专利名称：HR FOAM FOR SHEET CUSHION WITH EXCELLENT DYNAMIC VIBRATION
成考成绩查询CHARACTERISTICS
发明人：NAKANO YOSHINOBU,ENDO
KOJI,MATSUMOTO KENKICHI,HAYAMA
MITSUAKI
直接引语变间接引语
just so so申请号：JP27944489
申请日：19891026
公开号：JPH03140319A
pay per view公开日：sperian
历年六级真题下载
19910614
refu的名词专利内容由知识产权出版社提供cage是什么意思
摘要：PURPOSE:To obtain a high-resilience foam excellent in dynamic vibration characteristics, for sheet cushions for u in automobiles, etc., by using as polyol component(s), each specific terminal ethylene oxide-modified polypropylene glycol
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and/or polymer polyol. CONSTITUTION:Using, as polyol component, a polyol containing >= pref. 15wt.% of a terminal ethylene oxide-modified polypropylene glycol 5-20 in OH value and/or a polymer polyol 3-18 in OH value, an isocyanate component is reacted in the prence of a chain extender, foam stabilizer, catalyst, etc., thus obtaining the objective high-resilience foam for sheet cushions reduced in dynamic spring constant and decread in resonant vibration frequency to <=3.0 with its density and hardness retained.
儿童歌曲免费下载申请人：TOYO TIRE & RUBBER CO LTD
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