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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: 2018-06-08
SEKISUI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This void is particularly likely to be generated when light, heat, etc. are applied to the 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

[0160] Preparation of Composition X for Forming the First Layer:

[0161] 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 765 (manufactured by BASF Corporation, N-alkyl type, molecular weight 509 ) and 0.2 parts by weight of BHT (2,6-di-tert-butyl-p-cresol, molecular weight 220) were mixed to obtain composition X for forming the first layer.

[0162] Preparation of composition Y for forming the second and third layers:

[0163] 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 mole %) 100 parts by weight, 40 parts by weight of ...

Embodiment 2～24 and comparative example 1～5

[0169] As shown in the following Tables 1 to 3, the types and contents of the components contained in the first layer, the second layer, and the third layer were set, and the intermediate film and the intermediate film were prepared in the same manner as in Example 1. Laminated glass.

[0170] (Evaluation)

[0171] (1) The glass transition temperature of the first layer

[0172] Kneaded products having respective compositions of the first layer in Examples and Comparative Examples were prepared. The obtained kneaded product was press-molded with a press-molding machine to obtain a resin film A having an average thickness of 0.35 mm. The obtained resin film A was left to stand under the conditions of 25 degreeC and 30% of relative humidity for 2 hours. After leaving to stand for 2 hours, the viscoelasticity was measured using "ARES-G2" manufactured by TAINSTRUMENTS CO., LTD. As a jig, a parallel plate with a diameter of 8 mm was used. The measurement was carried out under ...

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Abstract

The present invention provides an interlayer film for a 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 interlayer film 1 for laminated glass of the present invention includes a first layer 2 containing a polyvinyl acetal resin and a plasticizer, and is disposed on the first surface 2a side of the first layer 2 and contains a polyvinyl acetal resin and a plasticizer. The second layer 3 of plasticizer, said first layer 2 also contains a hindered amine light stabilizer whose alkyl or alkoxy group is bonded to the nitrogen atom of the piperidine structure.

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, 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. [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 yellowing tendency, high transmittance to UV-A rays and visible light, and low transmittance to UV-B rays. transmittance. This inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C27/12B32B27/30C08L29/14
CPCB32B27/08B32B27/22B32B27/306B32B2250/40B32B2605/00B32B17/10678B32B2250/03B32B2307/412B32B17/10036B32B17/10761B32B2605/08B32B17/10688B32B27/18B32B2605/006B32B27/30C03C27/02C08L29/14
Inventor 吉田章吾岩本达矢岛本伦男
Owner SEKISUI CHEM CO LTD
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