Process for the preparation of polyurethane plastics using
dianhydro-hexite diols
    2.
    发明授权
    Process for the preparation of polyurethane plastics using dianhydro-hexite diols 失效
    使用二氢 - 己二醇二醇制备聚氨酯塑料的方法

    公开(公告)号:US4383051A

    公开(公告)日:1983-05-10

    申请号:US357118

    申请日:1982-03-11

    摘要: A process for the preparation of homogeneous and cellular polyurethane plastics by the reaction of(a) organic polyisocyanates;(b) compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having molecular weights of from 400 to 10,000;(c) chain extenders, and, optionally, additional(d) short-chained compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having a molar mass of from 32 to 400, as well as, optionally,(e) catalysts, blowing agents and other known additives,is described, which is characterized in that 1,4-3,6-dianhydro-hexites, preferably 1,4-3,6-dianhydro-D-sorbitol and/or 1,4-3,6-dianhydro-D-mannitol, optionally mixed with lower molecular weight compounds, preferably with polyols having a molecular weight of from 62 to 400, particularly preferably butane diol-1,4 are used as the chain extenders. The new chain extenders produce high quality elastomers and foams.

    摘要翻译: 通过(a)有机多异氰酸酯的反应制备均匀和细胞聚氨酯塑料的方法; (b)含有至少2个Zerewitinoff-活性氢原子并且分子量为400至10,000的化合物; (c)扩链剂,以及任选地,含有至少2个Zerewitinoff-活性氢原子并且具有32-400摩尔质量的另外的(d)短链化合物,以及任选的(e)催化剂,吹制 其特征在于1,4-3,6-二脱水 - 己酸,优选1,4-3,6-二脱氢-D-山梨糖醇和/或1,4-3,6 - 二水-D-甘露糖醇,任选地与较低分子量的化合物混合,优选使用分子量为62至400的多元醇,特别优选丁二醇-1,4作为扩链剂。 新的增链剂生产高品质的弹性体和泡沫。

    Process for the preparation of polyurethane elastomers using diols of
the anhydro-tetritol series
    3.
    发明授权
    Process for the preparation of polyurethane elastomers using diols of the anhydro-tetritol series 失效
    使用脱水四氢呋喃系列的二醇制备聚氨酯弹性体的方法

    公开(公告)号:US4476253A

    公开(公告)日:1984-10-09

    申请号:US570045

    申请日:1984-01-11

    IPC分类号: C08G18/10 C08G18/32 C08G18/14

    CPC分类号: C08G18/3218 C08G18/10

    摘要: Polyurethane elastomers are made by reacting organic polyisocyanates with compounds having at least two groups containing isocyanate-reactive hydrogen atoms and a molecular weight of from 400 to 10,000 and a 1,4-monoanhydro-tetritol in accordance with techniques known to those in the art. Known chain-lengthening agents, auxiliaries and additives may be included in the reaction mixture. The reaction mixtures employed in the process of the present invention have a longer pot life than prior art reaction mixtures. The elastomers produced by this process are shrink stable.

    摘要翻译: 根据本领域已知的技术,聚氨酯弹性体是通过有机多异氰酸酯与具有至少两个含异氰酸酯反应性氢原子和分子量为400至10,000的化合物和1,4-单羟基 - 氢化四醇反应制备的。 已知的增链剂,助剂和添加剂可以包括在反应混合物中。 在本发明方法中使用的反应混合物具有比现有技术的反应混合物更长的适用期。 由该方法生产的弹性体收缩稳定。

    Process for the preparation of 1,4-3,6-dianhydro-hexitols
    4.
    发明授权
    Process for the preparation of 1,4-3,6-dianhydro-hexitols 失效
    制备1,4-3,6-二氢 - 己醇的方法

    公开(公告)号:US4408061A

    公开(公告)日:1983-10-04

    申请号:US357353

    申请日:1982-03-11

    IPC分类号: C07D493/04

    CPC分类号: C07D493/04

    摘要: A process for the preparation of 1,4-3,6-dianhydro-hexitols from hexitols by elimination of water is described, characterized in that gaseous hydrogen halide is used as the acid dehydrating agent optionally with carboxylic acids, carboxylic acid halides and/or carboxylic acid anhydrides in quantities of up to 600 mol percent, based on the hexitols, as cocatalysts. The reaction is carried out in the absence of water and organic solvents, preferably using gaseous hydrogen chloride, temperatures of up to 300.degree. C. and pressures of up to 250 bar. Very high yields are obtained after working up of the product by distillation or extraction.

