Process for the manufacture of mixtures of diphenylmethane diisocyanates
and polyphenyl polymethylene polyisocyanates
    81.
    发明授权
    Process for the manufacture of mixtures of diphenylmethane diisocyanates and polyphenyl polymethylene polyisocyanates 失效
    制备二苯基甲烷二异氰酸酯和聚苯基多亚甲基多异氰酸酯的混合物的方法

    公开(公告)号:US4349484A

    公开(公告)日:1982-09-14

    申请号:US197890

    申请日:1980-10-17

    CPC分类号: C07C263/04 C07C271/06

    摘要: A process for the production of mixtures of diphenylmethane diisocyanates and polyphenyl polymethylene polyisocyanates comprising the steps ofA. reacting aniline and an O-alkyl carbamate to form N-phenylurethanes;B. isolating the N-phenylurethanes;C. condensing, in the presence of an acid, the N-phenylurethanes with formaldehyde or bifunctional compounds having the formulaX--CH.sub.2 --X in which X stands for a RO--, RS-- or ROCO radical and R denotes an alkyl radical, to form mixtures of methylene bis(phenylurethanes) and polymethylene polyphenylurethanes;D. cleaving the mixtures of methylene bis(phenylurethanes) and polymethylene polyphenylurethanes at temperatures of 175.degree. C. to 600.degree. C.; andE. isolating the mixtures of diphenylmethane diisocyanates and polyphenyl polymethylene polyisocyanate resulting from step D.

    摘要翻译: 制备二苯基甲烷二异氰酸酯和聚苯基多亚甲基多异氰酸酯的混合物的方法,其包括以下步骤:A.使苯胺和氨基甲酸O-烷基酯反应形成N-苯基氨基甲酸酯; B.分离N-苯基氨基甲酸酯; C.在酸存在下,将N-苯基氨基甲酸酯与具有式X-CH 2 -X的甲醛或双官能化合物缩合,其中X代表RO-,RS-或ROCO基团,R表示烷基,至 形成亚甲基双(苯基氨基甲酸酯)和多亚甲基多苯基氨基甲酸酯的混合物; D.在175℃至600℃的温度下切割亚甲基双(苯基氨基甲烷)和多亚甲基多苯基氨基甲酸酯的混合物。 和E.分离由步骤D得到的二苯基甲烷二异氰酸酯和聚苯基多亚甲基多异氰酸酯的混合物。

    Preparation of .alpha.,.beta.-unsaturated nitriles
    82.
    发明授权
    Preparation of .alpha.,.beta.-unsaturated nitriles 失效
    制备α,β-不饱和腈

    公开(公告)号:US4315869A

    公开(公告)日:1982-02-16

    申请号:US143446

    申请日:1980-04-24

    IPC分类号: C07C255/34 C07C120/10

    CPC分类号: C07C255/00

    摘要: .alpha.,.beta.-Unsaturated nitriles are prepared by reacting an aldehyde with formamide in the presence of an acid and the presence or absence of a non-aromatic solvent to give an N-alkenyl-formamide, which is then passed, in the gas phase, over a dehydration catalyst at an elevated temperature.The nitriles obtainable by the process of the invention are valuable starting materials for the preparation of dyes, crop protection agents, plasticizers and drugs.

    摘要翻译: α,β-不饱和腈通过使醛与甲酰胺在酸的存在下和存在或不存在非芳族溶剂下反应制备,得到N-烯基 - 甲酰胺,然后在气相中通过, 在高温下脱水催化剂。 通过本发明的方法可获得的腈是用于制备染料,作物保护剂,增塑剂和药物的有价值的起始材料。

    Manufacture of alkylphenol compounds
    85.
    发明授权
    Manufacture of alkylphenol compounds 失效
    烷基酚化合物的制造

    公开(公告)号:US4202199A

    公开(公告)日:1980-05-13

    申请号:US839775

    申请日:1977-10-06

    CPC分类号: C07C37/14 C07C41/30 Y02P20/52

    摘要: Alkylphenol compounds are manufactured by continuous reaction of phenolic compounds with olefins in the presence of a pulverulent polystyrenesulfonic acid exchanger suspended in the reaction mixture. The products are starting materials for the manufacture of dyes, pesticides, pharmaceuticals, emulsifiers, dispersing agents, stabilizers, antioxidants, plasticizers, corrosion inhibitors, disinfectants, seed dressings, aging inhibitors, crop protection agents and scents.

    摘要翻译: 在悬浮在反应混合物中的粉状聚苯乙烯磺酸交换剂存在下,通过酚类化合物与烯烃的连续反应制备烷基酚化合物。 该产品是用于制造染料,农药,药物,乳化剂,分散剂,稳定剂,抗氧化剂,增塑剂,腐蚀抑制剂,消毒剂,种子敷料,老化抑制剂,作物保护剂和香料的起始原料。

    2,2-dialkylpentane 1,5-diisocyanates, 2,2-dialkylpentane 1,5-diurethanes
and 2,2-dialkylpentane 1,5-dicarbamoyl chlorides, and their preparation
and use
    90.
    发明授权
    2,2-dialkylpentane 1,5-diisocyanates, 2,2-dialkylpentane 1,5-diurethanes and 2,2-dialkylpentane 1,5-dicarbamoyl chlorides, and their preparation and use 失效
    2,2-二烷基戊烷1,5-二异氰酸酯,2,2-二烷基戊烷1,5-二氨基甲酸酯和2,2-二烷基戊烷1,5-二氨基酰氯,以及它们的制备和用途

    公开(公告)号:US5554787A

    公开(公告)日:1996-09-10

    申请号:US383771

    申请日:1995-02-03

    摘要: Novel 2,2 -dialkylpentane-1,5-diisocyantes, 2,2-dialkylpentane-1,5-diurethanes and 2,2-dialkylpentane-1,5-dicarbamoyl chlorides of the formula ##STR1## where R.sup.1 and R.sup.2 are identical or different linear C.sub.1 -to C.sub.12 -alkyl, branched C.sub.3 - to C.sub.12 -alkyl, branched C.sub.2 - to C.sub.12 -alkenyl or branched C.sub.4 - to C.sub.12 -alkenyl,or R.sup.1 and R.sup.2 together are alkylene having from 4 to 7 carbon atoms, which is unsubstituted or substituted by from 1 to 5 C.sub.1 - to C.sub.4 -alkyl groups, and X is NCO, NH--CO.sub.2 R.sup.3, NHCO.sub.2 R.sup.4 or NHCOCl, where R.sup.3 and R.sup.4 are identical or different and are linear C.sub.1 - to C.sub.20 -alkyl, branched C.sub.3 - to C.sub.20 -alkyl or C.sub.5 - to C.sub.12 -cycloalkyl, are described.

    摘要翻译: 新型2,2-二烷基戊烷-1,5-二异氰酸酯,2,2-二烷基戊烷-1,5-二氨基甲酸酯和2,2-二烷基戊烷-1,5-二氨基甲酰氯,其中R 1和R 2相同或 不同的直链C 1 -C 12烷基,支链C 3 -C 12烷基,支链C 2至C 12链烯基或支链C 4至C 12链烯基,或R 1和R 2一起为具有4至7个碳原子的亚烷基, 未取代或被1至5个C 1 -C 4烷基取代,X为NCO,NH-CO 2 R 3,NHCO 2 R 4或NHCOCl,其中R 3和R 4相同或不同,为直链C 1 -C 20烷基, 至C 20 - 烷基或C 5 - 至C 12 - 环烷基。