首页> 外国专利> USE OF POLYMER ALLOYS BASED ON CELLULOSE ESTERS IN EYE CONTACT OPTICS AND CONTACT LENSES AND SHELLS MADE FROM THE POLYMER ALLOYS.

USE OF POLYMER ALLOYS BASED ON CELLULOSE ESTERS IN EYE CONTACT OPTICS AND CONTACT LENSES AND SHELLS MADE FROM THE POLYMER ALLOYS.

机译:基于纤维素酯的高分子合金在由高分子合金制成的眼睛接触光学和接触透镜和外壳中的使用。

摘要

Contact lenses prepared from a polymer alloy essentially free from low molecular weight plasticizers and which comprises (A) 97-80% by weight of one or more cellulose esters of one or more aliphatic carboxylic acids, and (B) 3-30% by weight of an aliphatic polymeric compound having ester moieties, carbonate moieties or both ester and carbonate moieties in the polymer chain and having an average molecular weight of 2,000 to 300,000, with less than 2% by weight of compounds having a molecular weight below 500.
机译:由基本上不含低分子量增塑剂的聚合物合金制备的隐形眼镜,该隐形眼镜包含(A)97-80重量%的一种或多种纤维素酯和一种或多种脂族羧酸,和(B)3-30重量% (a)脂族聚合物化合物,其在聚合物链中具有酯部分,碳酸酯部分或酯和碳酸酯部分,并且平均分子量为2,000至300,000,其中小于2%重量的分子量低于500的化合物。

著录项

  • 公开/公告号AT25294T

    专利类型

  • 公开/公告日1987-02-15

    原文格式PDF

  • 申请/专利权人 BAYER AG;

    申请/专利号AT19840103925T

  • 申请日1984-04-09

  • 分类号G02C7/04;B29D11/00;C08L1/14;

  • 国家 AT

  • 入库时间 2022-08-22 07:17:48

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