Knitted/woven fabric of polyester fiber
AssigneeTeijin Fibers Limited
InventorsTsuyoshi Soeda, Shuji Minato, Norimitsu Kamiyama
Life of this patent
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Abstract
A knitted/woven fabric of polyester fibers is produced from a polyester polymer obtained by condensation-polymerizing an aromatic dicarboxylate in the presence of a catalyst which comprises a mixture of a titanium compound ingredient (A) comprising a titanium alkoxide and at least one product of the reaction of the titanium alkoxide with a specific carboxylic acid or anhydride thereof and a specific phosphorus compound ingredient (B) and/or comprises a product of the reaction of a titanium compound ingredient (C) with a specific phosphorus compound ingredient (D). The knitted/woven fabric obtained has a satisfactory color tone (low value of b*) and is excellent in suitability for knitting/weaving and dyeability.
Claims7
A polyester fiber knitted or woven fabric formed from yarns comprising polyester fibers comprising, as a principal component, a polyester polymer which has been produced by polycondensing an aromatic dicarboxylate ester in the presence of a catalyst,
- wherein
- the catalyst comprises at least one member selected from mixtures (1) and reaction products (2);
- (1) the mixtures (1) for the catalyst comprises a titanium compound component (A) mixed with phosphorus compound component (B),
- in which mixtures (1),
- the component (A) comprises at least one member selected from the group consisting of (a) titanium alkoxides represented by the general formula (I):
- in which formula (i), R1, R2, R3 and R4 respectively and independently from each other represent a member selected from alkyl groups having 1 to 20 carbon atoms and a phenyl group, m represent an integer of 1 to 4, and when m represents an integer of 2, 3 or 4, the 2, 3 or 4 R2s and R3s may be respectively the same as each other or different from each other, and (b) reaction products of the titanium compounds of the general formula (i) with aromatic polycarboxylic acids represented by the formula (ii):
- in which formula (II), n represents an integer of 2 to 4, or anhydrides of the acids of the formula (II);
- and the component (B) comprising at least one phosphorus compound represented by the general formula (III):
- in which formula (III), R5, R6 and R7 respectively and independently from each other represent an alkyl group having 1 to 4 carbon atoms, X represents a member selected from a —CH2— group and a —CH(Y)— group (wherein Y represents a phenyl group),
- the mixture (1) for the catalyst for the polycondensation being employed in an amount satisfying the requirements represented by the following expressions of relation (i) and (ii):
- 1≦Mp/MTi≦15 (i)
- and
- 10≦Mp+MTi≦100 (ii)
- wherein MTi represents a ratio in % of a value in milli mole of titanium element contained in the titanium compound component (A) to a value in mole of the aromatic dicarboxylate ester, and Mp represents a ratio in % of a value in milli mole of phosphorus element contained in the phosphorus compound component (A) to the value in mole of the aromatic dicarboxylate ester,
- (2) the reaction products (2) for the catalyst comprises a component (C) reacted with a component (D),
- in which reaction products (2),
- the component (C) comprises at least one member selected from the group consisting of (C) titanium alkoxides represented by the general formula (IV):
- in which formula (IV), R1, R9, R10 and R11 respectively and independently from each other represents an alkyl group having 1 to 20 carbon atoms, p represents an integer of 1 to 3, and when p represents an integer of 2 or 3, 2 or 3 R9s and R10s may be respectively the same as each other or different from each other, and (d) reaction products of the titanium alkoxides of the general formula (IV) with aromatic polycarboxylic acids represented by the above-mentioned general formula (II) or anhydrode of the acids;
- and
- the component (D) comprises at least one phosphorus compound represented by the general formula (V):
- in which formula (V), R12 represents an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 20 carbon atoms, and q represents an integer of 1 or 2.
Dependencies are inferred from the claim text.