    摘要翻译: 描述了通过除去水从己醇制备1,4-3,6-二脱氢 - 己醇的方法,其特征在于,使用气态卤化氢作为酸脱水剂,任选地与羧酸,羧酸卤化物和/或 羧酸酐,其量为至多600摩尔%,基于己二醇,作为助催化剂。 反应在没有水和有机溶剂的情况下进行,优选使用气态氯化氢,温度高达300℃,压力高达250巴。 通过蒸馏或萃取处理产物后可获得非常高的产率。

    Process for the production of dianhydrohexitol mixtures and the
production of polymers from such mixtures
    5.
    发明授权
    Process for the production of dianhydrohexitol mixtures and the production of polymers from such mixtures 失效
    用于制备二羟基己糖醇混合物的方法和由这些混合物生产聚合物

    公开(公告)号:US4564645A

    公开(公告)日:1986-01-14

    申请号:US689357

    申请日:1985-01-07

    CPC分类号: C07D493/04 C08G18/3218

    摘要: Liquid dianhydrohexitol mixtures are prepared from diacylation products of hexitols and compounds such as organic carboxylic acids, carboxylic acid anhydrides, carboxylic acid halides, ketene and carbonic acid ester derivatives. More specifically, such diacylation products are simultaneously dehydrated and isomerized by subjecting them to a temperature of at least 130.degree. C. in the presence of a strong acid to yield diacylated dianhydro-hexitol isomer mixtures. These isomer mixtures are then converted to dianhydro-hexitol isomer mixtures by hydrolysis or transesterification. Suitable strong acids include proton acids, Lewis acids and heterogeneous acid catalysts (e.g., ion exchange resins). The mixtures of the present invention are characterized by a minimal tendency towards crystallization. These mixtures are particularly useful as chain extending agents in the production of polyurethanes.

    摘要翻译: 液体二脱水己糖醇混合物由己醇的二酰化产物和有机羧酸,羧酸酐,羧酸卤化物,乙烯酮和碳酸酯衍生物等化合物制备。 更具体地说,这样的二酰化产物通过在强酸存在下使其至少130℃的温度同时进行脱水和异构化,得到二酰化二脱氢 - 己糖醇异构体混合物。 然后通过水解或酯交换将这些异构体混合物转化为二脱氢己糖醇异构体混合物。 合适的强酸包括质子酸,路易斯酸和多相酸催化剂(如离子交换树脂)。 本发明的混合物的特征在于最小的结晶倾向。 这些混合物特别可用作聚氨酯生产中的扩链剂。

    Process for the production of dianhydrohexitol mixtures and liquid
mixture of dianhydrohexitols
    6.
    发明授权
    Process for the production of dianhydrohexitol mixtures and liquid mixture of dianhydrohexitols 失效
    二脱水己醇混合物的生产方法和二脱水己醇的液体混合物

    公开(公告)号:US4506086A

    公开(公告)日:1985-03-19

    申请号:US515411

    申请日:1983-07-20

    IPC分类号: C07D493/04 C08G18/32

    CPC分类号: C07D493/04 C08G18/3218

    摘要: Liquid dianhydrohexitol mixtures are prepared from diacylation products of hexitols and compounds such as organic carboxylic acids, carboxylic acid anhydrides, carboxylic acid halides, ketene and carbonic acid ester derivatives. More specifically, such diacylation products are simultaneously dehydrated and isomerized by subjecting them to a temperature of at least 130.degree. C. in the presence of a strong acid to yield diacylated dianhydrohexitol isomer mixtures. These isomer mixtures are then converted to dianhydrohexitol isomer mixtures by hydrolysis or transesterification. Suitable strong acids include proton acids, Lewis acids and heterogeneous acid catalysts (e.g., ion exchange resins). The mixtures of the present invention are characterized by a minimal tendency towards crystallization. These mixtures are particularly useful as chain extending agents in the production of polyurethanes.

    摘要翻译: 液体二脱水己糖醇混合物由己醇的二酰化产物和有机羧酸,羧酸酐,羧酸卤化物,乙烯酮和碳酸酯衍生物等化合物制备。 更具体地说,这样的二酰化产物通过在强酸存在下经受至少130℃的温度同时进行脱水和异构化,得到二酰基二脱水己糖异构体混合物。 然后通过水解或酯交换将这些异构体混合物转化成二羟基己糖异构体混合物。 合适的强酸包括质子酸,路易斯酸和多相酸催化剂(如离子交换树脂)。 本发明的混合物的特征在于最小的结晶倾向。 这些混合物特别可用作聚氨酯生产中的扩链剂。

    Polyamines and processes for the production of such polyamines and of
polyurethane plastics therefrom
    8.
    发明授权
    Polyamines and processes for the production of such polyamines and of polyurethane plastics therefrom 失效
    用于生产这种多胺和聚氨酯塑料的多胺和方法

