-
-
公开(公告)号:US5712407A
公开(公告)日:1998-01-27
申请号:US782991
申请日:1997-01-14
CPC分类号: C07C68/02
摘要: Novel catalysts for the synthesis of a alpha-chlorinated chloroformate from an aldehyde and phosgene are described. The catalysts include alkyl substituted guanidines, hexasubstituted guanidinium chlorides, substituted biguanidinium chloride, phenyldialkyliminiumtetraalkylguanidinium chloride, dialkylimidazolinium tetraalkylguanidinium chloride, phenyltetraalkylamidinium chloride and N,N-dialkyl-N'-alkylpyrrolidinium chloride.
摘要翻译: 描述了用于从醛和光气合成α-氯代氯甲酸酯的新型催化剂。 催化剂包括烷基取代的胍胺,六取代的氯化胍,取代的双胍鎓氯化物,氯化二苯基二烷基亚胺鎓四烷基胍盐,氯化四烷基氯化二烷基咪唑鎓,氯化苯基四烷基氯化铵和N,N-二烷基-N'-烷基吡咯烷鎓氯化物。
-
公开(公告)号:US5356983A
公开(公告)日:1994-10-18
申请号:US24710
申请日:1993-03-01
CPC分类号: C08K3/32
摘要: Small particles of ammonium dihydrogen phosphate, diammonium hydrogen phosphate, or a mixture thereof provide a higher Limiting Oxygen Index ("LOI") to polyolefin compositions containing the small particles than do larger particles of the same substance. In many instances, improvement in one or more other properties, such as for example, processability, appearance, UL-94 rating, tensile strength, tensile modulus, and/or elongation at break is also obtained.
摘要翻译: 与相同物质的较大颗粒相比,磷酸二氢铵,磷酸氢二铵或其混合物的小颗粒对含有小颗粒的聚烯烃组合物提供较高的极限氧指数(“LOI”)。 在许多情况下,还获得了一种或多种其它性能(例如加工性,外观,UL-94等级,拉伸强度,拉伸模量和/或断裂伸长率)的改进。
-
公开(公告)号:US5130349A
公开(公告)日:1992-07-14
申请号:US788905
申请日:1991-11-07
IPC分类号: C09K21/14
CPC分类号: C09K21/14
摘要: The water resistance of intumescent compositions is improved if the composition comprises at least one organotin derivative of a polyol. Organotin derivatives of polyols can be produced by reacting polyol with dialkyltin oxide or with dialkyltin dialkoxide.
摘要翻译: 如果组合物包含多元醇的至少一种有机锡衍生物,则膨胀组合物的耐水性得到改善。 多元醇的有机锡衍生物可以通过使多元醇与二烷基氧化锡或二烷基锡二烷氧化物反应来制备。
-
-
-