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公开(公告)号:US4514577A
公开(公告)日:1985-04-30
申请号:US434827
申请日:1982-10-15
IPC分类号: C07C37/16 , C07C41/09 , C07C45/00 , C08K5/13 , C10L1/182 , C10M129/10 , C11B5/00 , C07C39/14
CPC分类号: C11B5/0035 , C07C37/16 , C07C41/09 , C07C45/002 , C08K5/13 , C10L1/1826 , C10M129/10 , C10M2207/023 , C10M2207/281 , C10M2207/282 , C10M2207/283 , C10M2207/286 , C10M2209/084 , C10M2215/04 , C10M2215/065 , C10M2215/26 , C10M2217/046 , C10M2217/06 , C10M2219/046 , C10M2219/10 , C10M2219/102 , C10M2219/104 , C10M2219/106 , C10M2223/041 , C10M2229/041 , C10N2240/10 , C10N2240/101 , C10N2240/104 , C10N2240/106
摘要: Phenols having an unsubstituted ortho-position are benzylated by reaction with a benzyl alcohol in contact with an activated alumina catalyst especially gamma alumina at a temperature sufficient to maintain the reactants in the vapor phase.
摘要翻译: 具有未取代的邻位的苯酚通过与活化的氧化铝催化剂,特别是γ氧化铝接触的苄醇与足以使反应物保持在气相中的温度反应而进行苄基化。
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公开(公告)号:US4406665A
公开(公告)日:1983-09-27
申请号:US408074
申请日:1982-08-16
申请人: Allen H. Filbey
发明人: Allen H. Filbey
IPC分类号: C07D211/42 , C07D211/46 , C07D295/088 , C07D307/18 , C10L1/02 , C10L1/182 , C10L1/22 , C10L1/23 , C10L1/232 , C10L1/233 , C10L10/12 , F02B1/04 , F02B3/06
CPC分类号: C07D295/088 , C07D211/42 , C07D211/46 , C07D307/18 , C10L1/026 , C10L1/231 , C10L1/2335 , F02B1/04 , F02B3/06
摘要: Cetane number of diesel fuel, both hydrocarbon and alcohol, is increased by adding a small amount of a tetrahydrofuranol nitrate.
摘要翻译: 通过加入少量的四氢呋喃醇硝酸盐来增加柴油燃料(烃和醇)的十六烷值。
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3.
公开(公告)号:US4526905A
公开(公告)日:1985-07-02
申请号:US612965
申请日:1984-05-23
CPC分类号: C08G18/6618 , C08G18/10 , C08G18/3234 , C08G18/324 , C08G2120/00
摘要: Dialkyl diamines for use with polyols and polyisocyanates in cast elastomer and reaction injection molding polyurethane processes. The dialkyl diamines are prepared by nitration and reduction of dialkylbenzenes or alkylation of meta-phenylenediamine. The chain extenders have the following structure: ##STR1## where R.sub.1 is C.sub.1 -C.sub.6 alkyl or C.sub.3 -C.sub.6 cycloalkyl and R.sub.2 is C.sub.2 -C.sub.6 alkyl or C.sub.3 -C.sub.6 cycloalkyl.Contrary to the teachings of the prior art the novel diamines have surprisingly good reaction times to form polyurethanes with excellent physical properties. Furthermore, little or no mold release is required in RIM and other processes using the chain extenders of the invention.
摘要翻译: 用于浇铸弹性体中的多元醇和多异氰酸酯的二烷基二胺和反应注塑聚氨酯工艺。 二烷基二胺通过硝化和还原二烷基苯或间苯二胺的烷基化来制备。 扩链剂具有以下结构:其中R 1是C 1 -C 6烷基或C 3 -C 6环烷基,R 2是C 2 -C 6烷基或C 3 -C 6环烷基。 与现有技术的教导相反,新型二胺具有令人惊奇的良好反应时间以形成具有优异物理性能的聚氨酯。 此外,在使用本发明的扩链剂的RIM和其它方法中,很少或不需要脱模。
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