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Catalyst for preparing polyvinyl butyral and application of catalyst

A technology of polyvinyl butyral and catalyst, which is applied in the direction of physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, chemical instrument and method, etc. It can solve the problems of hydrochloric acid catalyst corrosion equipment, etc., and achieve Simplify the post-treatment process, improve product quality, and reduce the effect of wastewater

Pending Publication Date: 2021-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a catalyst for preparing polyvinyl butyral and its application, so as to solve the technical problems of hydrochloric acid catalyst corrosion equipment, etc. in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The acid ion exchange resin was dried at 100 ° C for 2 hours, and then soaked at 110 ° C for 12 hours, then the washing was taken out, and then the sulfonic ion exchange resin catalyst was obtained. 4 g of PVA was dissolved in ethanol with water mixed solvent (V et al alcohol: V et = 1.22), 2.6 g of n-butyl aldehyde, then 0.3 g of the obtained sulfonic acid ion exchange resin catalyst for polyvinyl alcohol The synthesis reaction of the stable aldehyde was continuously stirred at 100 ° C reaction temperature for 12 h, and the resulting product polyvinyl butyldure kerdehyde reached 68%.

Embodiment 2

[0013] The acid ion exchange resin was dried at 100 ° C for 2 hours, and then soaked at 100 ° C for 10 hours, then the washing was taken out, and then the sulfonic ion exchange resin catalyst was obtained. 4 g of PVA was dissolved in ethanol with water mixed solvent (V et al .. V. V. = 1.25: 2.4 g of n-butraldehyde, then 0.2 g of the obtained sulfonic acid ion exchange resin catalyst for polyvinyl alcohol The synthesis reaction of the stable buthaldehyde was continuously stirred at a reaction temperature of 90 ° C for 10 h, and the resulting product polyvinyl lysate had a acetal of 62%.

Embodiment 3

[0015] The acid ion exchange resin was dried at 100 ° C for 2 hours, and then soaked at 110 ° C for 12 hours, then the washing was taken out, and then the sulfonic ion exchange resin catalyst was obtained. 4 g of PVA was dissolved in ethanol and water mixed solvent (V et al .. V. V. = 1.15), 2.6 g of n-butraldehyde, then add 0.25 g of the obtained sulfonic acid ion exchange resin catalyst for polyvinyl alcohol The synthesis reaction of the stable buthaldehyde was continuously stirred at a reaction temperature of 100 ° C for 12 h, and the resulting product polyvinyl butyldure reachadehaldehyde reached 65%.

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PUM

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Abstract

The invention discloses a catalyst for preparing polyvinyl butyral and application of the catalyst, and relates to the technical field of polymer chemical engineering, and a preparation method of thecatalyst specifically comprises the following steps: drying acidic ion exchange resin at 100-110 DEG C for 2 hours, soaking the dried acidic ion exchange resin in concentrated sulfuric acid at 80-120DEG C for sulfonation for 8-16 hours, and conducting washing and drying to obtain the sulfonated acidic ion exchange resin catalyst. Sulfonated acidic ion exchange resin is adopted to replace a traditional liquid inorganic acid catalyst, introduction of hetero-ions is avoided, the product quality is improved, and equipment corrosion is reduced. Sulfonated ion exchange resin can be recycled, so that the production cost is reduced, procedures such as neutralization are omitted, the post-treatment process is simplified, the generation of wastewater is reduced, and the method is more environment-friendly.

Description

Technical field [0001] The present invention relates to the field of polymer chemical technology, and is specifically a catalyst for preparing polyvinyl butyral butylade. Background technique [0002] Polyvinyl butyral (PVB) is a condensation product obtained by reacting with polyvinyl alcohol (PVA) with butofral in a solid acid catalytic action. The PVB molecules have a branched long, flexible, good transparency, strong adhesion, light resistance, heat resistance, cold resistance, water, film formation, solubility, compatibility. Wide range of applications in safe glass sandwich, photovoltaic assembly packages, vacuum aluminized paper and paint ceramic paper, aluminum foil, and adhesives. With the rapid development of automobiles, construction and other industries, the demand for high-quality PVB resins has continued to grow rapidly. [0003] At present, my country's PVB production is multi-step precipitation method for the inorganic proteno acid as a catalyst, and the catalyst ...

Claims

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Application Information

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IPC IPC(8): B01J31/10C08F8/28C08F116/06
CPCB01J31/10C08F8/28C08F116/06
Inventor 石旵东王钧伟郑学根张元广吴秀银崔晓峰杨森
Owner CHINA PETROLEUM & CHEM CORP