Interlayer film for laminated glass and laminated glass

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

Active Publication Date: 2022-04-19
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 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 1～7 and comparative example 1

[0333] Use the following light stabilizers.

[0334] BASF manufactures "Tinuvin 770"

[0335] BASF manufactures "Tinuvin 765"

[0336] BASF manufactures "Tinuvin 123"

[0337] ADEKA manufactures "LA-63P"

[0338] Preparation of compositions for forming interlayers:

[0339] The following mixed ingredients are mixed and thoroughly mixed with a mixing roller to obtain a composition for forming an interlayer.

[0340] Polyvinyl acetal resin (hydroxyl content 30.5 molars, acetylation 1 molar, acetality 68.5 moles) 100 parts by weight

[0341] Triethylene glycol di-2-ethylhexanoate (3GO) as a plasticizer 40 wt

[0342] In the resulting interlayer becomes 0.2% by weight of the amount of ultraviolet shielding agent (2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-5-chlorobenzotriazole)

[0343] In the resulting interlayer becomes an antioxidant of 0.2% by weight (2,6-di-tert-butyl-cresol)

[0344] Light stabilizers shown in Table 1 below (not used in Comparative Example 1)

[0345] The concent...

Embodiment 8～12 and comparative example 2

[0351] Use the following UV shielding agents.

[0352] BASF manufactures "Tinuvin 405"

[0353] Clariant prepares "Hostavin PR-25"

[0354] BASF manufactures "Tinuvin 326"

[0355] Yongguang Chemical Company manufactures "Eversorb 89"

[0356] Use the following light stabilizers.

[0357] BASF manufactures "Tinuvin 765"

[0358] BASF manufactures "Tinuvin 123"

[0359] Preparation of compositions for forming interlayers:

[0360] The following mixed ingredients are mixed and thoroughly mixed with a mixing roller to obtain a composition for forming an interlayer.

[0361] Polyvinyl acetal resin (hydroxyl content 30.5 molars, acetylation 1 molar, acetality 68.5 moles) 100 parts by weight

[0362] Triethylene glycol di-2-ethylhexanoate (3GO) as a plasticizer 40 wt

[0363] UV shielding agents shown in Table 2 below

[0364] In the resulting interlayer becomes an antioxidant of 0.2% by weight (2,6-di-tert-butyl-cresol)

[0365] The concentration of metal elements (Mg concentration) in...

Embodiment 13～19 and comparative example 3～6

[0371] Antioxidants are used below.

[0372] Sumitomo Chemical Industries manufactures "Sumilizer BHT", table "BHT"

[0373] BASF manufactures "IRGANOX 245"

[0374] ADEKA manufactures "ADEKASTAB AO-40", table "AO-40"

[0375] BASF manufactures "IRGANOX 1010"

[0376] Use the following light stabilizers.

[0377] BASF manufactures "Tinuvin 765"

[0378] BASF manufactures "Tinuvin 123"

[0379] Preparation of compositions for forming interlayers:

[0380] The following mixed ingredients are mixed and thoroughly mixed with a mixing roller to obtain a composition for forming an interlayer.

[0381] Polyvinyl acetal resin (hydroxyl content 30.5 molars, acetylation 1 molar, acetality 68.5 moles) 100 parts by weight

[0382] Triethylene glycol di-2-ethylhexanoate (3GO) as a plasticizer 40 wt

[0383] In the resulting interlayer becomes 0.2% by weight of the amount of ultraviolet shielding agent (2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-5-chlorobenzotriazole)

[0384] The antioxidants s...

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Abstract

The present invention provides an interlayer film for laminated glass that can suppress the generation of voids in the interlayer film at the edge of the laminated glass. The interlayer film for laminated glass of the present invention has a longitudinal direction and a width direction, and has the following configuration A, configuration B, or configuration C. Configuration A: Contains a light stabilizer having a content distribution in the width direction such that the content of the light stabilizer is large at one end side in the width direction. Configuration B: Contains an ultraviolet shielding agent, and the ultraviolet shielding agent has a content distribution in the width direction such that the content of the ultraviolet shielding agent is large at one end side in the width direction. Structure C: Contains an antioxidant, and the content of the antioxidant is distributed in the width direction so that the content of the antioxidant is large at one end side in the width direction.

Description

Technical field [0001] The present invention relates to a laminated glass interlayer containing a light stabilizer, ultraviolet shielding agent or antioxidant. Further, the present invention relates to a laminated glass using the laminated glass with an interlayer film. Background [0002] Even if the laminated glass is damaged by external impacts, the amount of flying fragments of glass is less, and the safety is excellent. Therefore, the laminated glass is widely used in automobiles, railway vehicles, aircraft, ships and buildings. The laminated glass is manufactured by sandwiching the laminated glass with an interlayer between a pair of glass plates. [0003] As an example of the laminated glass, the following patent document 1 discloses an interlayer film having a low yellowing tendency, having a high transmittance to UV-A rays and visible light, and having a low transmittance to UV-B rays. The interlayer contains polyvinyl acetal, a plasticizer and oxalaniline compounds as ...

Claims

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Application Information

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Patent Type & Authority Patents(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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