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Interlayer for laminated glass, and laminated glass

A technology of laminated glass and interlayer film, applied in the direction of glass/slag layered products, windshields, layered products, etc.

Active Publication Date: 2020-01-03
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 and heat are applied to the laminated glass.

Method used

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  • Interlayer for laminated glass, and laminated glass
  • Interlayer for laminated glass, and laminated glass
  • Interlayer for laminated glass, and laminated glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7 and comparative example 1

[0333] The following light stabilizers were used.

[0334] BASF company manufactures "Tinuvin 770"

[0335] BASF company manufactures "Tinuvin 765"

[0336]BASF company manufactures "Tinuvin 123"

[0337] "LA-63P" manufactured by ADEKA Corporation

[0338] Preparation of the composition for forming the interlayer:

[0339] The following mixing components were mixed and sufficiently kneaded with a mixing roll to obtain a composition for forming an intermediate film.

[0340] Polyvinyl acetal resin (hydroxyl content 30.5 mol%, acetylation degree 1 mol%, acetalization degree 68.5 mol%) 100 parts by weight

[0341] 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) as plasticizer

[0342] An ultraviolet shielding agent (2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-5-chlorobenzotriazole) in an amount of 0.2% by weight in the obtained interlayer film

[0343] Antioxidant (2,6-di-tert-butyl-p-cresol) in an amount of 0.2% by weight in the obtained intermediate film ...

Embodiment 8～12 and comparative example 2

[0351] Use the following UV blockers.

[0352] BASF company manufactures "Tinuvin 405"

[0353] Clariant Company prepares "Hostavin PR-25"

[0354] BASF company manufactures "Tinuvin 326"

[0355] "Eversorb 89" manufactured by Young Kwang Chemical Co., Ltd.

[0356] The following light stabilizers were used.

[0357] BASF company manufactures "Tinuvin 765"

[0358] BASF company manufactures "Tinuvin 123"

[0359] Preparation of the composition for forming the interlayer:

[0360] The following mixing components were mixed and sufficiently kneaded with a mixing roll to obtain a composition for forming an intermediate film.

[0361] Polyvinyl acetal resin (hydroxyl content 30.5 mol%, acetylation degree 1 mol%, acetalization degree 68.5 mol%) 100 parts by weight

[0362] 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) as plasticizer

[0363] UV shielding agents shown in Table 2 below

[0364] Antioxidant (2,6-di-tert-butyl-p-cresol) in an amount of 0.2...

Embodiment 13～19 and comparative example 3～6

[0371] Antioxidants are used below.

[0372] "Sumilizer BHT" manufactured by Sumitomo Chemical Industries, Ltd., "BHT" in the table

[0373] "IRGANOX 245" manufactured by BASF Corporation

[0374] "ADEKASTAB AO-40" manufactured by ADEKA company, "AO-40" in the table

[0375] "IRGANOX 1010" manufactured by BASF Corporation

[0376] The following light stabilizers were used.

[0377] BASF company manufactures "Tinuvin 765"

[0378] BASF company manufactures "Tinuvin 123"

[0379] Preparation of the composition for forming the interlayer:

[0380] The following mixing components were mixed and sufficiently kneaded with a mixing roll to obtain a composition for forming an intermediate film.

[0381] Polyvinyl acetal resin (hydroxyl content 30.5 mol%, acetylation degree 1 mol%, acetalization degree 68.5 mol%) 100 parts by weight

[0382] 40 parts by weight of triethylene glycol di-2-ethylhexanoate (3GO) as plasticizer

[0383] An ultraviolet shielding agent (2-(2-hydroxy-3-...

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Abstract

An interlayer for laminated glass is provided which is capable of inhibiting the formation of air gaps in the interlayer at ends of a laminated glass. An interlayer for laminated glass according to the present invention has a length direction and a width direction, and is provided with: feature A, namely including a light stabilizer, and having a distribution in the content of the light stabilizerin the width direction which is such that the content of the light stabilizer is high at one end side in the width direction; feature B, namely including an ultraviolet shielding agent, and having adistribution in the content of the ultraviolet shielding agent in the width direction which is such that the content of the ultraviolet shielding agent is high at the one end side in the width direction; or feature C, namely including an antioxidant, and having a distribution in the content of the antioxidant in the width direction which is such that the content of the antioxidant is high at the one end side in the width direction.

Description

technical field [0001] The invention relates to an interlayer film for laminated glass containing a light stabilizer, an ultraviolet shielding agent or an antioxidant. Furthermore, the present invention relates to a laminated glass using the interlayer film for laminated glass. Background technique [0002] Even if the laminated glass is damaged by an external impact, the amount of scattered glass fragments is small, and it is excellent in safety. Therefore, the laminated glass is widely used in automobiles, railway vehicles, airplanes, ships, buildings, and the like. The laminated glass is produced by interposing an interlayer film for laminated glass between a pair of glass plates. [0003] As an example of the laminated glass, the following Patent Document 1 discloses an interlayer film having low yellowing tendency, high transmittance to UV-A rays and visible light, and low transmittance to UV-B rays. The intermediate film contains polyvinyl acetal, a plasticizer, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C27/12B32B3/10B32B17/10B32B27/18B32B27/30B60J1/00B60J1/02C08J5/12C08L29/14C08L101/00
CPCB60J1/00B60J1/02C08J5/12C08L29/14C08L101/00B32B17/10036B32B17/10678B32B17/10761B32B17/1066B32B2250/03B32B27/18B32B27/22B32B27/30B32B3/10B60J1/001B32B27/306B32B2307/402B32B2307/71B32B2605/006
Inventor 吉田章吾冈野萌松本学中山和彦
Owner SEKISUI CHEM CO LTD
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