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A method for reducing the concentration of free carboxyl groups in fiber-forming linear terephthalsaeurepolyestern
A method for reducing the concentration of free carboxyl groups in fiber-forming linear terephthalsaeurepolyestern
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机译：降低成纤线性对苯二甲酸乙二酯中游离羧基浓度的方法
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摘要
An improvement in the process of preparing polyester filaments is disclosed as providing reinforced yarns and cords of polyester having low free-carboxyl-group contents which give superior performance in pneumatic tires and other reinforced rubber articles where heat-degradation is a problem. Reduction of free carboxyl groups is achieved by mixing with the molten polyester, prior to melt-spinning, 1,2-epoxy-3-phenoxypropane or 1,2-epoxy-3-n-hexyloxypropane.
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