Process for the recovery of purified gamma-butyrolactone in high yield
from its crude reactor effluent
    91.
    发明授权
    Process for the recovery of purified gamma-butyrolactone in high yield from its crude reactor effluent 失效
    从其粗反应器流出物中以高产率回收纯化的γ-丁内酯的方法

    公开(公告)号:US5136058A

    公开(公告)日:1992-08-04

    申请号:US735556

    申请日:1991-07-25

    IPC分类号: C07D315/00

    CPC分类号: C07D315/00

    摘要: This invention relates to a process for the recovery of purified gamma-butyrolactone (BLO) in high yield from its crude reactor effluent containing BLO, tetrahydrofuran (THF), water, the acid-catalyzed hydrolysis product of BLO which is 4-hydroxybutyric acid (4-HBA), light and heavy organic acids, and alcohols. The process is particularly characterized by flash vaporizing a THF-free mixture of BLO, 4-HBA, water, light acids such as butyric acid and propionic acid, and alcohols so that the 4-HBA component is recyclized to form additional BLO. Heavy acids such as succinic acid and maleic acid are removed from the bottom.The total amount of BLO in the vapor stream then is fed to a distillation column where it is condensed; the water, including the water of dehydration, and light acid and alcohol impurities in the distillation are separated overhead from the BLO and removed. This procedure prevents BLO from further acid hydrolysis while the water of dehydration from 4-HBA is recovered.

    摘要翻译: 本发明涉及从其含有BLO,四氢呋喃(THF),水,作为4-羟基丁酸的BLO的酸催化的水解产物的粗反应器流出物高收率地回收纯化的γ-丁内酯(BLO)的方法 4-HBA),轻质和重质有机酸和醇。 该方法的特征在于将BLO,4-HBA,水,轻质酸如丁酸和丙酸的无THF混合物和醇闪蒸,并使4-HBA组分回收形成额外的BLO。 从底部除去重酸如琥珀酸和马来酸。 然后将蒸汽流中的BLO的总量加入到蒸馏塔中,在那里冷凝; 包括脱水的水和蒸馏中的轻酸和醇杂质的水从BLO开始分离并除去。 该方法防止BLO进一步酸解,同时回收4-HBA的脱水水。

    Activated catalyst for the vapor phase hydrogenation of maleic anhydride
to gamma-butyrolactone in high conversion and high selectivity
    92.
    发明授权
    Activated catalyst for the vapor phase hydrogenation of maleic anhydride to gamma-butyrolactone in high conversion and high selectivity 失效
    用于马来酸酐以高转化率和高选择性气相氢化为γ-丁内酯的活化催化剂

    公开(公告)号:US5122495A

    公开(公告)日:1992-06-16

    申请号:US769652

    申请日:1991-10-02

    摘要: Vapor phase catalytic hydrogenation of maleic anhydride to gamma-butyrolactone is achieved in a conversion of 95% or more and a selectivity of 80% or more during a prolonged period of production. The process uses an activated catalyst prepared by reducing a catalyst composition comprising 30-65% by weight of CuO, 18-50% by weight of ZnO and 8-22% by weight of Al.sub.2 O.sub.3, and activating the reduced catalyst composition in hydrogen at an activation temperature of at least 400.degree. C., preferably 400.degree. to 525.degree. C., and optimally about 425.degree. C. The process suitably is carried out under predetermined and advantageous process conditions, including a defined molar ratio of hydrogen to maleic anhydride in the vapor reactant stream, a selected pressure during hydrogenation, a defined feed rate space velocity, a predetermined contact time, and a suitable reaction temperature.

