Hydrous gel
    2.
    发明授权
    Hydrous gel 失效
    水凝胶

    公开(公告)号:US4362841A

    公开(公告)日:1982-12-07

    申请号:US120829

    申请日:1980-02-12

    摘要: A hydrous gel consisting essentially of a water-in-oil dispersion cured with a crosslinking agent. The dispersion comprises a rubber component in which water is dispersed in the form of droplets in the presence of a surfactant. The rubber component is based on a liquid polyisoprene rubber having a cis-1,4 content of not less than 70% and a molecular weight of 8,000 to 120,000 or a modified polyisoprene rubber which is an adduct of the above-mentioned liquid polyisoprene rubber and maleic anhydride or a derivative thereof. The hydrous gel provides cold- and heat-retaining materials, perfume-retaining materials, adhesives for medical use, poultices and shock-absorbing materials.

    摘要翻译: 一种基本上由用交联剂固化的油包水分散体组成的含水凝胶。 分散体包含在表面活性剂存在下以水滴的形式分散水的橡胶组分。 橡胶组分基于顺式-1,4含量不小于70%,分子量为8,000至120,000的液体聚异戊二烯橡胶或作为上述液体聚异戊二烯橡胶的加合物的改性聚异戊二烯橡胶和 马来酸酐或其衍生物。 含水凝胶提供冷和保温材料,香水保持材料,医疗用粘合剂,泥敷剂和减震材料。

    Modified cis-1,4-polyisoprene rubber, a process for manufacturing the
same, and a composition containing the same
    4.
    发明授权
    Modified cis-1,4-polyisoprene rubber, a process for manufacturing the same, and a composition containing the same 失效
    改性的顺式-1,4-聚异戊二烯橡胶,其制造方法和含有它们的组合物

    公开(公告)号:US4446281A

    公开(公告)日:1984-05-01

    申请号:US379713

    申请日:1982-05-19

    CPC分类号: C08C19/36 C08C19/28

    摘要: Modified cis-1,4-polyisoprene rubber obtained by incorporating into cis-1,4-polyisoprene rubber a side chain formed by succinimide residue containing in the N position a hydrocarbon residue having at least one tertiary nitrogen atom. This rubber is excellent in green strength at ordinary room temperature, and flowability at an elevated temperature. Its vulcanizate is comparable to, or better than natural rubber in breaking strength and hardness.

    摘要翻译: 通过在顺式-1,4-聚异戊二烯橡胶中引入由在N位上含有至少一个叔氮原子的烃残基形成的琥珀酰亚胺残基形成的侧链而获得的改性顺式-1,4-聚异戊二烯橡胶。 该橡胶在一般室温下的绿色强度和高温下的流动性优异。 其硫化橡胶的抗断裂强度和硬度相当于或优于天然橡胶。

    Pressure sensitive adhesive composition
    7.
    发明授权
    Pressure sensitive adhesive composition 失效
    压敏胶组合物

    公开(公告)号:US4204046A

    公开(公告)日:1980-05-20

    申请号:US2410

    申请日:1979-01-10

    CPC分类号: C09J113/00

    摘要: A pressure-sensitive adhesive composition based on liquid rubber, a cross-linking agent therefor and a tackifier, in which the liquid rubber component is a modified low molecular weight polyisoprene which is obtainable by adding 0.03 to 7 mol % of maleic anhydride or a derivative thereof, based on each isoprene monomer unit, to a low molecular weight polyisoprene having a molecular weight in the range of 10,000 to 90,000 is useful in producing a pressure-sensitive adhesive composition having very desirable tackiness, cohesive force and bonding characteristics without use of an organic solvent or with use of only a small amount of the solvent.

    摘要翻译: 一种基于液体橡胶的粘合剂组合物,其交联剂和增粘剂,其中液体橡胶组分是改性的低分子量聚异戊二烯,其可通过加入0.03至7mol%的马来酸酐或衍生物 基于每个异戊二烯单体单元,分子量在10,000至90,000范围内的低分子量聚异戊二烯可用于制备具有非常理想的粘合性,内聚力和粘合特性的压敏粘合剂组合物,而不使用 有机溶剂或仅使用少量溶剂。

    Curable sealing composition
    8.
    发明授权
    Curable sealing composition 失效
    可密封组合物

    公开(公告)号:US4409056A

    公开(公告)日:1983-10-11

    申请号:US326052

    申请日:1981-11-30

    IPC分类号: C09K3/10 C09J3/10

    摘要: There is provided a curable sealing composition comprising a low molecular weight rubber, a curing agent and other additives as required and being characterized in that a block copolymer of isoprene and butadiene with a viscosity average molecular weight of 7,000-150,000 is used as the low molecular weight rubber. The composition has a good workability, and when cured, produces seals having excellent thermal stability, elasticity and sealing effect.

    摘要翻译: 提供了包含低分子量橡胶,固化剂和所需的其它添加剂的可固化密封组合物,其特征在于使用粘均分子量为7,000-1.5万的异戊二烯和丁二烯的嵌段共聚物作为低分子量 重量橡胶。 组合物具有良好的可加工性,并且当固化时,产生具有优异的热稳定性,弹性和密封效果的密封。

    Rubber composition
    9.
    发明授权
    Rubber composition 失效
    橡胶组成

    公开(公告)号:US4218349A

    公开(公告)日:1980-08-19

    申请号:US971042

    申请日:1978-12-19

    IPC分类号: C08L7/00 C08L9/00

    CPC分类号: C08L7/00

    摘要: A rubber composition with improved processability and capable of affording a vulcanizate with improved properties including improved adhesion to a metal surface is disclosed. The composition comprises a modified liquid polyisoprene rubber and a natural rubber. The modified liquid polyisoprene rubber is an adduct of maleic anhydride or a derivative thereof with a liquid polyisoprene rubber with a cis-1,4 content of not less than 70% and a molecular weight of 8,000 to 100,000, the amount of said maleic anhydride or said derivative being 0.1 to 15 mol % per isoprene unit in said liquid polyisoprene rubber.

    摘要翻译: 公开了一种具有改进的加工性并且能够提供具有改进的性能的硫化橡胶的橡胶组合物,包括改进的对金属表面的粘合性。 该组合物包含改性的液体聚异戊二烯橡胶和天然橡胶。 改性液体聚异戊二烯橡胶是马来酸酐或其衍生物与顺式-1,4含量不小于70%,分子量为8,000至100,000的液体聚异戊二烯橡胶的加合物,所述马来酸酐或 所述衍生物在所述液体聚异戊二烯橡胶中为每个异戊二烯单元为0.1至15摩尔%。