Polyurethane plastics containing thio groups
    1.
    发明授权
    Polyurethane plastics containing thio groups 失效
    含硫基的聚氨酯塑料

    公开(公告)号:US4254229A

    公开(公告)日:1981-03-03

    申请号:US106976

    申请日:1979-12-26

    摘要: The instant invention is directed to polyurethane plastics which may be cellular, produced by reaction of polyisocyanates with relatively high molecular weight polyhydroxyl compounds and, optionally, low molecular weight polyhydroxyl compounds, and diamines, said polyurethane plastic containing structural units corresponding to the general formula ##STR1## in which R' represents a straight or branched divalent aliphatic, cycloaliphatic or aromatic radicals containing from 2 to 20 carbon atoms andR" represents hydrogen, a straight or branched alkyl radical containing from 1 to 6 carbon atoms, an aryl radical containing from 6 to 15 carbon atoms, a cycloalkyl radical containing from 4 to 12 carbon atoms, halogen, --NO.sub.2, --CN, --OR'" or a radical ##STR2## where R"' represents a straight or branched alkyl radical containing from 1 to 6 carbon atoms.

    摘要翻译: 本发明涉及可通过多异氰酸酯与相对高分子量多羟基化合物和任选的低分子量多羟基化合物和二胺的反应制备的聚氨酯塑料,所述聚氨酯塑料含有对应于通式 IMAGE>其中R'表示含有2至20个碳原子的直链或支链二价脂族,脂环族或芳族基团,R“表示氢,含有1至6个碳原子的直链或支链烷基,含有 6至15个碳原子的环烷基,含有4至12个碳原子的环烷基,卤素,-NO 2,-CN,-OR“或其中R”'表示含有直链或支链烷基的基团 1至6个碳原子。

    Process for the preparation of polyurethane casting elastomers
    3.
    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。

    Process for the preparation of polyurethane elastomers
    5.
    发明授权
    Process for the preparation of polyurethane elastomers 失效
    制备聚氨酯弹性体的方法

    公开(公告)号:US4587275A

    公开(公告)日:1986-05-06

    申请号:US429707

    申请日:1982-09-30

    CPC分类号: C08G18/3861 C08G18/10

    摘要: Polyurethane urea elastomers are produced by reacting polyisocyanates with compounds containing at least two isocyanate reactive hydrogen atoms having a molecular weight of 400 to 10,000 and mononuclear or dinuclear aromatic diamines. The aromatic diamines must have at least one sulfonamide group as a substituent on at least one of their aromatic rings. Known chain lengthening agents, activators, blowing agents, auxiliary agents and additives may also be included in the reaction mixture.Polyurethane elastomers produced by this process have excellent mechanical properties. In particular, such elastomers are soft yet have high tear propagation resistance.

    摘要翻译: 聚氨酯脲弹性体是通过使多异氰酸酯与分子量为400至10,000的至少两个异氰酸酯反应性氢原子和单核或双核芳族二胺的化合物反应来制备的。 芳族二胺必须在至少一个它们的芳环上具有至少一个磺酰胺基作为取代基。 已知的增链剂,活化剂,发泡剂,辅助剂和添加剂也可以包括在反应混合物中。 通过该方法生产的聚氨酯弹性体具有优异的机械性能。 特别地,这种弹性体是柔软的但具有高的抗撕裂传播性。

    Process for the production of elastic, optionally cellular, polyurethane
ureas
    7.
    发明授权
    Process for the production of elastic, optionally cellular, polyurethane ureas 失效
    用于生产弹性,任选细胞的聚氨酯脲的方法

