Polycarbonate moulding composition with improved flow and processiblity
    4.
    发明授权
    Polycarbonate moulding composition with improved flow and processiblity 失效
    聚碳酸酯模塑组合物具有改善的流动性和可加工性

    公开(公告)号:US4826918A

    公开(公告)日:1989-05-02

    申请号:US161711

    申请日:1988-02-29

    摘要: Thermoplastic molding compositions containingA. 10 to 98 parts by weight and preferably 10 to 95 parts by weight of one or more thermoplastic aromatic polycarbonates,B. 2 to 60 parts by weight and preferably 5 to 60 parts by weight of one or more graft polymers of:B.1 5 to 90 parts by weight and preferably 30 to 80 parts by weight of a mixture ofB.1.1 50 to 95 parts by weight styrene, .alpha.-methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof andB.1.2 50 to 5 parts by weight acrylonitrile, methacrylonitrile, methyl methacrylate, maleic acid anhydride, N-substituted maleic imide or mixtures thereof, orB.2 95 to 10 parts by weight and preferably 70 to 20 parts by weight of a rubber having a glass transition temperature T.sub.G of .ltoreq.10.degree. C.,C. 0 to 80 parts by weight of a thermoplastic copolymer of:C.1 50 to 95 parts by weight styrene, .alpha.-methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof andC. 2 50 to 5 parts by weight acrylonitrile, methacrylonitrile, methyl methacrylate, maleic acid anhydride, N-substituted maleic imide or mixtures thereof, the sum of the parts by weight of A.+B.+C. being 100 parts by weight andD. 0.5 to 10 parts by weight and preferably 1.0 to 5.0 parts by weight, based on 100 parts by weight of the mixture of A.+B.+C., of a hydroxyl-terminated aliphatic polycarbonate.

    摘要翻译: 含有A.10至98重量份,优选10至95重量份的一种或多种热塑性芳族聚碳酸酯的热塑性模制组合物,B 2至60重量份,优选5至60重量份的一种或多种接枝聚合物 B.1 5〜90重量份,优选30〜80重量份B.1.1 50〜95重量份苯乙烯,α-甲基苯乙烯,核取代苯乙烯,甲基丙烯酸甲酯或其混合物的混合物, B.1.2 50-5重量份丙烯腈,甲基丙烯腈,甲基丙烯酸甲酯,马来酸酐,N-取代马来酰亚胺或其混合物,或B.2 95-10重量份,优选70-20重量份橡胶 玻璃化转变温度TG <10℃,C.0-80重量份的热塑性共聚物:C.150-95重量份苯乙烯,α-甲基苯乙烯,核取代苯乙烯, 甲基丙烯酸甲酯或其混合物和C. 2 50至5份b 重量的丙烯腈,甲基丙烯腈,甲基丙烯酸甲酯,马来酸酐,N-取代的马来酰亚胺或其混合物,A + B + C的重量份之和。 相对于100重量份的由羟基封端的脂肪族聚碳酸酯的A. + B. + C的混合物,为100重量份,D为0.5〜10重量份,优选为1.0〜5.0重量份。

    Thermoplastic polyurethanes for processing in extruders and/or on
calenders
    5.
    发明授权
    Thermoplastic polyurethanes for processing in extruders and/or on calenders 失效
    用于在挤出机和/或压延机中加工的热塑性聚氨酯

    公开(公告)号:US4371684A

    公开(公告)日:1983-02-01

    申请号:US271308

    申请日:1981-05-29

    摘要: The invention is directed to a process extruding or melt roll calendering thermoplastic polyurethanes wherein the polyurethanes used are synthesized from p1 (a) one or more relatively high molecular weight substantially linear polyols having molecular weights in the range from 400 to 10,000(b) diphenyl methane and/or hexamethylene diisocyanate and(c) a mixture of 85 to 99% by weight of 1,4-butane diol and 1 to 15% by weight of at least one co-extender selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, diethylene 1,2-propane diol, 1,3-butane diol, 1,6-hexane diol, 2-ethyl-1,3-hexane diol, 2,2-dimethyl-1,3-propane diol, 1,4-bis-hydroxymethyl cyclohexane, hydroquinone-bis-hydroxyethyl ether, and mixtures thereof, the equivalent ratio of NCO groups in component (B) to the Zerewitinoff-active hydrogen atoms in components (A) and (C) being from 0.9:1 to 1.2:1 and the molar ratio of component (A) to (C) being from 1:20 to 5:1.

    摘要翻译: 本发明涉及一种挤出或熔融辊压延热塑性聚氨酯的方法,其中使用的聚氨酯由p1(a)一种或多种相对高分子量的基本上线性的多元醇合成,分子量范围为400至10,000(b)二苯基甲烷 和/或六亚甲基二异氰酸酯和(c)85-99重量%的1,4-丁二醇和1-15重量%的选自乙二醇,二甘醇的至少一种共扩链剂的混合物 三甘醇,二乙二醇1,2-丙二醇,1,3-丁二醇,1,6-己二醇,2-乙基-1,3-己二醇,2,2-二甲基-1,3-丙二醇, 1,4-双羟甲基环己烷,氢醌双羟乙基醚及其混合物,组分(B)中的NCO基与组分(A)和(C)中的Zerewitinoff活性氢原子的当量比为0.9 :1〜1.2:1,成分(A)与(C)的摩尔比为1:20〜5:1。

    Process for polymerizing isocyanates
    6.
    发明授权
    Process for polymerizing isocyanates 失效
    聚合异氰酸酯的方法

    公开(公告)号:US5770671A

    公开(公告)日:1998-06-23

    申请号:US905256

    申请日:1997-08-01

    IPC分类号: C08G18/16 C08G18/10 C08G18/22

    CPC分类号: C08G18/10

    摘要: Isocyanates are polymerized in a simple manner by polymerizing aliphatic and/or aromatic isocyanates in the presence of metallocenes at temperatures from 20.degree. to 220.degree. C., optionally subject to increased or reduced pressure and optionally in the presence of an inert organic solvent, the metallocene being used in an amount of 5 to 50,000 ppm relative to the amount of isocyanates used.

