Process for the production of stabilized polyisocyanates, the
polyisocyanates so-stabilized and their use in the production of
polyurethanes
    21.
    发明授权
    Process for the production of stabilized polyisocyanates, the polyisocyanates so-stabilized and their use in the production of polyurethanes 失效
    用于生产稳定的多异氰酸酯的方法,所述多异氰酸酯如此稳定,以及它们在生产聚氨酯中的用途

    公开(公告)号:US4483974A

    公开(公告)日:1984-11-20

    申请号:US514410

    申请日:1983-07-18

    摘要: A process for the production of solid polyisocyanates stabilized by a polymer coating and showing retarded reactivity comprising reacting(1) one or more solid polyisocyanates in particulate form, said polyisocyanates having melting points above 30.degree. C., and(2) from 0.1 to 25 equivalent percent of amine per isocyanate equivalent of an organic compound having a molecular weight of from 32 to 6000, said organic compound being selected from the group consisting of(a) di- or higher functional compounds containing 2 or more aliphatically-bound primary and/or secondary amino groups,(b) compounds containing one or more terminal --CO--, --NH--, --NH.sub.2 -- groups,(c) hydrazines, and(d) mixtures thereofsaid reaction being conducted at a temperature below the melting temperature of said solid polyisocyanate, and being conducted in the presence of(3) a liquid medium selected from the group consisting of(a) organic compounds containing one or more hydroxy groups and having molecular weights of from 62 to 6000,(b) organic compounds containing 2 or more aromatically-bound amino groups and having molecular weights of from 108 to 6000,(c) organic compounds containing 2 or more aliphatically-bound amino groups and having molecular weights of from 400 to 6000,(d) plasticizers,(e) water, and(f) mixtures thereofto form a suspension of polyadduct-coated, stabilized polyisocyanate in the liquid medium.

    摘要翻译: 一种制备通过聚合物涂层稳定并显示延迟反应的固体多异氰酸酯的方法,包括使(1)一种或多种颗粒形式的固体多异氰酸酯,所述多异氰酸酯的熔点高于30℃,和(2)0.1至25 所述有机化合物选自(a)含有2个或更多个脂族结合的伯和/或低级官能化合物的二官能或更高级的官能化合物, 或仲氨基,(b)含有一个或多个末端-CO-,-NH-,-NH 2 - 基团的化合物,(c)肼和(d)其混合物,所述反应在低于 所述固体多异氰酸酯,并且在(3)选自以下的液体介质存在下进行:(a)含有一个或多个羟基并具有分子量的有机化合物 m 62至6000,(b)含有2个或更多芳族结合氨基并且分子量为108至6000的有机化合物,(c)含有2个或更多个脂族结合的氨基并且分子量为400的有机化合物 至(6000),(d)增塑剂,(e)水和(f)它们的混合物,以形成在液体介质中形成多加合物涂覆的稳定化多异氰酸酯的悬浮液。

    KNEE BANDAGE HAVING A CORRECTIVE STRAP
    23.
    发明申请
    KNEE BANDAGE HAVING A CORRECTIVE STRAP 有权
    具有正确带的KNEE带

    公开(公告)号:US20130110023A1

    公开(公告)日:2013-05-02

    申请号:US13808749

    申请日:2011-07-08

    IPC分类号: A61F5/01

    摘要: The invention relates to a bandage for knee joints comprising an elastic textile stocking, an annular or clasp-like elastic profiled insert arranged in or at the textile stocking to encase at least the lateral (fibula-side) section of the patella of the knee joint and at least one flexible, inelastic tensile strap essentially extending in the longitudinal direction of the bandage over the knee joint.

    摘要翻译: 本发明涉及一种用于膝盖关节的绷带,其包括弹性纺织品袜子,布置在纺织品袜子中或纱布上的环形或钩状弹性成形刀片,以至少包围膝关节髌骨的外侧(腓骨侧)部分 以及至少一个柔性的非弹性拉伸带,其基本上在绷带的纵向方向上在膝关节上延伸。

    Process for the preparation of complexes of one mol of dimerized or
low-oligodimerized 4,4'-diisocyanatodiphenylmethane and two to three
mol of 4,4'-diisocyanatodiphenylmethane, corresponding complexes, and
their use for polyurethane production
    28.
    发明授权
    Process for the preparation of complexes of one mol of dimerized or low-oligodimerized 4,4'-diisocyanatodiphenylmethane and two to three mol of 4,4'-diisocyanatodiphenylmethane, corresponding complexes, and their use for polyurethane production 失效
    制备一摩尔二聚或低二聚体4,4'-二异氰酸二苯基甲烷和2至3摩尔4,4'-二异氰酸二苯基甲烷,相应络合物及其用于聚氨酯生产的配合物的方法

    公开(公告)号:US4720545A

    公开(公告)日:1988-01-19

    申请号:US829056

    申请日:1986-02-13

    CPC分类号: C07D229/00 C08G18/798

    摘要: The present invention relates to a process for the dimerization of 4,4'-diisocyanatodiphenylmethane from emulsion in apolar solvents with the formation of complexes and to the complexes obtainable for the first time by this process. The complexes consist of one mol of low molecular weight 4,4'-diisocyanato-diphenylmethane-uretdione or its low oligomers corresponding to the idealized formula (I) ##STR1## (n=0 to 0.5, where n is the average degree of oligomerization of the dimer) and 2 to 3 mol of 4,4'-diisocyanatodiphenylmethane (MDI) ##STR2## In the process according to the invention, 4,4'-diisocyanatodiphenylmethane (II) in the molten form is emulsified in apolar solvents. Dimerization is started in the presence of conventional dimerization catalysts at temperatures above the melting point of MDI, preferably up to an upper temperature limit of 50.degree. to 60.degree. C. The temperature is then lowered to