    摘要翻译: 在长时间的生产过程中,将马来酸酐与γ-丁内酯的气相催化氢化达到95%以上的转化率和80%以上的选择性。 该方法使用通过还原包含30-65重量%的CuO,18-50重量%的ZnO和8-22重量%的Al 2 O 3的催化剂组合物制备的活化催化剂,并且在氢气中活化还原的催化剂组合物 活化温度至少为400℃,优选为400至525℃,最佳为约425℃。该方法适合在预定和有利的工艺条件下进行,包括规定的氢与马来酸酐的摩尔比 蒸汽反应物流,氢化期间的选定压力,限定的进料速率空速,预定的接触时间和合适的反应温度。

    Radiation curable cross linkable compositions containing an aliphatic
polyfunctional alkenyl ether
    94.
    发明授权
    Radiation curable cross linkable compositions containing an aliphatic polyfunctional alkenyl ether 失效
    含有脂肪族多官能烯基醚的可辐射固化交联组合物

    公开(公告)号:US5045572A

    公开(公告)日:1991-09-03

    申请号:US470487

    申请日:1990-01-26

    摘要: This invention relates to a radiation curable crosslinkable composition containing (a) from about 0.1 to about 5 wt. % of an initiator containing at least 25% cationic initiator, (b) from about 0 to about 60 wt. % of a polymerizable vinyl ether, epoxide, vinyloxy alkyl urethane or acrylate and (c) from about 35 to about 99.9% wt. % of a polyfunctional alkenyl ether having the formulaA[(CH.sub.2 O).sub.m (Z).sub.r CH.dbd.CHR].sub.nwherein A is a carbon atom, --OCH.dbd.CHR or [C.sub.1 to C.sub.10 alkyl].sub.4-n ; R is C.sub.1 to C.sub.6 alkyl; Z is C.sub.2 to C.sub.8 alkyleneoxy; r has a value of from 0 to 6; m has a value of from 0 to 1 and at least one of r and m has a positive value; n has a value of from 1 to 4, with the proviso that m is 0 and n is one when A is --OCH.dbd.CHR, n has a value of 2 or 3 when A is [C.sub.1 to C.sub.10 alkyl].sub.4-n and n has a value of 4 when A is carbon. The invention also relates to the process of curing said composition and to a cured film on a substrate coated with the above composition.

    摘要翻译: 本发明涉及可辐射固化的可交联组合物,其包含(a)约0.1至约5wt。 %的引发剂含有至少25%的阳离子引发剂,(b)约0至约60wt。 %的可聚合乙烯基醚,环氧化物,乙烯基氧基烷基氨基甲酸酯或丙烯酸酯和(c)约35-约99.9重量% %的具有式A [(CH 2 O)m(Z)r CH = CHR] n的多官能烯基醚其中A是碳原子,-OCH = CHR或[C1-C10烷基] 4-n; R为C1至C6烷基; Z为C2〜C8亚烷氧基; r的值为0到6; m具有0至1的值,并且r和m中的至少一个具有正值; n的值为1至4,条件是m为0且当A为-OCH = CHR时n为1,当A为[C 1至C 10烷基] 4-n时,n为2或3的值,n为 当A为碳时,n的值为4。 本发明还涉及在涂覆有上述组合物的基材上固化所述组合物和固化膜的方法。

    Process for the preparation of N-vinyl lactams
    95.
    发明授权
    Process for the preparation of N-vinyl lactams 失效
    制备N-乙烯基内酰胺的方法

    公开(公告)号:US4873336A

    公开(公告)日:1989-10-10

    申请号:US183559

    申请日:1988-03-28

    CPC分类号: C07D207/267

    摘要: The invention relates to the preparation of N-vinyl lactams having the formula ##STR1## wherein n is an integer having an value of from 1 to 3 in a one-stage, non-aqueous process which comprises reacting a lactam having the formula ##STR2## with acetylene under an acetylene partial pressure of from about 25 to about 125 psig. in the presence of an inert gas diluent and a catalyst having the formula ##STR3## wherein R.sub.1, R.sub.2 and R.sub.3 are all lower alkyl or alyl or one of R.sub.1, R.sub.2 and R.sub.3 can also be hydrogen and M is a metal selected from the group of cesium, potassium, sodium and lithium.

