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Polysiloxane and application thereof

A technology of polysiloxane and organosiloxane, which is applied in the direction of coating, etc., can solve the problems of long curing time, continuous industrial production, low hardness, and low production efficiency

Active Publication Date: 2020-10-30
武汉中科先进材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Transparent organosiloxane polymers are used for anti-fog on the surface of various transparent glass and plastic materials, such as optical lenses, goggles, face shields, helmet panels, automotive parts, etc., but they are in the form of heat curing and require long curing Time and high energy consumption, low production efficiency, not suitable for continuous industrial production and low hardness and poor scratch resistance

Method used

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  • Polysiloxane and application thereof
  • Polysiloxane and application thereof
  • Polysiloxane and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation of embodiment 1 anti-fog coating

[0040](a) Preparation of semi-blocked isocyanate prepolymer: add 133.38g (0.6mol) isophorone diisocyanate IPDI and 0.2g (0.1wt%) dibutyltin dilaurate DBTDL in the three-neck flask of 500mL and start stirring; Sequentially weigh 0.5394g (0.262wt%) p-hydroxyanisole MEHQ, 1.0788g (0.525wt%) 2,6-di-tert-butyl-4-methylphenol BHT and 70.05g (0.602mol) hydroxyethyl acrylate HEA, mixed well until completely dissolved, transferred to a constant pressure dropping funnel, and slowly added dropwise to the above-mentioned three-necked flask at room temperature (the reaction is violently exothermic, control the dropping speed to avoid local overheating), after dropping, continue to react at room temperature for 30 minutes , heat up to 70°C and react until the content of the isocyanate group (-NCO) of the mixture reaches the theoretical value (measured by the di-n-butylamine hydrochloride method), then cool down to obtain a semi-block...

Embodiment 2

[0047] The preparation of embodiment 2 anti-fog coating

[0048] (a) Preparation of semi-blocked isocyanate prepolymer: add 266.76g (1.2mol) isophorone diisocyanate IPDI and 0.4g (0.1wt%) dibutyltin dilaurate DBTDL in the three-necked flask of 500mL and start stirring; Weigh in turn 1.0788g (0.262wt%) p-hydroxyanisole MEHQ, 2.1576g (0.525wt%) 2,6-di-tert-butyl-4-methylphenol BHT and 140.1g (1.204mol) hydroxyethyl acrylate HEA, mixed well until completely dissolved, transferred to a constant pressure dropping funnel, and slowly added dropwise to the above-mentioned three-necked flask at room temperature (the reaction is violently exothermic, control the dropping speed to avoid local overheating), after dropping, continue to react at room temperature for 30 minutes , heat up to 70°C and react until the content of the isocyanate group (-NCO) of the mixture reaches the theoretical value (measured by the di-n-butylamine hydrochloride method), then cool down to obtain a semi-blocked...

Embodiment 3

[0055] The preparation of embodiment 3 anti-fog coating

[0056] (a) Preparation of semi-blocked isocyanate prepolymer: add 266.76g (1.2mol) isophorone diisocyanate IPDI and 0.4g (0.1wt%) dibutyltin dilaurate DBTDL in the three-necked flask of 500mL and start stirring; Weigh in turn 1.0788g (0.262wt%) p-hydroxyanisole MEHQ, 2.1576g (0.525wt%) 2,6-di-tert-butyl-4-methylphenol BHT and 140.1g (1.204mol) hydroxyethyl acrylate HEA, mixed well until completely dissolved, transferred to a constant pressure dropping funnel, and slowly added dropwise to the above-mentioned three-necked flask at room temperature (the reaction is violently exothermic, control the dropping speed to avoid local overheating), after dropping, continue to react at room temperature for 30 minutes , heat up to 70°C and react until the content of the isocyanate group (-NCO) of the mixture reaches the theoretical value (measured by the di-n-butylamine hydrochloride method), then cool down to obtain a semi-blocked...

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Abstract

The invention discloses polysiloxane and application thereof. The polysiloxane is formed by reacting a semi-closed isocyanate prepolymer with an organic polymer silanol. The polysiloxane has an anti-fog function, and when the polysiloxane is applied to an anti-fog coating, UV curing can be achieved, and the hardness of the coating can be improved.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to polysiloxane and its application. Background technique [0002] Highly transparent materials are indispensable materials in our daily production, but they are prone to fogging during use, which reduces the light transmittance on the surface of the material, affects the line of sight, brings a lot of inconvenience to life, and even causes serious harm . In recent years, anti-fog technology has gradually attracted people's attention. The research and development of hydrophilic anti-fog coatings has made the fastest progress, and a series of advanced technologies and relatively mature products have been formed. Hydrophilic anti-fog coating is a functional material. It is a chemical product with anti-fog function formulated with a polymer material with a hydrophilic group as the main component, and a corresponding proportion of other additives and organic solvents. , i...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D183/12C09D7/63C09D7/65C08J7/054C08G77/388C08G77/46C08G77/26C08G18/10C08G18/79C08L67/02
CPCC08G18/10C08G18/792C08G18/794C08G77/26C08G77/388C08G77/46C08J2367/02C08J2483/04C08J2483/12C08K2201/014C09D183/04C09D183/12C09D7/63C09D7/65C08J7/054C08L71/02C08K5/42
Inventor 喻学锋康翼鸿杨新耕边式
Owner 武汉中科先进材料科技有限公司
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