    摘要翻译: 本发明涉及一种在非极性溶剂中形成络合物的乳液中的4,4'-二异氰酸二苯基甲烷二聚作用的方法以及通过该方法首次获得的络合物。 络合物由1mol低分子量的4,4'-二异氰酸酯基 - 二苯基甲烷脲二酮或其对应于理想化的式(I)的低聚物组成。(I)(n = 0至0.5,其中n 是二聚体的平均低聚度)和2〜3mol的4,4'-二异氰酸根合二苯基甲烷(MDI)。(II)在本发明的方法中,4,4'-二异氰酸根合二苯基甲烷 熔融形式在非极性溶剂中乳化。 在常规二聚催化剂存在下,在高于MDI熔点的温度下,优选开始二聚,最好达到50-60℃的上限温度。然后将温度降至<40℃。如果需要,二聚可以 当异氰酸酯含量达到22.4%至26.9%时停止。 然后将产物在低温下,优选0℃至25℃下处理。所得的络合物作为新物质被要求。 还要求使用该复合物生产聚氨酯。

    Process for the production of solid polyisocyanates of retarded
reactivity, polymer-coated, finely divided polyisocyanates and their use

    公开(公告)号:US4667008A

    公开(公告)日:1987-05-19

    申请号:US732039

    申请日:1985-05-08

    摘要: This invention relates to the production of polymer-coated, finely divided polyisocyanates by mixing(A) solid, finely divided polyisocyanates (preferably dimeric diisocyanates or urea diisocyanates) with(B) polyisocyanates differing in composition from those mentioned under (A) (preferably (cyclo) aliphatic polyisocyanates, such as biuretized diisocyanates or trimers or NCO-prepolymers),in quantities of from 0.05 to 50 parts by weight, and preferably in quantities of from 0.2 to 25 parts by weight, of (B) per 100 parts by weight of (A). The solid polyisocyanate particles surface-modified by covering with polyisocyanates (B) and then reacted with(D) isocyanate-reactive compounds containing reactive hydrogen atoms or with compounds free from active hydrogen atoms which form polymers with isocyanates in sub-equivalent to substantially equivalent quantities (preferably 0.5 to 1.0 equivalent per NCO-equivalent), in the presence of(C) inert, weakly polar organic solvents, (for example aliphatic hydrocarbons or relatively long chain dialkyl ethers), plasticizers, polyols or aromatic polyamines.A polymer coating is formed by the reaction of (B) and (D) around the solid polyisocyanate cores (A).The present invention also relates to the polyisocyanate particles covered with polyisocyanates (B) on the surface of the solid polyisocyanates (A) and, in particular, to the foreign-polymer coated, finely particulate polyisocyanates of retarded reactivity obtained by reaction with (D).The present invention also relates to the use of the polyisocyanate-covered and, more particularly, polymer-coated polyisocyanates, optionally in suspension in polyols and/or plasticizers, for the production of polyurethanes, more particularly in one-component polyurethane reactive systems having a long shelf life and a high thickening point.

    Process for the production of polyurea-elastomers and corresponding
elastomers having an idealized segment structure
    30.
    发明授权
    Process for the production of polyurea-elastomers and corresponding elastomers having an idealized segment structure 失效
    制备具有理想化段段结构的聚脲弹性体和相应的弹性体的方法

    公开(公告)号:US4569982A

    公开(公告)日:1986-02-11

    申请号:US694572

    申请日:1985-01-24

    摘要: According to the present invention, relatively high molecular weight aliphatic and/or aromatic polyamines having molecular weights of from 400 to 8,000 (preferably from 600 to 4,000) are mixed with substantially equivalent quantities of low molecular weight, solid, finely-divided diisocyanates having a melting point of >40.degree. C., (preferably >80.degree. C.), such as phenylene diisocyanate, naphth lene-1,5-diisocyanate, dimeric toluylene-2,4-diisocyanate or the urea diisocyanate of toluylene-2,4-diisocyanate. This mixture, having a pot life of at least several minutes, is subsequently heated to a relatively high temperature, such as from 80.degree. to 200.degree. C.The products obtained have excellent elastic properties over a broad temperature range. They have an exceptionally flat modulus of elasticity curve (G') in the torsional vibration test. The hard and soft segments are markedly segregated and are thus not substantially disturbed by reciprocal interaction causing "softening".

    摘要翻译: 根据本发明,分子量为400至8,000(优选600至4,000)的相对高分子量的脂族和/或芳族多胺与基本上等量的低分子量固体,细分二异氰酸酯混合,其具有 熔点> 40℃(优选> 80℃),如亚苯基二异氰酸酯,萘-1,5-二异氰酸酯,二聚甲苯-2,4-二异氰酸酯或甲苯-2,4 二异氰酸酯。 随后将具有至少几分钟的适用期的混合物加热到相对较高的温度,例如80℃至200℃。所得产物在宽的温度范围内具有优异的弹性。 在扭转振动试验中,它们具有非常平坦的弹性模量曲线(G')。 硬段和软段显着分离,因此基本上不会受到引起“软化”的相互作用的相互干扰。