JP2000001342A - Multilayered glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a multilayered glass having a decreased number of parts, excellent productivity and a single sealed structure without requiring ageing, by forming one body of a spacer and a frame in which the peripheral part of glass can be fitted and by not filling the spacer with a drying agent. SOLUTION: Plural glass sheets are disposed in the thickness direction with a spacer 5 interposed, and the space formed between the peripheral part of the spacer 5 and plural glass sheets is filled with a sealing material in which a drying agent is preliminarily kneaded. The spacer 5 and the frame 3 in which the peripheral part of the glass can be fitted are formed into one body, and the spacer 5 is not filled with a drying agent as a single state. As for the drying agent, zeolite, silica gel and alumina are preferably used. Preferably the sealing material contains the following satd. hydrocarbon polymers. The polymers have at least one hydrolyzable group at the molecular chain end bonded to silicon atoms which can be crosslinked by forming siloxane bonds, and have 500 to 30000 mol.wt. (preferably isobutylene-based polymers).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a spacer (5)
The present invention relates to a single-sealed double-glazed glass characterized in that a frame (3) into which a peripheral portion of the glass and the glass can be fitted is integrated and a desiccant is not filled in the spacer (5).

[0002]

2. Description of the Related Art Conventionally, as a double glazing, a primary seal (mainly hot-melt butyl) for blocking water vapor between a spacer and a plurality of glasses, and a spacer formed between the periphery of the spacer and a plurality of glass sheets. Structure in the gap (adhesion)
Two kinds of sealing materials of a secondary seal (mainly a polysulfide-based sealing material) for providing strength were required.

[0003] In addition, since the secondary seal is often in the form of a product in a state where the secondary seal is exposed, it cannot be shipped until the secondary sealing material is hardened, so that curing for at least 2 to 3 hours and a wide area are required. Was. In addition, at the site of mounting the double-glazed glass, the double-glazed glass is elastically double-bonded between the frame and the double-glazed glass in the mounting groove of the frame such as the window frame or frame to be mounted. The member holding the laminated glass was fitted to the periphery of the double-glazed glass, and the entire elastic retaining member was fitted to the frame and attached.

[0004]

The above-mentioned conventional double glazing has the following three problems. That is, the first point is that two types of seals, a primary seal and a secondary seal, are required at the time of manufacturing, and a step of applying or filling two types of seals is required accordingly. 2
The second point is that since the secondary sealing material is exposed, carrying it before curing the sealing material may stain your hands, clothes, and even the glass surface itself. To prevent this, cure the sealing material. This requires a lot of time, so that the production efficiency is low, and that the glass corner is likely to be broken due to the exposed glass end face. The third point is that it is necessary to attach the multi-layer glass after curing to the frame. The fourth point is that it is necessary to enclose a desiccant inside the spacer in advance.

It is an object of the present invention to provide a single-sealed double-glazed glass which eliminates the above-mentioned problems, reduces the number of parts, is excellent in productivity and requires no curing, and a method for producing the same.

[0006]

Means for Solving the Problems The inventors of the present invention have studied to solve this problem, and as a result, have found a technique for simultaneously solving the above problems. As a result, a single-sealing-type sealing material for double-glazing which can achieve the above object can be obtained, and the present invention has been completed.

According to the present invention, a spacer (5) and a frame (3) into which a peripheral portion of glass can be fitted are integrated, and
The present invention relates to a single-sealed double-glazed glass characterized in that a desiccant is not filled in a spacer (5).

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. A first feature for achieving this object is that a frame (3) in which the spacer (5) and the peripheral portion of the glass can be fitted so that the double glazing does not need to be attached to the frame.
And fixing the plate glass between the spacer (5) and the frame (3). The spacer (5)
When the metal (3) is made of metal,
There are aluminum extruded or steel roll-formed products, and stainless steel products. In consideration of the heat insulating properties of the double-glazed glass, resin extruded products such as polycarbonate and vinyl chloride are preferable. (Corresponding to claim 1) A second feature is that a plurality of glass sheets (1) are provided in advance in the thickness direction via a spacer (5), and the glass sheet (1) is fixed, and then a peripheral portion of the spacer (5) is formed. A gap (4) formed between the plurality of glass sheets (1) and a frame (3) which can be fitted therein is to be filled with a sealing material (S1).

