JP2003095700A - Aging film for glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aging film for glasses having good flame resistance and migration property capable of preventing a metal thin film layer on the surface of a glass having a transparent metal thin film from contamination when the aging film is adhered to the glass having the transparent metal thin film. SOLUTION: The aging film for a glass contains 20-32 pts.wt. of a trimellitic acid ester-based and/or polyester-based plasicizer and 8-20 pts.wt. of tricresyl phosphate (the total amount of both is 30-50 pts.wt.) to 100 pts.wt. of a vinyl chloride-based resin. The aging film is especially suitable for a glass having a transparent metal thin film.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curing film to be attached to a window glass or a door glass during construction work of a building such as a building.

[0002]

2. Description of the Related Art In the construction work of buildings such as buildings, a synthetic resin film is attached to the surface of the glass to prevent the fitted window glass and door glass from getting dirty or scratched during the construction, and then the construction work is completed. Later peeled from the glass. This synthetic resin film is called a curing film for glass, and a flame-retardant film has been used to prevent ignition due to sparks during construction. In the past, flame retardancy was obtained by combining a vinyl chloride resin with a phosphate ester plasticizer such as tricresyl phosphate or trioctyl phosphate, which are flame retardant plasticizers, and a phthalate ester plasticizer in combination. Films have been used.

In recent years, glass having a transparent metal thin film layer on its surface (so-called glass with a transparent metal thin film) cuts off solar heat by a mirror effect that reflects sunlight appropriately and improves cooling efficiency. It is often used for window glass and door glass because of its good appearance.
However, in the window glass using this glass with a transparent metal thin film, when using the above-mentioned conventional flame retardant film as a curing film, the metal thin film layer on the glass surface after curing film peeling is said to be in a contaminated state. There is a problem.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and is excellent in flame retardancy and migration property, and is a metal thin film layer on a glass surface even when it is attached to a glass with a transparent metal thin film. It is an object of the present invention to provide a curing film for glass that does not contaminate glass.

[0005]

As a result of studies to solve the above problems, the present inventor found that the above-mentioned metal thin film layer on the glass surface is contaminated when the plastic compounded with the vinyl chloride resin is used. Knowing that there is a problem with the compatibility between the agent and the thin metal film on the glass surface, as a result of various experiments on various plasticizers, by using a combination of specific plasticizers,
The present invention has been completed by finding that the above problems can be solved.

That is, the present invention relates to a vinyl chloride resin 1
20 to 32 parts by weight of trimellitic acid ester-based plasticizer and / or polyester-based plasticizer and 8 to 20 parts by weight of tricresyl phosphate (however, the total amount of both is 30 to 50 parts by weight) is mixed with 00 parts by weight. It is a protective film for glass, especially a protective film for glass with a transparent metal thin film.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The vinyl chloride resin used in the present invention is a homopolymer of vinyl chloride or a copolymer of vinyl chloride with other vinyl monomers. Examples of the trimellitic acid ester-based plasticizer include triisooctyl trimellitate, tri-n-octyl trimellitate,
Trimellitic acid triisononyl, trimellitic acid tri-
N-nonyl, triisodecyl trimellitate, tri-n-decyl trimellitate and the like are used.

As the polyester type plasticizer, dibasic acids such as adipic acid, sebacic acid and phthalic acid, and 1,1
Synthesized by reacting with a glycol such as 2-propylene glycol to form a polyester having 8 to 8 carbon atoms.
By using 10 fatty acids and higher alcohols as the endcapping agent,
The thing which adjusted molecular weight to 800-4000 is used. For example, PN-310 (trade name of adipic acid type polyester manufactured by Asahi Denka Co., Ltd., molecular weight 2500) is preferably used.

The trimellitic acid ester plasticizer and the polyester plasticizer may be used alone,
You may use together. These trimellitic acid ester plasticizers and polyester plasticizers are used in a total amount of 20 to 32 parts by weight based on 100 parts by weight of the vinyl chloride resin. Also, tricresyl phosphate is a vinyl chloride resin 10
8 to 20 parts by weight is used with respect to 0 parts by weight. The total amount of trimellitic acid ester plasticizer and / or polyester plasticizer and tricresyl phosphate is 30 to 50 parts by weight based on 100 parts by weight of vinyl chloride resin. Within this range, the flexibility of the film is appropriate and the workability is good. Further, when the amount of tricresyl phosphate compounded is less than 8 parts by weight with respect to 100 parts by weight of vinyl chloride resin, the flame retardant effect is weak, and when it exceeds 20 parts by weight, synthetic resin parts such as ABS resin and polystyrene. Therefore, the tendency to generate contamination on the surfaces of these synthetic resin parts becomes stronger.

