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Laminated glass interlayer and laminated glass

A technology of laminated glass and interlayer film, applied in glass/slag layered products, layered products, synthetic resin layered products, etc., can solve problems such as ghosting

Inactive Publication Date: 2016-02-24
SEKISUI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in laminated glass using an interlayer film for laminated glass in which two or more resin layers are laminated as described above, when external light is visually recognized through the laminated glass, there is a problem that sometimes Seeing the image of light as a ghost

Method used

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  • Laminated glass interlayer and laminated glass
  • Laminated glass interlayer and laminated glass
  • Laminated glass interlayer and laminated glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] (1) Preparation of resin composition for sound insulation layer

[0097] With respect to polyvinyl butyral obtained by acetalizing polyvinyl alcohol having an average degree of polymerization of 2400 with n-butyraldehyde (acetyl group amount 12 mol%, butyral group amount 66 mol%, hydroxyl group amount 22 mol%) To 100 parts by mass, 60 parts by mass of triethylene glycol-di-2-ethylhexanoate (3GO) was added as a plasticizer, and the mixture was sufficiently kneaded with a dispersing roll to obtain a resin composition for a sound insulating layer.

[0098] (2) Preparation of resin composition for protective layer

[0099] With respect to polyvinyl butyral obtained by acetalizing polyvinyl alcohol having an average degree of polymerization of 1700 with n-butyraldehyde (1 mol% of acetyl groups, 69 mol% of butyral groups, 30 mol% of hydroxyl groups) To 100 parts by mass, 40 parts by mass of triethylene glycol-di-2-ethylhexanoate (3GO) was added as a plasticizer, and the mixt...

Embodiment 2～5

[0110] An interlayer film for laminated glass was produced by the same method as in Example 1, except that the interval between the concave portions on the surfaces of the A layer and the C layer and the groove depth (Rzg) of the concave portion were as shown in Table 1.

[0111] In addition, in the measurement of the interval of the recessed part of Examples 2-5 and Comparative Examples 1-3, the average value and the maximum value of the shortest distance of the said recessed part were the same.

Embodiment 6～10

[0113] The amount of acetyl groups, the amount of butyral groups, the amount of hydroxyl groups, and the content of plasticizers in the polyvinyl butyral used in the protective layer and the sound-insulating layer were changed as shown in Table 1. An interlayer film for laminated glass was produced by the same method as in Example 1, except that the groove depth (Rzg) of the space and the concave portion was as shown in Table 1. In addition, the polyvinyl butyral used for the protective layer and the sound insulating layer was obtained by acetalizing polyvinyl alcohol having an average degree of polymerization of 1,700 with n-butyraldehyde.

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Abstract

The purpose of the present invention is to provide a laminated glass interlayer and a laminated glass that includes the laminated glass interlayer, the laminated glass interlayer comprising two or more layered resin layers, having excellent degassing properties during a laminated glass production process, and being capable of preventing the occurrence of ghost images. The present invention is a laminated glass interlayer comprising two or more layered resin layers, at least one surface of the laminated glass interlayer having a plurality of concave portions and a plurality of convex portions. Bottom portions of the concave portions have continuous groove shapes, and adjacent concave portions are parallel and arranged regularly in lines. On the surface that has the plurality of concave portions and the plurality of convex portions, the groove depths (Rzg) of the concave portions are 10-40 [mu]m as measured in accordance with JIS-B0601 (1994), and the intervals between adjacent concave portions are 1000-1500 [mu]m.

Description

technical field [0001] The present invention relates to an interlayer film for laminated glass, which is an interlayer film for laminated glass in which two or more resin layers are laminated, and a laminated glass containing the interlayer film for laminated glass, which is used in the production of laminated glass. It has excellent degassing properties during the process and can prevent ghosts from occurring. Background technique [0002] For window glass of automobiles, airplanes, buildings, etc., a laminated glass is widely used in which an interlayer film for laminated glass containing plasticized polyvinyl butyral is sandwiched between two glass plates , and the laminated glass obtained by bonding them to each other. [0003] The interlayer film for laminated glass is not only composed of a single resin layer, but may be composed of a laminate of two or more resin layers. By having the first resin layer and the second resin layer as two or more resin layers, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C27/12B32B3/30
CPCB32B3/30B32B17/10587B32B2250/03B32B17/10036B32B17/10165B32B17/10559B32B17/10761B32B27/08B32B2419/00B32B2605/08B32B2605/18B32B3/28B32B17/1055C03C27/06
Inventor 北野纮史松本学中山和彦
Owner SEKISUI CHEM CO LTD
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