| abstract |
The present invention relates to a biodegradable polyester composite fiber for screen fabric, and more particularly, to an acid component comprising an aliphatic acid containing a carboxylic acid group and an aromatic acid containing a phenylene group in a polyester ciscore type composite fiber. , A polyester prepared by mixing esterified and polycondensed by mixing a sulfonic acid metal salt and a diol component having 2 to 14 carbon atoms, the core part 10 to 20 mol% of aliphatic acid, 80 to 90 mol% of aromatic acid and 0.5 to 1.5 mol of sulfonic acid metal salt % Is mixed, the ratio of the substance and diol component containing acid and metal sulfonic acid salt is mixed in a weight ratio of 1.0: 1.0 to 1.4, the cis part 10-20 aliphatic acid of any of adipic acid, succinic acid and glutaric acid Mol%, terephthalic acid 40 to 60 mol%, isophthalic acid 20 to 40 mol% and sulfonic acid metal salt 0.5 to 1.5 mol%, the ratio of the substance and diol component containing the acid component and sulfonic acid metal salt is 1.0 Provides biodegradable polyester composite fiber for screen fabric, which is mixed at a weight ratio of 1.2 to 1.4. |