Polyurethane prepolymer comprising the reaction product of at least two
active hydrogen containing substances with polyisocyanate
    2.
    发明授权
    Polyurethane prepolymer comprising the reaction product of at least two active hydrogen containing substances with polyisocyanate 失效
    聚氨酯预聚物包含至少两种含活性氢物质与多异氰酸酯的反应产物

    公开(公告)号:US4604445A

    公开(公告)日:1986-08-05

    申请号:US724693

    申请日:1985-04-18

    CPC分类号: C08G18/4812 C08G18/12

    摘要: A process and urethane composition for making urethane prepolymers from a polyisocyanate and blends of two or more urethane intermediates. The prepolymers so produced when cured have improved physical properties such as high low strain modulus and tensile strength relative to cured polyurethanes prepared from a mixture of prepolymers prepared by reacting a polyisocyanate with the component intermediates and subsequently blending the prepolymers.

    摘要翻译: 用于由多异氰酸酯制备氨基甲酸酯预聚物的方法和聚氨酯组合物以及两种或更多种聚氨酯中间体的共混物。 在固化时所制备的预聚物相对于由多异氰酸酯与组分中间体反应制备并随后共混预聚物制备的预聚物的混合物制备的固化聚氨酯,具有改善的物理性能,例如高的低应变模量和拉伸强度。

    Urethane compositions
    3.
    发明授权
    Urethane compositions 失效
    聚氨酯组合物

    公开(公告)号:US4579928A

    公开(公告)日:1986-04-01

    申请号:US724691

    申请日:1985-04-18

    IPC分类号: C08G18/00 C08G18/10 C08G18/12

    CPC分类号: C08G18/10

    摘要: Urethane elastomers are produced by initially adding at least one incremental amount of a curing agent to a urethane prepolymer, having free polyisocyanate therein. Generally, free polyisocyanate-curing agent adducts are precipitated. Subsequently, the remaining amount of curing agent is added. Chain extension, accordingly, is favored which produces hard segment domains more evenly distributed in the polymer chain and imparts improved physical properties such as hardness, tear strength and high-low strain modulus.

    摘要翻译: 氨基甲酸酯弹性体是通过向其中含有游离多异氰酸酯的氨基甲酸酯预聚物中首先加入至少一种增量的固化剂来制备的。 通常,游离的多异氰酸酯 - 固化剂加合物沉淀。 随后,加入剩余量的固化剂。 因此,延伸链有利于产生更均匀地分布在聚合物链中的硬链段,并赋予改善的物理性质,例如硬度,撕裂强度和高 - 低应变模量。

    Accelerated rubber composition
    4.
    发明授权
    Accelerated rubber composition 失效
    加速橡胶组成

    公开(公告)号:US4216126A

    公开(公告)日:1980-08-05

    申请号:US946911

    申请日:1978-09-28

    申请人: Edward L. Kay

    发明人: Edward L. Kay

    CPC分类号: C08K5/5398

    摘要: The vulcanization rate of rubber stock compounded for curing is increased by using in the stock for the cure an accelerator of certain amine-substituted esters of phosphorodithioic acid.

    摘要翻译: 通过在原料中使用硫化二硫代酸的某些胺取代的酯的促进剂来增加用于固化的橡胶原料的硫化速率。

    Rubber/accelerator composition
    5.
    发明授权
    Rubber/accelerator composition 失效
    橡胶/促进剂组合物

    公开(公告)号:US4169084A

    公开(公告)日:1979-09-25

    申请号:US946881

    申请日:1978-09-28

    申请人: Edward L. Kay

    发明人: Edward L. Kay

    CPC分类号: C08K5/5398 C08K5/51

    摘要: The vulcanization rate of rubber stock compounded for curing is increased by using in the stock for the cure an accelerator of certain esters of phosphorodiothioic acid.

