FR2346428A1 - Glazing which opacifies under heat or increased light intensity - comprises glass with an interlayer of a liq. gel forming acrylic compsn. and an opacifying agent such as polyvinyl caprolactam - Google Patents

Glazing which opacifies under heat or increased light intensity - comprises glass with an interlayer of a liq. gel forming acrylic compsn. and an opacifying agent such as polyvinyl caprolactam

Info

Publication number
FR2346428A1
FR2346428A1 FR7539859A FR7539859A FR2346428A1 FR 2346428 A1 FR2346428 A1 FR 2346428A1 FR 7539859 A FR7539859 A FR 7539859A FR 7539859 A FR7539859 A FR 7539859A FR 2346428 A1 FR2346428 A1 FR 2346428A1
Authority
FR
France
Prior art keywords
liq
interlayer
compsn
light intensity
gel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7539859A
Other languages
French (fr)
Other versions
FR2346428B1 (en
Inventor
Robert Rullier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Industries SA
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Industries SA
Compagnie de Saint Gobain SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Industries SA, Compagnie de Saint Gobain SA filed Critical Saint Gobain Industries SA
Priority to FR7539859A priority Critical patent/FR2346428A1/en
Priority to DE19762658643 priority patent/DE2658643A1/en
Priority to IT7009676A priority patent/IT1071985B/en
Priority to NL7614388A priority patent/NL7614388A/en
Priority to BE173647A priority patent/BE849871A/en
Publication of FR2346428A1 publication Critical patent/FR2346428A1/en
Application granted granted Critical
Publication of FR2346428B1 publication Critical patent/FR2346428B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
    • B32B17/10467—Variable transmission
    • B32B17/10486—Variable transmission photochromic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10899—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin
    • B32B17/10908—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin in liquid form
    • B32B17/10917—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin in liquid form between two pre-positioned glass layers

Abstract

Liq. compsn. comprises (a) a material with variable transparency whose optical transmission properties vary as a fuction of the temp. and/or light intensity and (b) a liq., material capable of forming an irreversible gel, esp. at room temp. Pref. the gel forming material is an acrylic polymer based on acrylamide (I) and/or methylolacrylamide (II). A typical gel forming compsn. contains 5-10% (I), 5-10% (II), 0.3-2% ammonium persulphate (III) as catalyst, 0.3-1 % diethylaminopropionitrile (IV) and water to 100%. Such compsns. are liq. and set to an irreversible gel in about 10 mins. at ambient temp. The compsn. is esp. useful as an interlayer between glass sheets to give a glazing material which becomes more opaque as the temp. or light intensity increases. The presence of the gel material overcomes problems associated with prior art materials of the type when used as an interlayer between glass sheets e.g. in large vertical configurations, due to delamination of the joint between the layers due to the hydrostatic pressure of the liq. interlayer.
FR7539859A 1975-12-26 1975-12-26 Glazing which opacifies under heat or increased light intensity - comprises glass with an interlayer of a liq. gel forming acrylic compsn. and an opacifying agent such as polyvinyl caprolactam Granted FR2346428A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7539859A FR2346428A1 (en) 1975-12-26 1975-12-26 Glazing which opacifies under heat or increased light intensity - comprises glass with an interlayer of a liq. gel forming acrylic compsn. and an opacifying agent such as polyvinyl caprolactam
DE19762658643 DE2658643A1 (en) 1975-12-26 1976-12-23 GLAZING WITH VARIABLE TRANSPARENCY
IT7009676A IT1071985B (en) 1975-12-26 1976-12-24 VARIABLE TRANSPARENCY GLASS
NL7614388A NL7614388A (en) 1975-12-26 1976-12-24 GLAZING WITH VARYING TRANSPARENCY, METHOD OF MANUFACTURE THEREOF, AND PROCESS FOR PREPARATION OF A LIQUID OR ORIENTAL MATERIAL USED THEREOF.
BE173647A BE849871A (en) 1975-12-26 1976-12-24 VARIABLE TRANSPARENCY GLAZING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7539859A FR2346428A1 (en) 1975-12-26 1975-12-26 Glazing which opacifies under heat or increased light intensity - comprises glass with an interlayer of a liq. gel forming acrylic compsn. and an opacifying agent such as polyvinyl caprolactam

Publications (2)

Publication Number Publication Date
FR2346428A1 true FR2346428A1 (en) 1977-10-28
FR2346428B1 FR2346428B1 (en) 1978-08-18

Family

ID=9164213

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7539859A Granted FR2346428A1 (en) 1975-12-26 1975-12-26 Glazing which opacifies under heat or increased light intensity - comprises glass with an interlayer of a liq. gel forming acrylic compsn. and an opacifying agent such as polyvinyl caprolactam

Country Status (5)

Country Link
BE (1) BE849871A (en)
DE (1) DE2658643A1 (en)
FR (1) FR2346428A1 (en)
IT (1) IT1071985B (en)
NL (1) NL7614388A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000063009A1 (en) * 1999-04-16 2000-10-26 MÓCZÁR, Gábor Multi-layered glass structure

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170018B (en) * 1984-12-24 1988-05-25 Canon Kk Thermo-optical device for light modulation
DE4414088A1 (en) * 1994-04-22 1995-10-26 Basf Ag Gels with thermotropic properties
DE19601085A1 (en) * 1996-01-13 1997-07-17 Basf Ag Gels with thermotropic properties
DE19601084A1 (en) * 1996-01-13 1997-07-17 Basf Ag Gels with thermotropic properties

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000063009A1 (en) * 1999-04-16 2000-10-26 MÓCZÁR, Gábor Multi-layered glass structure

Also Published As

Publication number Publication date
BE849871A (en) 1977-06-24
DE2658643A1 (en) 1977-07-14
IT1071985B (en) 1985-04-10
FR2346428B1 (en) 1978-08-18
NL7614388A (en) 1977-06-28

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Legal Events

Date Code Title Description
ST Notification of lapse