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Environment-friendly fluorinated polysiloxane waterproof agent

A fluorosilicone water repellent, environmentally friendly technology, applied in textiles, papermaking, fiber processing, etc., can solve the problems of great environmental impact, small environmental damage, and good waterproof performance.

Inactive Publication Date: 2013-09-18
SUZHOU BANGCEN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, PFOA and PFOS in water present a large negative charge structure, therefore, their impact on the environment is great
[0004] At present, there is no environment-friendly fluorosilicon waterproof agent with good waterproof performance, little harm to the environment, and does not contain PFOA and PFOS.

Method used

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  • Environment-friendly fluorinated polysiloxane waterproof agent
  • Environment-friendly fluorinated polysiloxane waterproof agent
  • Environment-friendly fluorinated polysiloxane waterproof agent

Examples

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with specific embodiments.

[0019] The first step is to prepare a polysiloxane containing hydrogen in the side chain of fluorine substituted part of the hydrogen on the methyl group:

[0020] Put 600Kg octamethylcyclotetrasiloxane, 100Kg side chain hydrogen-containing polysiloxane, 200Kg fluorine substituted part of methyl hydrogenated cyclosiloxane, 25Kg hexamethyldisiloxane into the kettle, and add 30Kg Concentrated sulfuric acid, stirring at room temperature for 12 hours, adding sodium bicarbonate, adjusting the pH to 7, and filtering to obtain a polysiloxane containing hydrogen on the side chain of fluorine substituted part of the methyl group with a viscosity of 200 cps;

[0021] The second step is to prepare a polysiloxane containing polyoxyalkyl ether in the side chain of fluorine substituted part of the hydrogen on the methyl group:

[0022] Put 100Kg of the fluorine-substituted part of the methyl hyd...

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Abstract

The invention discloses an environment-friendly fluorinated polysiloxane waterproof agent. In order to avoid the fact that a textile fabric waterproof agent contains PFOA and PFOS, a fluorosilicone emulsion without perfluorooctanoic acid (PFOA) and perfluorooctane sulfonates (PFOS) is prepared to replace an acrylic resin emulsion which is widely used at present so as to prevent the problem that PFOA and PFOS residues are contained in textile fabric after waterproof treatment. The waterproof agent comprises the following components in percentage by weight: 60%-80% of polysiloxane with fluoro-substitution methyl hydrogenous side chain containing polyoxy alkyl ether, 10%-15% of a solvent and 10%-20% of water. The solvent is one of isopropyl alcohol, butoxyethanol and diethyleneglycolmonobutylether.

Description

Technical field [0001] The invention relates to the field of textile waterproofing, in particular to an environmentally friendly fluorosilicone waterproofing agent. Background technique [0002] The relationship between mankind and chemical industry is very close. In modern life, chemical products are inseparable almost anytime and anywhere. From material life such as clothing, food, housing and transportation to spiritual life such as culture, art and entertainment, chemical products are needed to serve them. . Some chemical products have played an epoch-making important role in the history of human development. Their production and application even represent a certain historical stage of human civilization. [0003] Currently, fluoroacrylic polymer emulsions are used for waterproofing of textile fabrics, which may contain PFOA (perfluorooctanoate) or PFOS (perfluorooctane sulfonate). Since PFOA is decomposed and released in the environment or human body, causing toxic hazards ...

Claims

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Application Information

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IPC IPC(8): D06M15/657C08G81/00C08G77/44C08G77/24
Inventor 朱胜伟
Owner SUZHOU BANGCEN TECH
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