The sealing material includes a spacer (5).
A desiccant is sufficiently kneaded in advance so that a gap (4) formed between the peripheral portion and the frame (3) which can be fitted into the plurality of glass sheets (1) is not clouded. Zeolite, alumina, silica gel and the like are suitable for the desiccant.
(Corresponding to claim 2) The third feature is that the water vapor permeability coefficient of the sealing material (S1) is low in moisture permeability, and the water vapor permeability coefficient of the low moisture permeable sealing material is preferable. Is 3
000 × 10 ^-13 cm ³ · cm / cm ² · Pa
The following rubbers or elastomers are preferable, and among them, hydrocarbon-based sealing materials such as butyl rubber, polyisobutylene, halogenated butyl rubber, and hydrogenated polyisoprene made of a copolymer mainly composed of isobutylene and isoprene are preferable. These sealing materials (S1) may be used alone or in a blend of two or more.

Examples of the sealing material (S1) other than the above-mentioned rubber or elastomer include polyethylene, polypropylene, vinylidene chloride, polyvinyl chloride and the like, and copolymers of monomers constituting these polymers, or their copolymers. Modified products are preferred, and crystalline polyolefins are preferred, and high density polyethylene is particularly preferred. These thermoplastic resins have a water vapor transmission coefficient of 300
0 × is preferably from ^{10 -1 3 cm 3 · cm /} cm2 · sec · Pa, 2 · 500 × 10 -13 cm 3 · cm / cm
sec · Pa or less is more preferable. (Corresponding to claim 3) The fourth feature is that the saturated hydrocarbon polymer contained in the sealing material (S1) component has a hydrolyzable group bonded to a silicon atom and forms a siloxane bond. In other words, a saturated hydrocarbon polymer having at least one reactive silicon group at the molecular chain terminal, which is a silicon-containing group capable of being crosslinked by the above, is used. By using the saturated hydrocarbon polymer, the sealing material (S1) can be provided with the water vapor barrier property of the conventional primary seal and the structural strength of the secondary seal. The saturated hydrocarbon polymer having a reactive silicon group is a polymer substantially containing no carbon-carbon unsaturated bond other than the aromatic ring, and is, for example, polyethylene, polypropylene, polyisobutylene, hydrogenated polybutadiene, hydrogenated And polyisoprene. The number average molecular weight of the saturated hydrocarbon polymer, preferably the isobutylene polymer or the hydrogenated polybutadiene polymer is preferably about 500 to 30,000, and especially about 1,000 to 15,000 of liquid or fluid. Those having properties are preferred from the viewpoint of easy handling.

The content of the saturated hydrocarbon polymer having a reactive silicon group in the sealing material (S1) of the present invention is preferably 5% by weight to 40% by weight, more preferably 10% by weight to 30% by weight. More preferably, 15% by weight or more 2
5 wt% or less is particularly preferred. (Corresponding to claim 4) The fifth feature is that the saturated hydrocarbon polymer contained in the sealing material (S1) is represented by the general formula (1):

[0012]

Embedded image

(Wherein R ¹ and R ² are each independently an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms or (R ′) ₃ SiO- (R 'is each independently a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms), and X is a triorganosiloxy group.
Each is independently a hydroxyl group or a hydrolyzable group. Further, a is 0, 1, 2, 3, and b is 0,
It is either 1 or 2, and a and b do not become 0 at the same time. M is 0 or an integer of 1 to 19)
It has a group represented by these.

Examples of the hydrolyzable group include generally used groups such as a hydrogen atom, an alkoxy group, an acyloxy group, a ketoximate group, an amino group, an amide group, an aminooxy group, a mercapto group and an alkenyloxy group. However, an alkoxy group is particularly preferable because it has mild hydrolyzability and is easy to handle. A hydrolyzable group or a hydroxyl group can be bonded to one silicon atom in a range of 1 to 3, and (a + mb) is preferably in a range of 1 to 5. When two or more hydrolyzable groups or hydroxyl groups are bonded to the reactive silicon group, they may be the same or different. The number of reactive silicon groups in one molecule of the saturated hydrocarbon-based polymer is one or more, preferably 1.1 to 5. If the number of reactive silicon groups contained in the molecule is less than one, the curability may be insufficient and good rubber elasticity may not be obtained. (Claims 5 and 6
In addition, as an example of the sealing material (S1) that can be suitably used for the single seal of the present invention, sealing when a polyisobutylene oligomer having a hydrolyzable silicon group at a terminal is used as a saturated hydrocarbon polymer. The method for producing the material (S1) is as follows.

