The polyurethane and tertiary amine may be heated to 50-150 DEG C. to effect stabilization. In a typical example (1) a solution of a polyurethane was prepared by first reacting a copolyester from adipic acid, 2:2 dimethylpropane diol 1:3 and hexane diol 1:6 with diphenylmethane 4,41 ...
摘要: The invention relates to novel aqueous polyurethane-polyurea dispersions that are stabilised against thermal yellowing and have excellent mechanical properties, and to the production and use of the same.收藏 引用 批量引用 报错 分享 文库来源 其他来源 求助全文 POLYURETHANE-POLYUREA DISPERSIONS ...
polyurethane cots are the same. Compared with NBR roller, polyurethane cots are a brand-new product. Its promotion requires enterprises to have an open concept in the trial process, not to be restricted by various habits of NBR roller cots, and to have a tolerant and open mind to the pr...
High resilience polyurethane foams exhibiting little or no shrinkage may be prepared from low unsaturation double metal cyanide catalyzed polyoxyalkylene polyols in amounts greater than 20 weight percent of the total polyol component, when low unsaturation poly(oxypropylene/oxyethylene) random polyols havin...
the hydroxyl-containing component of at least one different liquid flame retardants and / or the flexible polyurethane foam-forming mixture ) and comprises; cyclic phosphoric acid ester of the formula (I), which contains at least 8.5 wt% phosphorus based on the total weight of all the ...
摘要：The invention relates to novel aqueous polyurethane-polyurea dispersions that are stabilised against thermal yellowing and have excellent mechanical properties, and to the production and use of the same.申请人：RISCHE, Thorsten,MEIXNER, Jürgen,POHL, Torsten,FELLER, Thomas,KLIPPERT, Uwe 地址：...
Despite the factors of air been brought in by stirring and form a large number of small bubbles in the polyurethane electronic potting material. The main reason of the forming of air bubbles is that the water content in the material is too high. ...
encased in a black polyurethane sleeve. They are 青云英语翻译 请在下面的文本框内输入文字,然后点击开始翻译按钮进行翻译,如果您看不到结果,请重新翻译! 翻译结果1翻译结果2翻译结果3翻译结果4翻译结果5 翻译结果1复制译文编辑译文朗读译文返回顶部 包裹在一个黑色的聚氨酯套。他们是...
What are the pros and cons of MVNOs? (Image credit: Tim Robberts) Overall, there are very few differences between an MVNO and one of the main best phone carriers. As these smaller networks are using their networks, they are getting the same speeds, coverage, and connections of the main...
a广告内容夸张,语言大多华而不实,容易给人错觉 The advertisement content exaggeration, the language mostly is flashy but lacking substance, easy to give the human the illusion [translate] aChangzhou Ling Guang anti-corrosion coating Oxford limited joint development of waterborne polyurethane 正在翻译,请...