会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明申请
    • POLYMERS FOR CONTACT LENSES
    • 聚合物用于接触镜片
    • WO2012143695A2
    • 2012-10-26
    • PCT/GB2012/000391
    • 2012-04-19
    • OCUTEC LIMITEDRASHID, AbdulGRAHAM, NeilBOWERS, Roderick
    • RASHID, AbdulGRAHAM, NeilBOWERS, Roderick
    • C08G18/283C08G18/284C08G18/2865C08G18/4833C08G18/6674C08G18/6677C08G2101/0091C08G2210/00G02B1/043C08L75/04
    • The present invention relates to a polyurethane polymer compositions comprising polyethylene glycol) monoalkyl ether. The compositions may be either crosslinked (suitable for reaction cast moulding) or thermoplastic (suitable for injection and/or compression moulding). Either of the above varieties may contain carbinol terminated polydimethyl siloxane components. There is also provided a process for preparing such a polyurethane polymer composition. The invention also relates to a process for preparing a polyurethane xerogel in the form of a molded article, said process comprising the steps of. i. preparing a mixture of a. at least one poly(ethylene glycol) and/or at least one polyol or macropolyol having a functionality greater than 2, or a mixture of such polyols or macropolyols having a functionality of greater than 2, b. at least one di-or poly-isocyanate, c. optionally at least one OH-terminated chain extender, d. optionally an additional compound comprising at least one hydroxyl group and at least one primary or secondary amine group, and e. at least one poly(ethylene glycol) monoalkyl ether; ii. dispensing the reaction mixture formed in step i) into a mold; iii. allowing the reaction mixture to react and cure; iv. removing the molded article from the mold; and v. hydrating the molded article. Optionally the process may comprise the step of hydrating the molded article to form a hydrated article.
    • 本发明涉及包含聚乙二醇单烷基醚的聚氨酯聚合物组合物。 组合物可以是交联的(适合于反应浇铸成型)或热塑性的(适于注射和/或压塑)。 上述品种均可含有甲醇封端的聚二甲基硅氧烷成分。 还提供了制备这种聚氨酯聚合物组合物的方法。 本发明还涉及一种制备模制品形式的聚氨酯干凝胶的方法,所述方法包括以下步骤。 一世。 准备一种混合物。 b)具有官能度大于2的至少一种聚(乙二醇)和/或至少一种多元醇或大多元醇,或这些多官能团或大多异氰酸酯的混合物,b。 至少一种二异氰酸酯或多异氰酸酯,c。 任选地至少一个OH-封端的扩链剂,d。 任选的包含至少一个羟基和至少一个伯或仲胺基团的另外的化合物, 至少一种聚(乙二醇)单烷基醚; II。 将步骤i)中形成的反应混合物分配到模具中; III。 使反应混合物反应并固化; IV。 将模制品从模具中取出; 和v。水合成型制品。 任选地,该方法可以包括使成型制品水合以形成水合制品的步骤。
    • 3. 发明申请
    • POLYMERS FOR CONTACT LENSES
    • 聚合物用于接触镜片
    • WO2011055108A1
    • 2011-05-12
    • PCT/GB2010/002020
    • 2010-11-02
    • OCUTEC LIMITEDRASHID, AbdulBOWERS, Roderick, WIlliam, JonathanTIPTON, WadeGRAHAM, Neil, Bonnette
    • RASHID, AbdulBOWERS, Roderick, WIlliam, JonathanTIPTON, WadeGRAHAM, Neil, Bonnette
    • C08G18/48C08G18/61C08G18/66G02B1/04
    • C08G18/61C08G18/4833C08G18/6674C08G2101/0091G02B1/043C08L75/04C08L83/04
    • The present invention relates to a polyurethane prepared from a mixture comprising: (a) at least one polyethylene glycol; (b) at least one di-isocyanate; (c) at least one polydialkyl siloxane diol; and (d) at least one diol of formula (I) wherein n is an integer from 1 to 25; wherein the polyethylene glycol, di-isocyanate, polydialkyl siloxane diol and diol are reacted under substantially anhydrous conditions. Further aspects of the invention relate to a process for preparing a polyurethane. The invention also relates to a process for preparing a polyurethane xerogel in the form of a molded article, said process comprising the steps of: (i) preparing a reaction mixture comprising at least one polyethylene glycol, at least one di-isocyanate, at least one polydialkyl siloxane diol and at least one diol of formula I as described above; (ii) reacting the reaction mixture formed in step (i) under substantially anhydrous conditions to form a polyurethane xerogel; and (iii) injection molding the polyurethane xerogel to form a molded article.