    摘要翻译: 通过在原料中使用某些二硫代磷酸酯的促进剂来增加用于固化的橡胶原料的硫化速率。

    Polyurethanes containing amine salts
    7.
    发明授权
    Polyurethanes containing amine salts 失效
    含有胺盐的聚氨酯

    公开(公告)号:US4742100A

    公开(公告)日:1988-05-03

    申请号:US26421

    申请日:1987-03-16

    IPC分类号: C08G18/38 C08K5/32 C08L75/00

    CPC分类号: C08G18/3819 C08K5/32

    摘要: Salts generally act as reinforcing compounds in polyurethane compositions. Salts containing a free-amine function generally increase the low-strain moduli more than salts which lack such free-amine functions or are neutral. The salts are generally formed by reacting a basic nitrogen function compound such as a monoamine or a diamine with a mono or a dicarboxylic acid.

    摘要翻译: 盐通常作为聚氨酯组合物中的增强化合物。 含有游离胺官能团的盐通常比缺乏这种游离胺官能团或中性的盐增加低应变模量。 盐通常通过使碱性氮官能化合物如单胺或二胺与单羧酸或二羧酸反应而形成。

    Fine grinding guayule shrub-solvent slurry
    8.
    发明授权
    Fine grinding guayule shrub-solvent slurry 失效
    精细研磨瓜耳灌注溶剂浆料

    公开(公告)号:US4739037A

    公开(公告)日:1988-04-19

    申请号:US607478

    申请日:1984-05-07

    IPC分类号: C09F1/00 C08C4/00 C08C2/02

    CPC分类号: C09F1/00 Y10S528/93

    摘要: A process for achieving a high yield of rubber and/or resin from rubber containing plants such as guayule plants by crushing the plants, forming a slurry with a solvent and fine grinding said slurry with a high shear mixer. The time required by the process is very short in comparison with prior art techniques.

    摘要翻译: 一种通过粉碎植物,用溶剂形成浆料并用高剪切混合器细粉碎所述浆料从橡胶包装植物例如果胶植物获得高产量的橡胶和/或树脂的方法。 与现有技术相比,该方法所需的时间非常短。

    Process for extracting rubber and by-products from guayule and
guayule-like shrubs
    9.
    发明授权
    Process for extracting rubber and by-products from guayule and guayule-like shrubs 失效
    从桂树和桂树状灌木中提取橡胶和副产物的方法

    公开(公告)号:US4526959A

    公开(公告)日:1985-07-02

    申请号:US469872

    申请日:1983-02-25

    IPC分类号: B29D23/24 C08J11/06 C08C4/00

    摘要: Rubber, hydrocarbons, i.e., resins, and other useful by-products are extracted from shrubs such as guayule and guayule-like shrubs by a procedure wherein the shrub, after being comminuted, is processed in an aqueous and/or a non-aqueous system. An optional water treatment step can be used to remove water solubles and/or facilitate processing and achieve increased yield of desired by-products.

    摘要翻译: 橡胶,碳氢化合物,即树脂和其它有用的副产物通过其中灌浆在水和/或非水系统中被处理之后的方法从诸如瓜耳和果胶状灌木的灌木中提取 。 可以使用任选的水处理步骤来除去水溶性物质和/或促进加工并获得所需副产物的增加的产率。

    Aqueous storage systems for storage of ground guayule plant material
    10.
    发明授权
    Aqueous storage systems for storage of ground guayule plant material 失效
    用于储存地面植物材料的水性储存系统

    公开(公告)号:US4424171A

    公开(公告)日:1984-01-03

    申请号:US355078

    申请日:1982-03-05

    IPC分类号: A01N3/00 C08L7/02

    CPC分类号: A01N3/00

    摘要: Guayule plant material can be stored in an aqueous system comprising (a) communited guayule plant material; (b) water and (c) an odor inhibitor. Typical inhibitors include protanic acids, acid salts, metal oxides and metal hydroxides. These storage systems permit efficient operation of guayule processing facilities while minimizing odors often developed in stored plant material.

    摘要翻译: Guayule植物材料可以储存在含有(a)共同植物植物材料的水系统中; (b)水和(c)气味抑制剂。 典型的抑制剂包括普遍酸,酸式盐,金属氧化物和金属氢氧化物。 这些存储系统允许guayule处理设施的有效操作,同时最小化在储存的植物材料中经常开发的气味。