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Interlayer film for laminated glass and laminated glass

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

Active Publication Date: 2022-03-15
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, heat, etc. 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

[0181] Preparation of Composition X for Forming the First Layer:

[0182] Polyvinyl acetal resin (polyvinyl butyral (PVB) resin, polyvinyl alcohol (PVA) with an average degree of polymerization of 2300, a hydroxyl content of 23.0 mol%, a degree of acetylation of 12.5 mol%, butyralized 64.5 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, 0.2 parts by weight of BHT (2,6-di-tert-butyl-p-cresol, molecular weight 220) and 0.2 parts by weight of Adekastab 3050 (manufactured by ADEKA Corporation, phosphorus-containing antioxidant, molecular weight 503) were mixed to obtain Composition X for forming the first layer was obtained.

[0183] Preparation of composition Y for forming the second and third layers:

[0184] Polyvinyl acetal resin (polyvinyl butyral (PVB) resin, polyvinyl alcohol (PVA) with an av...

Embodiment 2～30 and comparative example 1～5

[0190] As shown in the following Tables 1 to 5, an intermediate film was prepared in the same manner as in Example 1, except that the types and contents of the components contained in the first layer, the second layer, and the third layer were set. and laminated glass.

Embodiment 31

[0192] Preparation of Composition X for Forming Intermediate Film (First Layer):

[0193] Polyvinyl acetal resin (polyvinyl butyral (PVB) resin, polyvinyl alcohol (PVA) with an average degree of polymerization of 1700, a hydroxyl content of 30.0 mol%, a degree of acetylation of 1.0 mol%, butyralized 69.0 mol %) 100 parts by weight, 40 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 Magnesium was mixed in an amount of 60 ppm in the intermediate film to obtain a composition X for forming the intermediate film.

[0194] Preparation of interlayer film:

[0195] The composition for forming an intermediate film was ...

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Abstract

The present invention provides an interlayer film for laminated glass, which is less likely to cause voids at the edge of the laminated glass, and which can suppress an increase in the YI value of the edge of the laminated glass. The interlayer film for laminated glass of the present invention has a structure of one layer or two or more layers, and the entire interlayer film contains a polyvinyl acetal resin, a plasticizer, a hindered amine light stabilizer, and a phosphorus-containing antioxidant.

Description

[0001] This application is a divisional application of a patent application with the Chinese application number 201480025468.4, the title of the invention is "intermediate film for laminated glass and laminated glass" and the filing date is September 30, 2014. technical field [0002] 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 [0003] 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, railway 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. [0004] As an example of the above-m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B17/10B32B27/06B32B27/22B32B27/18B32B27/30C03C27/12
CPCB32B27/08B32B27/22B32B27/306B32B2250/40B32B2605/00B32B17/10036B32B2250/03B32B2307/412B32B2307/102B32B17/10678B32B17/10761B32B17/10688B32B27/18B32B2605/006B32B27/30C03C27/08C08L29/14B32B17/1055
Inventor 吉田章吾岩本达矢岛本伦男
Owner SEKISUI CHEM CO LTD
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