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    • 1. 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。
    • 4. 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。
    • 9. 发明公开
    • POLYMERS FOR CONTACT LENSES
    • 用于隐形眼镜的聚合物
    • EP2496620A2
    • 2012-09-12
    • EP10779322.6
    • 2010-11-02
    • OCUTEC LIMITED
    • RASHID, AbdulBOWERS, Roderick, William, JonathanTIPTON, WadeGRAHAM, Neil, Bonnette
    • C08G18/48C08G18/61C08K5/00G02B1/04
    • C08G71/04C08G18/4825C08G18/4829C08G18/4833C08G18/61C08G2101/0091C08G2210/00G02B1/043C08L69/00
    • The present invention relates to a polyurethane polymer composition comprising polyethyleneglycol dialkyl ether. There is also provided 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 mixture of a. at least one polyethylene glycol or at least one polyol of formula (I), wherein at least three Of X
      1 , X
      2 , X
      3 , X
      4 and X
      5 are each independently an OH-terminated group, and the remainder of X
      1 , X
      2 , X
      3 , X
      4 and X
      5 are each independently H or absent, and Z is a central linking unit, a. at least one di- or poly-isocyanate, b. optionally at least one OH-terminated chain extender, and c. at least one polyethyleneglycol dialkyl 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.
    • 本发明涉及包含聚乙二醇二烷基醚的聚氨酯聚合物组合物。 还提供了一种制备聚氨酯的方法。 本发明还涉及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。 准备一种混合物。 至少一种聚乙二醇或至少一种式(I)的多元醇,其中X 1,X 2,X 3,X 4和X 5中的至少三个各自独立地为OH-封端的基团,并且剩余的X 1 X 2,X 3,X 4和X 5各自独立地为H或不存在,并且Z为中心连接单元,a。 至少一种二异氰酸酯或多异氰酸酯,b。 任选至少一种OH-封端的增链剂,和c。 至少一种聚乙二醇二烷基醚; 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。 从模具中取出模制品; 和v。使模制品水合。