The protective film for glass of the present invention is manufactured as follows. That is, a vinyl chloride-based resin, a trimellitic acid ester-based plasticizer and / or a polyester-based plasticizer, and tricresyl phosphate are blended at a predetermined ratio, and if necessary, a flame retardant, an antistatic agent, or ultraviolet absorption. Various additives such as agents, stabilizers, antioxidants, pigments, fillers, and antiblocking agents are blended, and a film is formed by extrusion molding using a T die, calender molding, or the like.
The thickness of the film is 60 to 400 μm.

The protective film for glass of the present invention is flame retardant,
It has excellent transferability and can be applied to ordinary glass,
When applied to glass with a transparent metal thin film, it has an advantage that it does not contaminate the metal thin film layer on the surface of the glass unlike conventional curing films for glass. Glass with a transparent metal thin film is commercially available, for example, under the trade names of Suncut Σ (manufactured by Asahi Glass Co., Ltd.), Reflight (manufactured by Nippon Sheet Glass Co., Ltd.), and Parrex (manufactured by Central Glass Co., Ltd.).

Examples 1 to 13 and Comparative Examples 1 to 10 Resin formulations having the component compositions shown in the columns of Examples 1 to 13 and Comparative Examples 1 to 10 in Table 1 were prepared. This was calendered to form a film having a thickness of 100 μm. In Table 1, PVC is polyvinyl chloride having a molecular weight of 1050.
TOTM is triisooctyl trimellitate. P
N-310 is a trade name of Asahi Denka Kogyo Co., Ltd. molecular weight 2500 adipic acid polyester plasticizer. TCP is tricresyl phosphate and TOP is trioctyl phosphate. For these films, flame retardancy,
The migration property and the contamination property of the metal thin film layer on the surface of the glass with the transparent metal thin film were examined. The results are also shown in Table 1.

The flame retardancy was according to JIS A 1322.
Those that passed the second class of flameproof were rated as ◯, and those that failed were rated as x. The migration property was examined as follows. That is, 5 cm
The sample film cut into 5 cm was superposed on each of an ABS resin plate and a polystyrene plate, sandwiched between glass plates, a load of 500 g was applied, and the film was stored at 70 ° C. After 24 hours, the temperature was returned to room temperature, the sample film was peeled from the ABS resin plate and the polystyrene plate, and the surface states of the ABS resin plate and the polystyrene plate were visually inspected. ○ indicates that there is no trace of contamination on the surface, Δ indicates that there is a trace of contamination on a part of the surface, and × indicates that there is a trace of contamination on the entire surface. The contamination of the metal thin film layer on the surface of the glass with the transparent metal thin film (glass contamination) is the glass with the transparent metal thin film (“Suncut Σ” manufactured by Asahi Glass Co., Ltd.)
The surface of the glass was visually inspected by irradiating with Super UV (made by Iwasaki Electric Co., Ltd.) for 100 hours. O indicates that the glass surface is not contaminated, Δ indicates that the glass surface is partially contaminated, and × indicates that the entire glass surface is contaminated.

[0014]

[Table 1]

As is clear from Table 1, the films of Examples 1 to 13 of the present invention were excellent in flame retardancy and migration, and did not contaminate the transparent metal thin film-coated glass. on the other hand,
The films of Comparative Examples 1 to 10 were inferior in any of flame retardancy, migration property and stain resistance of the glass with a transparent metal thin film.

[0016]

EFFECT OF THE INVENTION The curing film for glass of the present invention has excellent flame retardancy and small plasticizer migration. The protective film for glass of the present invention does not contaminate the metal thin film layer on the surface of the glass even when it is attached to the glass with a transparent thin metal film, and thus is particularly suitable for a protective film for glass with a transparent thin metal film.

Continued front page    (72) Inventor Yukihiro Takeda             Okamoto, 1 Kobe, Yoshida-cho, Haibara-gun, Shizuoka Prefecture             Shizuoka Factory Co., Ltd. (72) Inventor Hiroshi Kojima             Okamoto, 1 Kobe, Yoshida-cho, Haibara-gun, Shizuoka Prefecture             Shizuoka Factory Co., Ltd. F-term (reference) 4F071 AA24 AC10 AC15 AE04 AE07                       AH03 BB04 BC01                 4G059 AA01 AC20 AC30 FA11 FA19                 4J002 BD041 CF032 EH146 EW047                       FD022 FD026 FD137 GF00

Claims (2)

[Claims] 1. To 100 parts by weight of a vinyl chloride resin, 20 to 32 parts by weight of a trimellitic acid ester plasticizer and / or polyester plasticizer and 8 to 20 parts by weight of tricresyl phosphate (however, the total of both is included). 30 to 50 parts by weight) is a curing film for glass. 2. A trimellitic acid ester plasticizer and / or a polyester plasticizer, 20 to 32 parts by weight, and tricresyl phosphate, 8 to 20 parts by weight, based on 100 parts by weight of a vinyl chloride resin (however, the total of both is included). 30 to 50 parts by weight), which is a curing film for glass with a transparent metal thin film.