    • 本发明涉及由以下混合物制备的聚氨酯:(a)至少一种聚乙二醇; (b)至少一种二异氰酸酯; (c)至少一种聚二烷基硅氧烷二醇; 和(d)至少一种式(I)的二醇,其中n是1至25的整数; 其中聚乙二醇,二异氰酸酯,聚二烷基硅氧烷二醇和二醇在基本无水条件下反应。 本发明的其它方面涉及一种制备聚氨酯的方法。 本发明还涉及一种制备模制品形式的聚氨酯干凝胶的方法,所述方法包括以下步骤:(i)制备包含至少一种聚乙二醇,至少一种二异氰酸酯的反应混合物,至少一种 一种聚二烷基硅氧烷二醇和至少一种如上所述的式I的二醇; (ii)在基本上无水条件下使步骤(i)中形成的反应混合物反应形成聚氨酯干凝胶; 和(iii)注射成型聚氨酯干凝胶以形成模塑制品。
    • 10. 发明申请
    • POLYMERS FOR CONTACT LENSES
    • 聚合物用于接触镜片
    • WO2011055110A1
    • 2011-05-12
    • PCT/GB2010/002026
    • 2010-11-02
    • OCUTEC LIMITEDRASHID, AbdulBOWERS, Roderick, Willaim, JonathanTIPTON, WadeGRAHAM, Neil, Bonnette
    • RASHID, AbdulBOWERS, Roderick, Willaim, JonathanTIPTON, WadeGRAHAM, Neil, Bonnette
    • C08G18/48C08G18/66G02B1/04
    • C08G18/4833C08G18/6674C08G2220/00G02B1/043C08L75/08
    • The present invention relates to a thermoplastic polyurethane contact lens prepared from a mixture comprising: (a) at least one polyethylene glycol; (b) at least one di-isocyanate; and (c) at least one diol of formula (I): wherein n is an integer from 1 to 25; wherein the polyethylene glycol, di-isocyanate and diol are reacted under substantially anhydrous conditions. Further aspects of the invention relate to a process for preparing a contact lens. The invention also relates to a process for preparing a polyurethane xerogel in the form of a molded article, said process comprising the steps of: (i) preparing a reaction mixture comprising at least one polyethylene glycol, at least one di-isocyanate and at least one diol of formula I as described above; (ii) reacting the reaction mixture formed in step (i) under substantially anhydrous conditions to form a polyurethane xerogel; (iii) injection molding the polyurethane xerogel to form a molded article, (iv) hydrating the xerogel molded article to form a contact lens.
    • 本发明涉及由以下混合物制备的热塑性聚氨酯隐形眼镜:(a)至少一种聚乙二醇; (b)至少一种二异氰酸酯; 和(c)至少一种式(I)的二醇:其中n是1至25的整数; 其中聚乙二醇,二异氰酸酯和二醇在基本无水条件下反应。 本发明的其它方面涉及一种制备隐形眼镜的方法。 本发明还涉及一种制备模制品形式的聚氨酯干凝胶的方法,所述方法包括以下步骤:(i)制备包含至少一种聚乙二醇,至少一种二异氰酸酯和至少一种二异氰酸酯的反应混合物 如上所述的一种式I的二醇; (ii)在基本上无水条件下使步骤(i)中形成的反应混合物反应形成聚氨酯干凝胶; (iii)注射成型聚氨酯干凝胶以形成模塑制品,(iv)将干凝胶模塑制品保湿以形成隐形眼镜。