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CN106103376A 涂覆有不可辐射固化的丙烯酸类硬质‑软质嵌段共聚物的光纤 无效 - 撤回

涂覆有不可辐射固化的丙烯酸类硬质‑软质嵌段共聚物的光纤
摘要：
一种包含丙烯酸类共聚物的光纤涂料组合物。所述丙烯酸类共聚物是一种包含两种或更多种丙烯酸类嵌段的嵌段共聚物。所述两种或更多种丙烯酸类嵌段具有不同的玻璃化转变温度(Tg)。所述丙烯酸类共聚物可包含Tg高于50℃的丙烯酸类嵌段和Tg低于0℃的丙烯酸类嵌段。具有代表性的衍生出丙烯酸类嵌段的重复单元的单体包括(甲基)丙烯酸烷基酯。在一种实施方式中，丙烯酸类共聚物包含具有衍生自甲基丙烯酸甲酯的重复单元的丙烯酸类嵌段和衍生自丙烯酸丁酯的丙烯酸类嵌段。所述丙烯酸类共聚物不含氨基甲酸酯基，不含脲基，不含可辐射固化的基团，否则就不会与涂料组合物中的其它组分反应。所述丙烯酸类共聚物的特征在于，在常用的基于丙烯酸酯的可辐射固化的涂料组合物中具有高溶解度，并且能够以高浓度在基于丙烯酸酯的涂料组合物中提供。
摘要（英）：

An optical fiber coating composition that includes an acrylic copolymer. The acrylic copolymer is a block copolymer that includes two or more acrylic blocks. The two or more acrylic blocks differ in glass transition temperature (Tg). The acrylic copolymer may include an acrylic block with a Tg above 50 DEG C and an acrylic block with a Tg below 0 DEG C. Representative monomers from which the repeat units of the acrylic blocks are derived include alkyl(meth)acrylates. In one embodiment, the acrylic copolymer includes an acrylic block with repeat units derived from methylmethacrylate and an acrylic block derived from butylacrylate. The acrylic copolymer lacks urethane groups, lacks urea groups, lacks radiation-curable groups, and is otherwise unreactive with other components in the coating composition. The acrylic copolymer is characterized in high solubility in common acrylate-based radiation-curable coating compositions and capability of being provided at high concentrations in acrylate-based coating compositions.

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