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    • 5. 发明授权
    • Process for the production of dianhydrohexitol mixtures and the
production of polymers from such mixtures
    • 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
    • US4564645A
    • 1986-01-14
    • US689357
    • 1985-01-07
    • Herbert SalzburgManfred HajekHolger Meyborg
    • Herbert SalzburgManfred HajekHolger Meyborg
    • C07D493/04C08G18/32C08G18/30
    • C07D493/04C08G18/3218
    • 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.
    • 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。
    • 6. 发明授权
    • Process for the production of dianhydrohexitol mixtures and liquid
mixture of dianhydrohexitols
    • 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
    • US4506086A
    • 1985-03-19
    • US515411
    • 1983-07-20
    • Herbert SalzburgManfred HajekHolger Meyborg
    • Herbert SalzburgManfred HajekHolger Meyborg
    • C07D493/04C08G18/32
    • C07D493/04C08G18/3218
    • 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.
    • 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。
    • 9. 发明授权
    • Process for the preparation of polyurethane casting elastomers
    • 制备聚氨酯浇铸弹性体的方法
    • US4263423A
    • 1981-04-21
    • US057936
    • 1979-07-16
    • Jurgen SchwindtHolger MeyborgGerhard GroglerKlaus Recker
    • Jurgen SchwindtHolger MeyborgGerhard GroglerKlaus Recker
    • C08G18/00C08G18/22C08G18/72C08G18/73C08G18/16C08G18/24C08G18/26
    • C08G18/72C08G18/22
    • 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.
    • 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。