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    • 32. 发明授权
    • Thermoplastic resin porous membrane having an increased strength factor
    • 具有增加强度因子的热塑性树脂多孔膜
    • US4613441A
    • 1986-09-23
    • US486915
    • 1983-04-20
    • Mitsuo KohnoShigeki KatayamaKazuo Matsuda
    • Mitsuo KohnoShigeki KatayamaKazuo Matsuda
    • B29C59/00B01D67/00B01D69/02B29C55/00B29C67/20C08J5/18C08J5/22C08J9/00H01M2/14B01D13/04
    • B01D67/0027B01D69/02H01M2/14
    • A porous membrane formed of a thermoplastic resin having a critical surface tension of not higher than 35 dyn/cm and having a three-dimensional network structure is provided. Communicating pores having a porosity of at least 60% and an average pore diameter of 0.1 to 2.0 microns are formed in the porous membrane. The strength factor F defined by the following formula is at least 1 as measured in any direction: F=A/[B(1-.alpha.)], wherein A is the tensile strength at break of the membrane, B is the tensile strength at break of a non-porous film formed of the same resin and .alpha. is the porosity fraction of the membrane. The thickness of the porous membrane is 5 to 500 microns. The porous membrane is prepared by a process wherein a porous membrane formed of a thermoplastic resin having a critical surface tension of not higher than 35 dyn/cm and having a three-dimensional network structure including communicating pores having an average pore diameter of 0.05 to 1 micron with a porosity of 30 to 70%, is subjected to a space drawing operation in at least one direction at a temperature between 50.degree. C. lower than the melting or softening point of the thermoplastic resin and 5.degree. C. lower than the melting or softening point of the thermoplastic resin.
    • 提供了具有临界表面张力不高于35dyn / cm并具有三维网状结构的由热塑性树脂形成的多孔膜。 在多孔膜中形成孔隙率为至少60%,平均孔径为0.1〜2.0微米的孔。 由以下公式定义的强度因子F至少为1,如在任何方向测量的:F = A / [B(1-α)],其中A是膜断裂时的拉伸强度,B是在 由相同树脂和α形成的无孔膜的断裂是膜的孔隙率分数。 多孔膜的厚度为5至500微米。 多孔膜通过以下方法制备,其中由具有临界表面张力不高于35dyn / cm的热塑性树脂形成的多孔膜,并且具有包括平均孔径为0.05至1的连通孔的三维网状结构 微孔,孔隙率为30〜70%,在比热塑性树脂的熔点或软化点低50℃以下的温度下,在至少一个方向进行空间拉伸操作,低于熔融 或软化点。
    • 38. 发明授权
    • Process for preparation of amphoteric resinous aqueous emulsions
    • 两性树脂水性乳液的制备方法
    • US4008196A
    • 1977-02-15
    • US605018
    • 1975-08-15
    • Kazuo MatsudaHidemasa OhmuraYukihisa Niimi
    • Kazuo MatsudaHidemasa OhmuraYukihisa Niimi
    • D06M15/564C08G18/00C08G18/08C08G18/10C08G18/71C08G18/83D06M15/52
    • C08G18/831C08G18/0833C08G18/10C08G18/71
    • A process for the preparation of amphoteric resinous aqueous emulsions useful for the treatment of fiber-containing products, comprising reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine to form a polyurethane-urea-polyamine, then partially reacting the amino groups in the polyurethane-urea-polyamine with a compound selected from the group consisting of alkyl isocyanates in which the alkyl group has 12 to 22 carbon atoms and alpha-olefin epoxides having 12 to 22 carbon atoms, thereby to introduce a long-chain alkyl group into the molecule, reacting the thus-formed product having some unreacted amino groups with a member selected from the group consisting of 1,3-propanesultone, 1,4-butanesultone, .beta.-propiolactone, .epsilon.-caprolactone and .delta.-valerolactone, thereby to render the polymer amphoteric, and mixing the resulting polymer with water.
    • 一种用于制备可用于处理含纤维产品的两性树脂水乳液的方法,包括使异氰酸酯封端的氨基甲酸酯预聚物与过量的聚亚烷基多胺反应形成聚氨酯 - 脲 - 多胺,然后使氨基 在聚氨酯 - 脲 - 多胺中与选自其中烷基具有12-22个碳原子的烷基异氰酸酯和具有12-22个碳原子的α-烯烃环氧化物的化合物反应,从而引入长链烷基 将这样形成的具有一些未反应的氨基的产物与选自1,3-丙磺酸内酯,1,4-丁内酯,β-丙内酯,ε-己内酯和δ-戊内酯的成员反应,从而得到 使聚合物两性,并将所得聚合物与水混合。