Saturated hydrocarbon polymer (Kanebuchi Chemical Co., Ltd.)
100 parts of Epion (EP303S) manufactured by Idemitsu Kosan Co., Ltd.
90 parts of Diana Process PS-32 (trade name), heavy calcium carbonate (Shiraishi Calcium Co., Ltd., trade name Ryton)
A) 180 parts, colloidal calcium carbonate (Shiraishi Industry Co., Ltd.)
50 parts, Talc (manufactured by Maruo Calcium Co., Ltd., trade name LMR) 100 parts, anti-aging agent (Ciba Geigy Co., Ltd., trade name Irganox 1010)
1 copy, (Sumitomo Chemical Co., Ltd., trade name Sumisorb 400)
1 part, Sankyo LS-765 (trade name, manufactured by Sankyo Co., Ltd.)
1 part, 3 parts of light stabilizer (manufactured by Sanshin Chemical Co., Ltd., trade name: Sandant NBC), 3 parts of photocurable resin (manufactured by Toagosei Co., Ltd., trade name: Aronix M400), thixotropy-imparting agent (Kusumoto Kasei) 2 parts of Dispalon # 305 (trade name, manufactured by K.K.), γ-glycidoxypropyltrimethoxysilane (trade name: A-18, manufactured by Nippon Unicar Co., Ltd.)
7) 3 parts, γ-isocyanatopropyltriethoxysilane (trade name: A-1310, manufactured by Nippon Unicar Co., Ltd.)
Parts, and knead well with a three paint roll to obtain the main ingredient of S1.

Also, 30 parts of zeolite 3A (manufactured by Wako Pure Chemical Industries, Ltd.) are mixed in advance with 4 parts of water (deionized water) to prepare 10 parts of water-containing zeolite.
Dibutyltin dimethoxide 4 as a silanol condensation catalyst
4 parts (manufactured by Aldrich Chemical Co., Ltd.), 16 parts of paraffin-based process oil (manufactured by Idemitsu Kosan Co., Ltd., trade name: Diana Process PS-32), heavy calcium carbonate (manufactured by Maruo Calcium Co., Ltd., trade name: Snow) Light SS) 10
Section, carbon black (Mitsubishi Kasei Co., Ltd., product name CB
# 30) 2.5 parts were manually mixed and kneaded in a disposable cup, and then the operation of stirring at 10,000 rpm for 10 minutes using an Excel Auto Homogenizer manufactured by Nippon Seiki Seisakusho Co., Ltd. was performed three times. Thereby, the curing agent of the sealing material (S1) can be adjusted.

The ratio of the above main agent to the curing agent is weighed so as to be the ratio of the total number of the main agent components to the total number of the curing agent components.
After sufficiently kneading to form a sealing material (S1), the compound may be filled into a double-glazed glass frame and cured.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited by these. Example 1 The method for manufacturing a double-glazed glass according to Example 1 will be specifically described. First, as shown in FIG. 1, a frame which can be fitted into a glass peripheral portion integrated with a conventional spacer portion is formed. Cut to the length according to the double glazing. Next, as shown in FIG. 2, a frame (3) into which the peripheral portion of the glass integrated with the spacer (5) can be fitted is provided.
A plurality of glass sheets (1) are fixed. Finally, as shown in FIG. 2, a gap (4) formed between the periphery of the spacer (5), the plurality of glass sheets (1), and the frame (3) into which the periphery of the glass can be fitted. Sealant (S
1) is filled to form a double-glazed glass body.

