Flame-Retardant Polyester Fibers and Preparation Process Thereof
AssigneeDaihachi Chemical Industry Co., Ltd.
InventorsYoshinori Tanaka, Yuki Masui
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Abstract
A preparation process of flame-retardant polyester fibers, comprising the steps of: impregnating polyester fibers with a flame retardancy giving liquid containing a phosphorus compound as a flame-retarder represented by the formula (I): wherein Ar represents a phenyl or naphthyl group which may be substituted by C1-4 alkyl groups, and n represents an integer 1 to 3; thermally treating the polyester fibers under normal or increased pressure after or at the same time as the impregnation treatment; and thereby giving flame retardancy to the polyester fibers.
Claims13
A preparation process of flame-retardant polyester fibers, comprising the steps of:
- impregnating polyester fibers with a flame retardancy giving liquid containing a phosphorus compound as a flame-retarder represented by the formula (I):
- wherein Ar represents a phenyl or naphthyl group which may be substituted by C1-4 alkyl groups, and n represents an integer 1 to 3;
- thermally treating the polyester fibers under normal or increased pressure after or at the same time as the impregnation treatment;
- and
- thereby giving flame retardancy to the polyester fibers.
Dependencies are inferred from the claim text.