    摘要翻译: 本发明涉及在一级非水性方法中制备具有式“IMAGE”的N-乙烯基内酰胺,其中n是1至3的整数,其包括使具有下式的内酰胺:IMAGE 在乙炔分压为约25至约125psig的范围内。 在惰性气体稀释剂和具有式“IMAGE”的催化剂存在下,其中R 1,R 2和R 3均为低级烷基或烯基,或者R 1,R 2和R 3中的一个也可以是氢,M是选自下列的金属 的铯,钾,钠和锂。

    Process of making tetrahydrofuran
    97.
    发明授权
    Process of making tetrahydrofuran 失效
    制造四氢呋喃的方法

    公开(公告)号:US4221726A

    公开(公告)日:1980-09-09

    申请号:US3868

    申请日:1979-01-16

    摘要: This invention provides a process for producing 1,4-butanediol by (1) selectively hydrogenating acrolein to a product mixture of allyl alcohol and residual acrolein in a 2:1 ratio, (2) converting the product mixture to acrolein diallyl acetal under acidic conditions, (3) selectively hydroformylating the acrolein diallyl acetal to a trialdehyde, and (4) reacting the trialdehyde under substantially neutral hydrolysis/hydrogenation conditions to yield 1,4-butanediol.Acrolein is converted into tetrahydrofuran employing the process conditions described above, except that the step (4) hydrolysis/hydrogenation reaction is conducted under acidic conditions.

    摘要翻译: 本发明提供通过(1)以2:1的比例将丙烯醛选择性氢化为烯丙醇和残留的丙烯醛的产物混合物,(2)在酸性条件下将产物混合物转化成丙烯醛二烯丙基缩醛的方法,生产1,4-丁二醇的方法 ,(3)将丙烯醛二烯丙基缩醛选择性加氢甲酰化成甲醛,和(4)在基本上中性的水解/氢化条件下使该醛反应得到1,4-丁二醇。 使用上述工艺条件将丙烯醛转化成四氢呋喃,不同之处在于步骤(4)在酸性条件下进行水解/氢化反应。

    Acrolein conversion to butanediol
    98.
    发明授权
    Acrolein conversion to butanediol 失效
    丙烯醛转化为丁二醇

    公开(公告)号:US4161616A

    公开(公告)日:1979-07-17

    申请号:US899052

    申请日:1978-04-24

    摘要: This invention provides a process for producing 1,4-butanediol by (1) selectively hydrogenating acrolein to a product mixture of allyl alcohol and residual acrolein in a 2:1 ratio, (2) converting the product mixture to acrolein diallyl acetal under acidic conditions, (3) selectively hydroformylating the acrolein diallyl acetal to a trialdehyde, and (4) reacting the trialdehyde under substantially neutral hydrolysis/hydrogenation conditions to yield 1,4-butanediol.Acrolein is converted into tetrahydrofuran employing the process conditions described above, except that the step (4) hydrolysis/hydrogenation reaction is conducted under acidic conditions.

    摘要翻译: 本发明提供通过(1)以2:1的比例将丙烯醛选择性氢化为烯丙醇和残留的丙烯醛的产物混合物,(2)在酸性条件下将产物混合物转化成丙烯醛二烯丙基缩醛的方法,生产1,4-丁二醇的方法 ,(3)将丙烯醛二烯丙基缩醛选择性加氢甲酰化成甲醛,和(4)在基本上中性的水解/氢化条件下使该醛反应得到1,4-丁二醇。

    Production of co-catalyst composition of increased abrasion resistance
    100.
    发明授权
    Production of co-catalyst composition of increased abrasion resistance 失效
    生产提高耐磨性的共催化剂组合物

    公开(公告)号:US3962137A

    公开(公告)日:1976-06-08

    申请号:US526986

    申请日:1974-11-25

    申请人: Paul D. Taylor

    发明人: Paul D. Taylor

    CPC分类号: B01J23/22 C07C51/215

    摘要: The present invention provides a process for preparing a co-catalyst composition of increased abrasion resistance for use in reactions which involve reaction conditions of high stress, e.g., vapor phase oxidations. The process comprises intimately mixing an aqueous suspension of colloidal silica particles with a water-soluble metal salt which is decomposable by heat to a metal oxide, calcining the mixture, adding a further amount of the aqueous suspension of colloidal silica particles, and drying this co-catalyst composition.