告)日：2000-05-02
申请号：US65483
申请日：1998-04-24
申请人： Kyuya Yamazaki , Mitsuhiro Nishimura , Takashi Uemura , Akira Yamamoto , Shouhei Kozakai , Masatoshi Asano
发明人： Kyuya Yamazaki , Mitsuhiro Nishimura , Takashi Uemura , Akira Yamamoto , Shouhei Kozakai , Masatoshi Asano
IPC分类号： G02B6/44 , C03C25/10 , C03C25/24 , C08F2/50 , C08F290/06 , C08F290/14 , C08G18/10 , C08G18/66 , C08G18/67 , C09D4/02 , C09D175/16 , D02G3/00
CPC分类号： C08G18/672 , C03C25/106 , C08F290/147 , C08G18/10 , C08G18/6674 , Y10T428/2938
摘要： In the coating composition for a optical fiber of the present invention, a polyurethane (meth)acrylate oligomer (A), which is based on a urethane prepolymer having an equivalent ratio of NCO group in a polyisocyanate (a) to OH group in a polyol (b) of more than 3.0, is used and the oligomer (A) has a mixing weight ratio of an oligomer (d) having a number average molecular weight of 800 or less to an oligomer (e) having a number average molecular weight of 1,000 or more of 30/70-70/30.The coating composition of this invention has a low viscosity, and therefore, is suitable for a rapid fiber-drawing in a production of an optical fiber. Further, a cured material obtained from the coating composition of the present invention has both a high elastic modulus and a high elongation, which properties are required for a hard material, and has a slight change of elastic modulus with a change of temperature to improve a long-term reliability of an optical fiber.
摘要翻译：在本发明的光纤用涂料组合物中，以多异氰酸酯（a）中的NCO基与OH基的多元醇的氨基甲酸酯预聚物为基准的聚氨酯（甲基）丙烯酸酯低聚物（A）（b）为3.0以上，低聚物（A）的数均分子量为800以下的低聚物（d）与数均分子量为800以下的低聚物（e）的混合重量比为 30 / 70-70 / 30的1,000或更多。本发明的涂料组合物具有低粘度，因此适用于光纤生产中的快速拉伸。此外，由本发明的涂料组合物得到的固化物具有高的弹性模量和高的伸长率，硬质材料需要这些性能，并随着温度的变化而具有轻微的弹性模量的变化，从而改善了光纤的长期可靠性。

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