Intermediate film for laminated glass and laminated glass

Patent metadata

Field	Value
Publication number	US-2016152007-A1
Application number	US-201414898119-A
Country	US
Kind code	A1
Filing date	Jun 13, 2014
Priority date	Jun 14, 2013
Publication date	Jun 2, 2016
Grant date	—

Abstract

There is provided an interlayer film for laminated glass with which any of the anti-glare property, light resistance and visibility in a dark place of laminated glass can be enhanced. The interlayer film for laminated glass according to the present invention includes a thermoplastic resin and has a ratio L′s/Ls of the relative scotopic vision luminance L′s to the relative photopic vision luminance Ls to be greater than or equal to 1.0 at the time of preparing laminated glass with two sheets of clear glass in accordance with JIS R3202 (1996), and the interlayer film for laminated glass according to the present invention preferably includes at least one kind of ingredient among a phthalocyanine compound, a naphthalocyanine compound, an anthracyanine compound and an indanthrene compound which have a maximum absorption wavelength greater than or equal to 550 nm and less than or equal to 750 nm.

First claim

1 . An interlayer film for laminated glass, comprising a thermoplastic resin and provided with a first configuration or a second configuration,
the first configuration including at least one kind of ingredient among a phthalocyanine compound with a maximum absorption wavelength greater than or equal to 550 nm and less than or equal to 750 nm, a naphthalocyanine compound with a maximum absorption wavelength greater than or equal to 550 nm and less than or equal to 750 nm, an anthracyanine compound with a maximum absorption wavelength greater than or equal to 550 nm and less than or equal to 750 nm and an indanthrene compound with a maximum absorption wavelength greater than or equal to 550 nm and less than or equal to 750 nm is contained in the interlayer film, the second configuration having an absolute value of the difference in visible light transmittance ΔA−Y represented by the formula: (A−Y after irradiated with ultraviolet rays)−(A−Y before irradiated with ultraviolet rays) is less than or equal to 1.0 at the time of preparing laminated glass with two sheets of clear glass in accordance with JIS R3202 (1996) and then irradiating the prepared laminated glass with ultraviolet rays for 500 hours using a quartz glass mercury lamp of 750 W in accordance with JIS R3205, a ratio L′s/Ls of the relative scotopic vision luminance L′s to the relative photopic vision luminance Ls being greater than or equal to 1.0 at the time of preparing laminated glass with two sheets of clear glass in accordance with JIS R3202 (1996) in the case where the interlayer film includes the first configuration, and a ratio L′s/Ls of the relative scotopic vision luminance L′s to the relative photopic vision luminance Ls being greater than 1.0 at the time of preparing laminated glass with two sheets of clear glass in accordance with JIS R3202 (1996) in the case where the interlayer film includes the second configuration.

2 . The interlayer film for laminated glass according to claim 1 , comprising a thermoplastic resin and at least one kind of ingredient among a phthalocyanine compound with a maximum absorption wavelength greater than or equal to 550 nm and less than or equal to 750 nm, a naphthalocyanine compound with a maximum absorption wavelength greater than or equal to 550 nm and less than or equal to 750 nm, an anthracyanine compound with a maximum absorption wavelength greater than or equal to 550 nm and less than or equal to 750 nm and an indanthrene compound with a maximum absorption wavelength greater than or equal to 550 nm and less than or equal to 750 nm,
wherein a ratio L′s/Ls of the relative scotopic vision luminance L′s to the relative photopic vision luminance Ls is greater than or equal to 1.0 at the time of preparing laminated glass with two sheets of clear glass in accordance with JIS R3202 (1996).

3 . The interlayer film for laminated glass according to claim 2 ,
wherein the L′s/Ls is greater than 1.0.

4 . The interlayer film for laminated glass according to claim 1 , comprising a thermoplastic resin and
having an absolute value of the difference in visible light transmittance ΔA−Y represented by the formula: (A−Y after irradiated with ultraviolet rays)−(A−Y before irradiated with ultraviolet rays) to be less than or equal to 1.0 at the time of preparing laminated glass with two sheets of clear glass in accordance with JIS R3202 (1996) and then irradiating the prepared laminated glass with ultraviolet rays for 500 hours using a quartz glass mercury lamp of 750 W in accordance with JIS R3205, wherein a ratio L′s/Ls of the relative scotopic vision luminance L′s to the relative photopic vision luminance Ls is greater than 1.0 at the time of preparing laminated glass with two sheets of clear glass in accordance with JIS R3202 (1996).

5 . The interlayer film for laminated glass according to claim 1 , further comprising at least one kind of metal salt among an alkali metal salt and an alkaline earth metal salt.

6 . The interlayer film for laminated glass according to claim 1 ,
wherein the thermoplastic resin is a polyvinyl acetal resin.

7 . The interlayer film for laminated glass according to claim 1 , further comprising a plasticizer.

8 . Laminated glass, comprising:
a first laminated glass member; a second laminated glass member; and an interlayer film for laminated glass according to claim 1 , wherein the interlayer film for laminated glass is arranged between the first laminated glass member and the second laminated glass member.

9 . The interlayer film for laminated glass according to claim 2 , comprising a thermoplastic resin and
having an absolute value of the difference in visible light transmittance ΔA−Y represented by the formula: (A−Y after irradiated with ultraviolet rays)−(A−Y before irradiated with ultraviolet rays) to be less than or equal to 1.0 at the time of preparing laminated glass with two sheets of clear glass in accordance with JIS R3202 (1996) and then irradiating the prepared laminated glass with ultraviolet rays for 500 hours using a quartz glass mercury lamp of 750 W in accordance with JIS R3205, wherein a ratio L′s/Ls of the relative scotopic vision luminance L′s to the relative photopic vision luminance Ls is greater than 1.0 at the time of preparing laminated glass with two sheets of clear glass in accordance with JIS R3202 (1996).

10 . The interlayer film for laminated glass according to claim 2 , further comprising at least one kind of metal salt among an alkali metal salt and an alkaline earth metal salt.

11 . The interlayer film for laminated glass according to claim 2 ,
wherein the thermoplastic resin is a polyvinyl acetal resin.

12 . The interlayer film for laminated glass according to claim 2 , further comprising a plasticizer.

13 . Laminated glass, comprising:
a first laminated glass member; a second laminated glass member; and an interlayer film for laminated glass according to claim 2 , wherein the interlayer film for laminated glass is arranged between the first laminated glass member and the second laminated glass member.

Assignees

• Sekisui Chemical Co Ltd

Inventors

• Tsunoda Ryuta
• Izu Yasuyuki

Classifications

• B32B17/10761 Primary

  containing vinyl acetal · CPC title

• B32B2307/408

  Matt, dull surface · CPC title

• C03C27/06

  Joining glass to glass by processes other than fusing (fusing C03B23/20; units for use as elements for closing wall or like openings and comprising two or more parallel glass panes in spaced relationship, the panes being permanently secured together E06B3/66) · CPC title

• C08J5/18

  Manufacture of films or sheets · CPC title

• B32B17/10036

  comprising two outer glass sheets · CPC title