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Interlayer film for laminated glass and laminated glass

A technology of laminated glass and interlayer film, applied in glass/slag layered products, layered products, synthetic resin layered products, etc., to achieve the effect of inhibiting the rise of YI value

Active Publication Date: 2019-06-28
SEKISUI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These voids are particularly likely to occur when light and heat are applied to laminated glass

Method used

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  • Interlayer film for laminated glass and laminated glass
  • Interlayer film for laminated glass and laminated glass
  • Interlayer film for laminated glass and laminated glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0184] Preparation of Composition X for Forming the First Layer:

[0185] The average polymerization degree of polyvinyl acetal resin (polyvinyl butyral (PVB) resin, polyvinyl alcohol (PVA) 2300, the content rate of hydroxyl group 23.2 mol%, the degree of acetylation 12.5 mol%, the degree of acetalization 64.3 mol %) 100 parts by weight, 60 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) as a plasticizer, TINUVIN 770DF (manufactured by BASF Corporation, N-H (hydrogen atom) type, molecular weight 481 ) 0.2 parts by weight and BHT (2,6-di-tert-butyl p-cresol, molecular weight 220) 0.2 parts by weight, Adeka stab 3050 (manufactured by ADEKA Corporation, phosphorus-containing antioxidant, molecular weight 503) 0.2 parts by weight were mixed to obtain Composition X for forming the first layer was obtained.

[0186] Preparation of composition Y for forming the second and third layers:

[0187] The average polymerization degree of polyvinyl acetal resin (polyvinyl b...

Embodiment 2～30 and comparative example 1～5

[0193] As shown in the following Tables 1 to 5, except that the types and contents of the components contained in the first layer, the second layer and the third layer were set, an intermediate film was produced in the same manner as in Example 1. and laminated glass.

Embodiment 31

[0195] Preparation of Composition X for forming intermediate film (first layer):

[0196] The average polymerization degree of polyvinyl acetal resin (polyvinyl butyral (PVB) resin, polyvinyl alcohol (PVA) 1700, the content rate of hydroxyl group 30.7 mol%, the degree of acetylation 0.8 mol%, the degree of acetalization 68.5 mol %) 100 parts by weight, 30 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) as a plasticizer, TINUVIN 770DF (manufactured by BASF Corporation, N-H (hydrogen atom) type, molecular weight 481 ) 0.2 parts by weight, BHT (2,6-di-tert-butyl-p-cresol, molecular weight 220) 0.2 parts by weight, Adekastab 3050 (manufactured by ADEKA Corporation, phosphorus-containing antioxidant, molecular weight 503) 0.2 parts by weight and the content was set at Magnesium ions were mixed in an amount reaching 60 ppm in the intermediate film to obtain a composition X for forming the intermediate film.

[0197] Production of interlayer film:

[0198]The compos...

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Abstract

The present invention provides an interlayer film for laminated glass that is less likely to generate voids at the end of a laminated glass and can suppress an increase in the YI value at the end of the laminated glass. The intermediate film for laminated glass of the present invention has a one-layer structure or a structure of two or more layers, wherein the entire intermediate film contains polyvinyl acetal resin, a plasticizer, a hindered amine light stabilizer, and a phosphorus-containing antioxidant. When the intermediate film has only the first layer, the glass transition temperature of the first layer is 32°C or higher; when the intermediate film has the first layer and the second layer, with or without the third layer, the second The glass transition temperature of at least one of the layer and the third layer is 32° C. or higher.

Description

technical field [0001] The present invention relates to an interlayer film for laminated glass used for laminated glass. In addition, the present invention relates to a laminated glass using the above-mentioned interlayer film for laminated glass. Background technique [0002] Even if laminated glass is damaged by external impact, the amount of glass shards scattered is small, and it is excellent in safety. Therefore, the above-mentioned laminated glass is widely used in automobiles, rail vehicles, aircraft, ships, buildings, and the like. The above-mentioned laminated glass can be produced by sandwiching an interlayer film for laminated glass between a pair of glass plates. [0003] As an example of the above-mentioned interlayer film for laminated glass, an interlayer film is disclosed in the following Patent Document 1, which has a low tendency to yellow, has a high transmittance to UV-A rays and visible light, and has a high transmittance to UV-B rays. Rays have low t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C27/12B32B27/30C08K5/3435C08L31/04
CPCB32B27/18C08K5/103C08K5/3435B32B27/08B32B27/306B32B2307/71B32B2605/006B32B17/10036B32B17/10678B32B27/42B32B2307/30C08K5/521B32B27/22B32B17/10761C08K5/13C08K5/49C08L29/14C08K5/5435B32B17/10605C03C27/10B32B17/10293B32B17/1055C03C10/00C08J2329/14C08K2201/012
Inventor 岩本达矢吉田章吾
Owner SEKISUI CHEM CO LTD
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