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Composition for treating glass and application of composition

A composition and glass technology, applied in the direction of glass/slag layered products, synthetic resin layered products, coatings, etc., can solve the problem of low bonding strength, reduce construction technology, high compatibility, and improve production efficiency Effect

Inactive Publication Date: 2019-12-03
COVESTRO DEUTSCHLAND AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bonding strength between this type of system and the polyurethane RIM sealing system is not high

Method used

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  • Composition for treating glass and application of composition
  • Composition for treating glass and application of composition
  • Composition for treating glass and application of composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0114] Description of raw materials used in the examples:

[0115] A silane coupling agent:

[0116] Grade name CAS number A-1524 γ-Ureapropyltrimethoxysilane23843-64-3 A-1170 Bis-(γ-trimethoxysilylpropyl)amine82985-35-1 A-1100 3-aminopropyltriethoxysilane919-30-2

[0117] Desmodur S XP 2458: silane-terminated aliphatic prepolymer with a viscosity of about 30000-40000mPa·s at 23°C. The prepolymer contains no solvent and contains 10% Plasticizer, purchased from Covestro Polymers Co., Ltd.

[0118] Desmodur S XP 2821: a silane-terminated aliphatic prepolymer. The prepolymer contains no solvent and has a viscosity of about 20,000 mPa·s at 23° C., purchased from Covestro Polymer Co., Ltd.

[0119] Desmodur S XP 2636: silane-terminated aliphatic prepolymer. The prepolymer contains no solvent and has a viscosity of about 30000-50000 mPa·s at 23°C. It is purchased from Covestro Polymer Co., Ltd.

[0120] Desmodur S XP 2749: a silane-terminated aliphatic prepolymer. The prepolymer contains...

Embodiment 1-10

[0143] Select xylene, ethyl acetate, ethylene glycol monobutyl ether, absolute ethanol, and n-butanol to prepare organic solvents according to Table 2 below.

[0144] Table 2 Organic solvents

[0145] Solvent the amount Ethyl acetate 20% by weight Xylene 40% by weight Absolute ethanol 30% by weight Ethylene glycol monobutyl ether 5 wt% N-butanol 5 wt%

[0146] The silane-terminated polyurethane prepolymer and the above-mentioned organic solvent were mixed for 5 minutes; then an appropriate amount of silane coupling agent and 1,8-diazabicycloundec-7-ene (DBU) were added and mixed for 30 seconds. Place the mixture on a shaker and continue to shake for about 40 minutes. After the solution is evenly shaken, the compositions of Examples 1-10 are obtained. The amounts of raw materials used are shown in Table 3 below.

[0147] At room temperature, place the cleaned and completely dry glass test sample on the workbench. Dip a small amount of the composition of Examples 1-10 with a...

Embodiment 11-15

[0159] As described in Examples 1-10, xylene, ethyl acetate, ethylene glycol monobutyl ether, absolute ethanol, and n-butanol were selected to prepare organic solvents according to Table 2.

[0160] Mix the silane-terminated polyurethane prepolymer and the above-mentioned organic solvent for 5 minutes; then add an appropriate amount of silane coupling agent and DBU and continue to mix for 30 seconds; place the mixture on a shaker and continue to shake for about 40 minutes, and the solution is evenly shaken to obtain the example The composition of 11-15, the amount of raw materials used is shown in Table 4 below.

[0161] At room temperature, place the cleaned and completely dry glass test sample on the workbench. Dip a small amount of the composition of Examples 11-15 with a brush and apply it to the glass plate, making the brush as thin as possible. Use a wiper to control the glass surface-wet film thickness to 50um. The surface dry time was measured, and the results are summari...

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Abstract

The invention relates to a composition for treating glass and application of the composition. The composition is prepared from a silane coupling agent, a silane-terminated polyurethane prepolymer, anoptional organic solvent and an optional catalyst. According to the composition, a surfactant and a primer coating of the glass are combined together, thus a three-step method for sealing the vehicleglass in the prior art can be improved to a two-step method, the construction processes can be reduced, the processing time can be saved, and the production efficiency is improved greatly.

Description

Technical field [0001] The invention relates to the technical field of sealing materials, in particular to a composition for processing glass and its application. Background technique [0002] China's automobile production is getting higher and higher. Every car needs glass, and every piece of glass needs to be closely connected to the car body to be fully sealed. The sealing effect of automobile glass is directly related to the sound insulation effect and comfort of the automobile. Every manufacturer tries its best to improve production efficiency while ensuring the sealing effect of automotive glass. [0003] Usually, after pre-treatment, commercial automobile glass products are sealed into car windows, sunroofs or windshields through the following three processes: [0004] 1. Glass activation: A few minutes or 1-2 hours after the glass surface is coated with amino or hydroxyl silane coupling glass activator, the silane coupling agent is hydrolyzed and deposited on the glass surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/30C03C27/04C09D175/04C09D183/08B32B17/00B32B17/10B32B27/40B32B27/06B32B15/00B32B15/095B32B27/00
CPCC03C17/30C03C27/048C09D175/04C09D183/08B32B17/00B32B17/06B32B27/40B32B27/08B32B15/00B32B15/095B32B27/00B32B2605/08C08L83/04C08L75/04
Inventor 张晨曦徐振钢朱宏张俞峰
Owner COVESTRO DEUTSCHLAND AG
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