As shown in FIG. 1, the spacer includes a spacer (5) main body and a frame (3) into which a peripheral portion of glass can be fitted. The spacer is provided with a through-hole or a slit-like gap (6) that can communicate with a portion in which the sealing material (S1) is included, with respect to an enclosed space formed by a sheet glass. In addition, a sealing material (S1) for filling a space formed between the frame (3) into which the periphery of the spacer (5), the plurality of glass sheets (1) and the glass can be fitted.
Has a number average molecular weight of 5 having a hydrolyzable functional group at a terminal.
Fillers, plasticizers, adhesion-imparting agents, curing catalysts, and a necessary and sufficient amount of polyisobutylene-based oligomers of about 000 to 15,000 to absorb the moisture or volatile components in the space inside the glass and prevent the glass inner surface from fogging. It contains zeolite and the like, and its moisture permeability is as low as hot melt butyl used for the conventional primary seal, and is equal to or higher than that of the polysulfide-based sealing material used for the conventional secondary seal. Above glass adhesion,
Has mechanical strength. The sealing material (S1) is in a paste state immediately after filling and can be processed into an arbitrary shape. However, by curing, the sealing material (S1), the spacer (5) and the peripheral portion of the glass can be firmly fitted. Adhere to the frame (3). Example 2 Example 2 shows a double glazing having a structure other than that of Example 1.

FIG. 3 is a cross-sectional view of the frame body integrated with the spacer of the second embodiment, and FIG. 4 is a cross-sectional view of the double-layer glass of the second embodiment. Example 3 Example 3 also shows a double glazing having a structure other than that of Example 1.
FIG. 5 is a cross-sectional view of the frame body integrated with the spacer of the second embodiment, and FIG. 6 is a cross-sectional view of the multilayer glass of the third embodiment.

[0021]

An advantage of the present invention is that the use of a sealing material having low moisture permeability reduces the number of parts and provides a single-sealed double-glazed glass which is excellent in productivity and requires no curing. .

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a spacer according to a first embodiment.

FIG. 2 is a cross-sectional view of a double-layer glass of Example 1.

FIG. 3 is a sectional view of a spacer according to a second embodiment.

FIG. 4 is a cross-sectional view of a double glazing of Example 2.

FIG. 5 is a sectional view of a spacer according to a third embodiment.

FIG. 6 is a cross-sectional view of a double-layer glass according to a third embodiment.

[Explanation of symbols]

 1: plate glass 2: frame integrated with spacer 3: frame 4: air gap 5: spacer 6: through-hole or slit-shaped gap S1: sealing material

Claims (6)

[Claims] 1. A single seal type wherein a spacer (5) and a frame (3) into which a peripheral portion of glass can be fitted are integrated, and the inside of the spacer (5) is not filled only with a desiccant. Insulated glass 2. A plurality of sheet glasses (1) are juxtaposed in the thickness direction via a spacer (5), and said spacer (5) is provided.
A gap (4) formed between the peripheral portion and the plurality of glass sheets (1) is filled with a sealing material (S1) in which a desiccant has been kneaded in advance, and the spacer (5) and the peripheral portion of the glass can be fitted. Single-sealed double glazing characterized in that the frame (3) is integral and the inside of the spacer (5) is not filled with a desiccant alone. 3. The water vapor transmission coefficient of the sealing material (S1) is 3000 × 10 ⁻¹³ cm ³ · cm / cm ² · se.
The double-glazed glass according to claim 1 or 2, which is c · Pa or less. 4. The sealing material (S1) according to claim 3,
Contains a saturated hydrocarbon polymer having at least one hydrolyzable group bonded to a silicon atom which can be crosslinked by forming a siloxane bond at a molecular chain terminal and having a molecular weight of 500 to 30,000. Double glass according to 1-3 5. The saturated hydrocarbon polymer is represented by the general formula (1): (Wherein, R ¹ and R ² each independently represent a carbon number of 1 to
20 alkyl groups, aryl groups having 6 to 20 carbon atoms, aralkyl groups having 7 to 20 carbon atoms or (R ′) ₃ SiO—
(R ′ is each independently a substituted or unsubstituted hydrocarbon group having 1 to 20 carbon atoms). X is each independently a hydroxyl group or a hydrolyzable group. Further, a is 0, 1,
B is 0, 1, or 2, and a and b do not become 0 at the same time. Also, m
Is an integer of 0 or an integer of from 1 to 19). 6. The double glass according to claim 5, wherein X in the group represented by the general formula (1) is an alkoxysilyl group.