    摘要翻译: 异氰酸酯通过在金属茂存在下在20℃至220℃的温度下聚合脂族和/或芳族异氰酸酯,任选地经受增加或降低的压力以及任选在惰性有机溶剂存在下,以简单的方式聚合, 茂金属相对于所用的异氰酸酯的用量为5〜50,000ppm。

    Novel transparent polyurethane polyurea films for lamination of glazing
materials and their method of production
    8.
    发明授权
    Novel transparent polyurethane polyurea films for lamination of glazing materials and their method of production 失效
    用于层压玻璃材料的新型透明聚氨酯聚脲膜及其生产方法

    公开(公告)号:US4254176A

    公开(公告)日:1981-03-03

    申请号:US947121

    申请日:1978-09-29

    摘要: The present disclosure is concerned with a novel transparent polyurethane polyurea which is particularly suitable for lamination to glass and glasslike transparent plastics. The polymer is the reaction product of high molecular weight diols, optionally low molecular weight diols, dihydroxy carboxylic acids, diisocyanates with only aliphatically and cycloaliphatically bound isocyanates and organic diamines having aliphatically and cycloaliphatically bound primary amino groups. It has specified contents of carboxyl groups and urea groups, and it has a minimum shear modulus at both 20.degree. and 60.degree. C.The present disclosure is also concerned with a process for synthesizing such polymers. A preferred method is to react the diisocyanate and hydroxyl bearing compounds to prepare an isocyanate terminated prepolymer and chain extend with the diamine.Also discussed are the production of film from these polymers by extrusion and solution casting, the production of laminates with glass and glasslike plastics and the laminates so produced. The solution cast or extruded films can be laminated to these substrates by the application of heat and pressure.

    摘要翻译: 本公开涉及一种新型的透明聚氨酯聚脲,其特别适用于层压至玻璃和玻璃状透明塑料。 聚合物是高分子量二醇,任选的低分子量二醇,二羟基羧酸,仅具有脂肪和环状结合的异氰酸酯的二异氰酸酯和具有脂族和环烯键合的伯氨基的有机二胺的反应产物。 具体规定了羧基和脲基的含量,在20℃〜60℃都具有最小的剪切弹性模量。本发明还涉及合成这些聚合物的方法。 优选的方法是使二异氰酸酯和含羟基的化合物反应以制备异氰酸酯封端的预聚物,并且链与二胺延伸。 还讨论了通过挤出和溶液流延从这些聚合物生产膜,生产具有玻璃和玻璃状塑料的层压材料以及如此生产的层压材料。 可以通过施加热和压力将溶液流延或挤出的膜层压到这些基底上。

    Method of reverse coating textile sheets with polyurethene
    9.
    发明授权
    Method of reverse coating textile sheets with polyurethene 失效
    使用聚萘酯逆向涂布织物片的方法

    公开(公告)号:US4160686A

    公开(公告)日:1979-07-10

    申请号:US838683

    申请日:1977-10-03

    摘要: The present disclosure is concerned with an improved method of reverse coating textile sheets with storage stable polyurethane top and adhesive coats which are formulated to have improved resistance to deformation under heat and pressure. At least one of the coats is formulated from a diisocyanate, a high molecular weight dihydroxy compound and a mixture of at least one low molecular weight diol with a low molecular weight monoalkanolamine. The coatings are applied in the usual reverse coating manner, i.e. the top coat is applied to a release substrate from solution; dried; the adhesive coat is applied from solution onto the dried top coat; and the textile substrate is laminated to the adhesive coat.

    摘要翻译: 本公开涉及用储存稳定的聚氨酯顶部和粘合剂涂层逆向涂布纺织品片材的改进方法,其被配制成具有改善的耐热和压力变形的抗性。 至少一种涂层由二异氰酸酯,高分子量二羟基化合物和至少一种低分子量二醇与低分子量单烷醇胺的混合物配制而成。 以通常的反向涂布方式施加涂层,即将顶涂层从溶液施加到剥离基材上; 干 将粘合剂涂层从溶液施加到干燥的顶涂层上; 并且将织物基材层压到粘合剂涂层。

    Dental varnishes
    10.
    发明授权
    Dental varnishes 失效
    牙科清漆

    公开(公告)号:US4134935A

    公开(公告)日:1979-01-16

    申请号:US702904

    申请日:1976-07-06

    摘要: Graft copolymers or telomerisates made of polyisocyanates and a copolymer of methylmethacrylate bearing isocyanategroups or groups reactive with isocyanates can be employed as dental varnishes. They demonstrate high abrasion resistance, are quick drying and hardening, and possess excellent adhesion properties.

    摘要翻译: 可以使用由多异氰酸酯制成的接枝共聚物或调聚物和甲基丙烯酸甲酯带有异氰酸酯基团或与异氰酸酯反应的基团的共聚物作为牙科清漆。 它们表现出高耐磨性,快速干燥和硬化,并且具有优异的粘合性能。