    公开(公告)号:US4386218A

    公开(公告)日:1983-05-31

    申请号:US308326

    申请日:1981-10-05

    摘要: A compound having a terminal isocyanate group is hydrolyzed to produce a polyamine having a urethane and/or a urea and/or a biuret group. More particularly, a carbamate is made by mixing an isocyanate prepolymer having urethane and/or urea and/or biuret groups present with aqueous base solutions at a temperature of from 0.degree. to 0.degree. C. and in quantities such that the equivalent ratio of hydroxyl to isocyanate groups is between from 0.3:1 to .gtoreq.1.01 to 1. The carbamate is then treated with an acid ion exchanger to form an amine. The amine is then removed from any other material which may be present. A preferred polyamine thus-produced corresponds to the general formula: ##STR1## in which each R radical may represent a divalent straight or branched-chain aliphatic radical; a divalent cycloaliphatic radical; a 4,4'- and/or a 2,4'-dicyclohexylmethane radical; or a 2,4- and/or 2,6-methyl cyclohexane radical. Such an amine may be reacted with a polyisocyanate and optionally with other known additives to form a polyurethane plastic or foam.

    摘要翻译: 将具有末端异氰酸酯基的化合物水解以制备具有氨基甲酸酯和/或脲和/或缩二脲基的多胺。 更具体地,氨基甲酸酯是通过在0℃至0℃的温度下混合存在有氨基甲酸酯和/或脲和/或缩二脲基的异氰酸酯预聚物和/或缩二脲基与碱水溶液形成的,其量使得羟基的当量比 到异氰酸酯基团之间的比例为0.3:1至> / = 1.01:1。然后用酸式离子交换剂处理氨基甲酸酯以形成胺。 然后将胺从可能存在的任何其它材料中除去。 如此制备的优选的多胺对应于通式:其中每个R基团可以表示二价直链或支链脂族基团; 二价脂环族基团; 4,4'-和/或2,4'-二环己基甲基基团; 或2,4-和/或2,6-甲基环己烷基。 这样的胺可以与多异氰酸酯和任选地与其它已知的添加剂反应以形成聚氨酯塑料或泡沫。

    Process for the preparation of polyurethane casting elastomers
    9.
    发明授权
    Process for the preparation of polyurethane casting elastomers 失效
    制备聚氨酯浇铸弹性体的方法

    公开(公告)号:US4263423A

    公开(公告)日:1981-04-21

    申请号:US057936

    申请日:1979-07-16

    CPC分类号: C08G18/72 C08G18/22

    摘要: The instant invention is directed to a process for the production of a light fast, transparent polyurethane elastomer comprising reacting:(A) from 90 to 50% by weight, based on the polyurethane solids content, of a compound having a molecular weight of from 400 to 10,000 which has at least two Zerewitinoff active hydrogen atoms;(B) from 50 to 10% by weight, based on the polyurethane solids content, of an aliphatic and/or alicyclic polyisocyanate; and(C) from 0 to 20% by weight, based on the polyurethane solids content, of a chain-lengthening agent having a molecular weight of from 60 to 400; in the presence of:(D) catalysts for the isocyanate polyaddition reaction, the improvement wherein said catalysts, component (D), is a catalyst combination of:(a) an alkali metal hydroxide and/or alkaline earth metal hydroxide; and(b) an organometallic compound selected from the group consisting of the acetyl acetonate of iron, C.sub.1 -C.sub.8 alcoholates, phenolates, enolates and/or acetyl acetonates of metals of the 4th main group or sulfur-containing compounds of metals of the 4th main group, in which compounds the sulfur is directly attached to the metal atom.

    摘要翻译: 本发明涉及一种生产轻质,透明的聚氨酯弹性体的方法,包括使(A)基于聚氨酯固体含量的90至50重量%的分子量为400的化合物 至10,000具有至少两个Zerewitinoff活性氢原子; (B)基于聚氨酯固体含量为50至10重量%的脂族和/或脂环族多异氰酸酯; 和(C)基于聚氨酯固体含量为0至20重量%的分子量为60至400的链延长剂; 在(D)用于异氰酸酯加聚反应的催化剂的存在下,其中所述催化剂组分(D)是以下的催化剂组合:(a)碱金属氢氧化物和/或碱土金属氢氧化物; 和(b)选自第四主要金属的第四主要金属的第四主要金属的乙酰丙酮酸铁,C 1 -C 8醇盐,酚盐,烯醇化物和/或乙酰丙酮化物的有机金属化合物或第四主要金属的含硫化合物 基团,其中化合物硫直接连接到金属原子上。