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A high temperature resistant water-soluble polyester size

A technology of water-soluble polyester and high temperature resistance, applied in the field of polyester size, can solve the problems of affecting the sizing effect of polyester size, easy caking, etc., achieve good adhesion, easy film formation, and improve flexibility Effect

Active Publication Date: 2022-05-24
湖北山特莱新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When water-soluble polyester is exported to India, Myanmar and other countries, the local summer temperature is high, the warehouse temperature sometimes reaches 50°C, and the humidity is also high. Conventional water-soluble polyester is easy to agglomerate under this condition, which affects Sizing effect of polyester size

Method used

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  • A high temperature resistant water-soluble polyester size

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 100 parts of polyester, 45 parts of ethylene glycol, 8 parts of sodium pentasulfonate isophthalate, 7 parts of isophthalic acid, 0.8 parts of polyether, 5 parts of diethylene glycol, 1 part of polyethylene glycol 600, 3 parts of adipic acid and 0.1 part of anti-ether agent were put into the esterification kettle, beating and mixing for 30 minutes, the temperature was controlled at 260 ° C, esterification was carried out for 3 h to obtain an esterification liquid, and then the filter was heated to 260 ° C, and the esterification liquid was poured and filtered. To the polymerization kettle, the polymerization time is less than or equal to 3h, the polymerization temperature is 270℃, and the vacuum degree is less than or equal to 100pa.

[0026] The water-soluble polyester slurry melt, cationic polyacrylamide, ammonium persulfate and urethane are introduced into the mixing kettle, and the mass ratio of the water-soluble polyester slurry melt, cationic polyacrylamide, and ure...

Embodiment 2

[0029] 100 parts of polyester, 40 parts of ethylene glycol, 9 parts of sodium pentasulfonate isophthalate, 6.5 parts of isophthalic acid, 0.9 parts of polyether, 3.5 parts of diethylene glycol, 3.5 parts of polyethylene glycol 600, 2 parts of adipic acid and 0.3 part of anti-ether agent were put into the esterification kettle, beating and mixing for 30 minutes, the temperature was controlled at 250 ° C, esterification was carried out for 3.5 h to obtain an esterification liquid, and then the temperature of the filter was raised to 260 ° C, and the esterification liquid was poured Filter to the polymerization kettle, the polymerization time is less than or equal to 3h, the polymerization temperature is 270℃, and the vacuum degree is less than or equal to 100pa.

[0030] The water-soluble polyester slurry melt, cationic polyacrylamide, potassium persulfate and urethane are introduced into the mixing kettle, and the mass ratio of the water-soluble polyester slurry melt, cationic p...

Embodiment 3

[0033] 100 parts of polyester, 35 parts of ethylene glycol, 10 parts of sodium pentasulfonate isophthalate, 6 parts of isophthalic acid, 1 part of polyether, 2 parts of ethylene glycol, 6 parts of polyether glycol 400, 1 part of polyester polyol and 0.5 part of anti-ether agent were put into the esterification kettle for beating and mixing for 30min, the temperature was controlled at 240°C, esterification was carried out for 4h to obtain an esterification liquid, then the temperature of the filter was increased to 260°C, and the esterification liquid was poured into The material is filtered into the polymerization kettle, the polymerization time is less than or equal to 3h, the polymerization temperature is 270℃, and the vacuum degree is less than or equal to 100pa.

[0034] The water-soluble polyester slurry melt, cationic polyacrylamide, hydrogen peroxide and urethane are introduced into the mixing kettle, and the mass ratio of the water-soluble polyester slurry melt, cationi...

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Abstract

The invention belongs to the technical field of polyester slurry, and discloses a high-temperature-resistant water-soluble polyester slurry, which is characterized in that the water-soluble slurry is obtained by blending and modifying component A and component B, Component A includes: 100 parts by mass of recycled polyester, 35-45 parts of ethylene glycol, 8-10 parts of sodium pentasulfonate isophthalate, 6-7 parts of isophthalic acid, 0.8-45 parts of polyether 1 part of reactant, component B is cationic polyacrylamide, and the mass ratio of component A to component B is 3-5. The beneficial effects of the present invention are: the use of cationic polyacrylamide and polyester pulp to blend can increase the glass transition temperature of the blend, and the dosage of cationic polyacrylamide and isophthalic acid can be adjusted to make the blended polyester pulp The Tg of the material is moderate. When the amount of isophthalic acid is reduced, it can be used as a supplement to the softener, which can simultaneously increase the glass transition temperature of the polyester size and the flexibility of the size film.

Description

technical field [0001] The invention belongs to the technical field of polyester pulp, and particularly relates to a high temperature-resistant water-soluble polyester pulp. Background technique [0002] Common polyester pulp is made of PET, and terephthalate, flexible groups and water-soluble groups are introduced into PET. Terephthalate can impart adhesiveness and toughness of the sizing film, and the content should not be lower than 20mol%, otherwise the strength of the serosal film will be too low and the adhesive force will be too weak. Dispersible or water-soluble polyester paste. The flexible group is used to adjust the glass transition temperature Tg and destroy the regularity of the molecule, thereby lowering the Tg to a suitable value. In the sizing project, the Tg value of the slurry is of great significance, which is closely related to the suitable sizing temperature of the slurry, the mechanical properties of the sizing film and the re-sticking phenomenon on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/00C08L33/26C08K5/205C08K3/30C08K3/20C08G63/688C08G63/78
CPCC08L67/00C08G63/6886C08G63/78C08L2201/08C08L33/26C08K5/205C08K3/30C08K3/20
Inventor 陈春华周重旭丁成城
Owner 湖北山特莱新材料有限公司
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