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Preparation method and application of polyester compound with dispersity

A compound and dispersibility technology, which is applied in the field of preparation of polyester compounds, can solve problems such as discoloration, and achieve the effects of improving vividness, good water solubility, and improving high-temperature dispersibility

Active Publication Date: 2021-01-22
HANGZHOU TRANSFAR FINE CHEM CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, the effects of additives and dyes are too strong, which may cause discoloration.

Method used

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  • Preparation method and application of polyester compound with dispersity
  • Preparation method and application of polyester compound with dispersity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 332g of terephthalic acid, 90 grams of butylene glycol, and 0.4 grams of catalyst zinc acetate in a 1000ml autoclave. Slowly raise the temperature under the protection of nitrogen, and when the temperature rises to 180°C in 20-30 minutes, control the reaction at 180-190°C for 3 hours; remove the water generated during the reaction at the same time; then add 600g of polyethylene glycol 400 (PEG-400). Slowly raise the temperature under the protection of nitrogen, and when the temperature rises to 180°C, control the reaction at 180-190°C for 3 hours, and remove the generated water during the reaction. After the reaction is finished, the reaction product polyethylene glycol ester product is obtained.

Embodiment 2

[0026] Add 332 g of terephthalic acid, 104 g of pentylene glycol, and 0.3 g of titanium acetate in a 1000 ml autoclave. Slowly raise the temperature under the protection of nitrogen, and when the temperature rises to 180°C in 20-30 minutes, control the reaction at 180-190°C for 3 hours; remove the water generated during the reaction; then add 500g of polyethylene glycol 600 (PEG-600). Slowly raise the temperature under the protection of nitrogen, and when the temperature rises to 180°C, control the reaction at 180-190°C for 3 hours, and remove the generated water during the reaction. After the reaction is finished, the reaction product polyethylene glycol ester product is obtained.

Embodiment 3

[0028] Add 332 g of terephthalic acid, 118 g of hexanediol, and 0.4 g of magnesium acetate in a 1000 ml autoclave. Slowly raise the temperature under the protection of nitrogen, and when the temperature rises to 180°C in 20-30 minutes, control the reaction at 180-190°C for 3 hours; remove the water generated during the reaction; then add polyethylene glycol 200 (PEG-200) 640g. Slowly raise the temperature under the protection of nitrogen, and when the temperature rises to 180°C, control the reaction at 180-190°C for 3 hours, and remove the generated water during the reaction. After the reaction is finished, the reaction product polyethylene glycol ester product is obtained.

[0029] In order to illustrate the effect of the product of the present invention more clearly, the products of each embodiment are compared with the commercially available products to evaluate the differences of the products.

[0030] After replacing material A in the leveling agent in the same proportio...

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Abstract

The invention discloses a preparation method and application of a polyester compound with dispersity. The technical scheme adopted by the invention is as follows: mixing terephthalic acid and dihydricalcohol, adding a catalyst, slowly heating for melting, heating to 180-190 DEG C, carrying out esterification reaction under the action of the catalyst to generate di (terephthalic acid) diester, andadding polyethylene glycol for esterification to obtain a polyethylene glycol ester compound. The polyester compound takes a polyester structure as a hydrophobic end, has strong acting force with linear slurry, can effectively help solubilization and dispersion of the slurry, and prevents the problems of slurry precipitation, slurry spots, color spots and the like; the leveling agent prepared bycompounding the compound with other surfactants and carriers has a very good synchronous dyeing effect on dyes with bright colors and sensitive colors so that the dyeing brightness of polyester is improved; meanwhile, the compound has good dispersity on the polyester sizing agent and is compounded for use so that the problems of color spots, color spots and the like caused by sizing agent residuescan be reduced, and the one-time dyeing success rate is increased.

Description

technical field [0001] The invention relates to the field of high molecular polymers, in particular to a preparation method and application of a dispersible polyester compound. Background technique [0002] There are a lot of oil, size, and oligomers on the surface of polyester fabrics. Even after the re-sanding process, impurities such as slurry, oligomers, etc. will still remain on the surface of the fabric. These impurities are re-precipitated under acidic conditions during the dyeing process, and condensed under high temperature conditions, so pulp spots and color flowers still appear. The dyes of bright colors and sensitive colors (blue dyes) are often not ternary colors. There are certain differences in the compatibility of dyes, so it is difficult to dye synchronously, so it is easy to produce color spots, uneven colors and poor reproducibility And other problems, the auxiliaries can improve the synchronous dyeing of dyes. Of course, the effects of additives and dye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G63/78D06P1/52D06P3/54
CPCC08G63/672C08G63/78D06P1/5271D06P3/54
Inventor 项宝军洪言情金鲜花王兰冯勇凯游爱鸳
Owner HANGZHOU TRANSFAR FINE CHEM CO LTD
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