Semi-aromatic polyamide fiber and method for producing same
AssigneeKuraray Co., Ltd.
InventorsTakeshi Tsudaka, Shohei Tsunofuri, Yosuke Washitake
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Abstract
Provided is a semi-aromatic polyamide fiber having excellent spinning stability, heat resistance and chemical resistance. The semi-aromatic polyamide fiber includes a semi-aromatic polyamide resin having a melting point of 290° C. or higher and a plasticizer having a 5% thermal weight reduction temperature of 320° C. or higher, the resin having as a dicarboxylic acid component an aromatic dicarboxylic acid unit and as a diamine component 1,9-nonanediamine unit and 2-methyl-1,8-octanediamine unit in a molar ratio (the former:the latter) of 70:30 to 99:1.
Claims20
A semi-aromatic polyamide fiber, comprising:
- a semi-aromatic polyamide resin comprising as (i) a dicarboxylic acid component, an aromatic dicarboxylic acid unit in at least 60 mol. %, relative to the dicarboxylic acid component, and as (ii) a diamine component, (ii-a) 1,9-nonanediamine unit and (ii-b) 2-methyl-1,8-octanediamine unit in a (ii-a)/(ii-b) molar ratio in a range of from 70:30 to 99:1;
- and
- a plasticizer having a 5% thermal weight reduction temperature of 320° C. or higher,
- wherein the semi-aromatic polyamide resin has a melting point of 290° C. or higher, and
- wherein the plasticizer comprises at least one selected from a group consisting of a carboxylic acid amide compound and an oligomer having a fluorene skeleton.
Dependencies are inferred from the claim text.