    公开(公告)号:US4294934A

    公开(公告)日:1981-10-13

    申请号:US164752

    申请日:1980-06-30

    摘要: The instant invention is directed to a process for the production of polyurethane urea elastomers having a gross density of more than 200 kg/m.sup.3 comprising: casting a reaction mixture of(A) an isocyanate prepolymer produced from(a) 1 mole of a compound containing at least 2 Zerewitinoff-active hydrogen atoms and having a molecular weight of from 400 to 10,000 and(b) 2 to 10 moles of diisocyanatodiphenylmethane,(B) an aromatic diamine, and(C) 0 to 50 mole percent, based on component (B), of a polyol containing primary hydroxyl groups and having a molecular weight of from 62 to 6000, the equivalent ratio between component (A) and components (B) + (C) amounting to between 0.9:1 and 1.3:1,into a mold, hardening the reaction mixture in the mold and subsequently removing it from the mold, the improvement wherein said isocyanate prepolymer (A) has been produced using an isomer mixture comprising:from 15 to 80 mole percent of 2,4'-diisocyanatodiphenylmethane,from 20 to 85 mole percent of 4,4'-diisocyanatodiphenylmethane, andfrom 0 to 20 mole percent of 2,2'-diisocyanatodiphenylmethane.

    摘要翻译: 本发明涉及生产总密度大于200kg / m 3的聚氨酯脲弹性体的方法,包括:浇铸(A)异氰酸酯预聚物的反应混合物,该异氰酸酯预聚物由(a)1摩尔含有 至少2个Zerewitinoff活性氢原子,分子量为400至10,000,和(b)2至10摩尔二异氰酸二苯基甲烷,(B)芳族二胺和(C)0至50摩尔%,基于组分( B),含有伯羟基并且分子量为62至6000的多元醇,组分(A)和组分(B)+(C)之间的当量比为0.9:1至1.3:1,转化为 模具,使模具中的反应混合物硬化,随后将其从模具中除去,改进之处在于所述异氰酸酯预聚物(A)已经使用异构体混合物制备,所述异构体混合物包含:15至80摩尔%的2,4'-二异氰酸根合二苯基甲烷, 20至85摩尔%o f 4,4'-二异氰酸二苯基甲烷和0至20摩尔%的2,2'-二异氰酸二苯基甲烷。

    Process for the production of molded foams
    8.
    发明授权
    Process for the production of molded foams 失效
    生产模制泡沫的方法

    公开(公告)号:US4263408A

    公开(公告)日:1981-04-21

    申请号:US57935

    申请日:1979-07-16

    摘要: The instant invention is directed to a process for the production of molded foams having a compact surface and cellular core and an integral density distribution over the cross-section of the body, comprising reacting(A) polyisocyanates, and(B) relatively high molecular and/or low molecular compounds having an average of at least two isocyanate-reactive hydrogen atoms in the presence of:(C) catalysts for the isocyanate polyaddition reaction and(D) blowing agents and optionally other known additives, in a closed mold under the conditions of foaming inside molds, the improvement wherein said polyisocyanates are aliphatic and/or alicyclic polyisocyanates and said catalysts are catalyst combinations of:(i) an alkali metal and/or alkaline earth metal hydroxide and(ii) a metal compound, the metal compound being the acetylacetonate of iron, C.sub.1 -C.sub.8 alcoholates, phenolates, enolates and/or acetylacetonates of metals of the 4th Main Group or sulfur compounds of metals of the 4th Main Group of the Periodic System of Elements in which the sulfur is directly attached to the metal atom.

    摘要翻译: 本发明涉及一种生产具有紧凑的表面和多孔芯的模制泡沫的方法以及在主体的横截面上的整体密度分布,包括使(A)多异氰酸酯与(B)相对高分子和 /或在以下情况下平均具有至少两个异氰酸酯反应性氢原子的低分子化合物:(C)用于异氰酸酯加聚反应的催化剂和(D)发泡剂和任选的其它已知添加剂,在封闭模具中在条件 在模具中发泡的改进,其中所述多异氰酸酯是脂族和/或脂环族多异氰酸酯,所述催化剂是以下催化剂组合:(i)碱金属和/或碱土金属氢氧化物和(ii)金属化合物,金属化合物为 第四主要金属的金属的乙酰丙酮化物,C1-C8醇盐,酚盐,烯醇化物和/或乙酰丙酮化物或第四主族金属的硫化合物 的元素周期系统,其中硫直接连接到金属原子上。