Container for cyanoacrylate compositions and pack containing cyanoacrylate compositions

Abstract

To provide a transparent plastic container that is (i) transparent to visible light, (ii) non-transparent to UV light, and (iii) compatible with a curable cyanoacrylate composition.SOLUTION: The present invention relates to a container for curable cyanoacrylate compositions, which is a reservoir for holding the curable cyanoacrylate, wherein the reservoir has an outlet through which the curable cyanoacrylate composition can be dispensed, wherein the reservoir is a reservoir defined by a wall of plastic material, a plastic material formed by a polymer material that is transparent to both visible and UV light, and a UV blocking agent dispersed in the plastic material, wherein the UV blocking agent comprises a UV blocking agent comprising at least one benzotriazole, and wherein the wall of the container is transparent to visible light and non-transparent to UV light.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a container for a curable cyanoacrylate composition and a pack comprising (i) a container for a curable cyanoacrylate composition and (ii) a curable cyanoacrylate composition held within the container.

Background Art

[0002] Curable cyanoacrylate compositions tend not to exhibit storage stability when exposed to ambient light. For example, curable cyanoacrylate compositions typically gel and become solid within a few weeks when exposed to ambient light such as window-filtered sunlight (sunlight passing through the glass windows of a building). As a result, curable cyanoacrylate compositions are sold in packs comprising (i) a container for the curable cyanoacrylate composition and (ii) the curable cyanoacrylate composition held within the container. For example, a certain curable cyanoacrylate product is sold in a pack comprising a plastic bottle. The bottle may be colored / opaque or may be sold within an opaque secondary pack.

[0003] Some curable cyanoacrylate compositions are sold in packs comprising a transparent container, but the curable cyanoacrylate compositions tend not to exhibit storage stability when such containers are exposed to ambient light. Accordingly, such packs are often labeled as needing to be stored away from a light source, for example, the pack may be labeled as needing to be stored in a refrigerator. If such requirements are not made, the curable cyanoacrylate composition cures prematurely within its container.

[0004] A further problem that occurs is that curable cyanoacrylate compositions tend to be very sensitive compared to other curable compositions in that the onset of curing can occur readily. Materials that cause premature curing of curable cyanoacrylate compositions are often said to be incompatible with curable cyanoacrylate compositions. Thus, materials that are compatible with other curable compositions (do not cause premature curing) are not compatible with curable cyanoacrylate compositions (cause premature curing). Thus, materials that are compatible with curable cyanoacrylate compositions are the exception rather than the norm. Because of this compatibility problem, the materials used for containers for curable cyanoacrylate compositions tend to be much more restricted than those for other curable compositions. Those skilled in the art know that the more reactive / inactive a material is, the more likely it is to be incompatible with curable cyanoacrylate compositions. SUMMARY OF THE INVENTION MEANS FOR SOLVING THE PROBLEM

[0005] (Summary) The present invention provides a plastic container for holding a curable cyanoacrylate composition that is (i) transparent to visible light, (ii) opaque to UV light, and (iii) compatible with the curable cyanoacrylate composition. The curable cyanoacrylate composition held within such a container is storage stable under ambient conditions and, moreover, the curable cyanoacrylate composition can be seen through the walls of the container.

[0006] Accordingly, the present invention provides a transparent plastic container that is (i) transparent to visible light, (ii) opaque to UV light, and (iii) compatible with a curable cyanoacrylate composition.

[0007] In fact, the containers of the present invention have performance equivalent to that of completely opaque plastic containers.

[0008] The container of the present invention can be of any suitable amount to accommodate a desired amount of curable cyanoacrylate composition, such as 5 g; 20 g; 50 g; 100 g; 500 g; 1 kg; and 2 kg.

[0009] The present invention relates to a container for a curable cyanoacrylate composition, a reservoir for holding the curable cyanoacrylate composition, the reservoir having an outlet through which the curable cyanoacrylate composition can be dispensed, the reservoir being a reservoir defined by a wall of a plastic material, a plastic material formed of a polymer material that is permeable to both visible light and UV light, and a UV blocking agent dispersed in the plastic material, the UV blocking agent comprising at least one benzotriazole, comprising, providing a container in which the wall of the container is permeable to visible light and non-permeable to UV light.

[0010] At least one benzotriazole (used as a UV blocking agent) has the formula I

Chemical formula

[0011] In the compound of formula I, R1 and / or R 2 The alkyl group of can have 1 - 8 carbon atoms, for example 1 - 5 carbon atoms, preferably 1 - 4 carbon atoms.

[0012] In the compound of formula I, R 1 and / or R 2 The alkyl - aryl group of can have 7 - 20 carbon atoms, preferably 7 - 9 carbon atoms.

[0013] In the compound of formula I, R 1 or R 2 is independently -H, -CH 3 , -C(CH 3 ) 3 , -C(CH 3 ) 2 C 2 H 5 , -C(CH 3 ) 2 CH 2 C(CH 3 ) 3 , and -C(CH 3 ) 2 C 6 H 5 can be selected from.

[0014] In the compound of formula I, preferably, at least one of R 1 and R 2 is tert - butyl (also represented as t - butyl and having the structure -C(CH 3 ) 3 ).

[0015] In the compound of formula I, R 3 is preferably selected from H or Cl.

[0016] At least one benzotriazole can include (CAS 3896-11-5) 2-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol [Chemical formula]

[0017] At least one benzotriazole can include (CAS 3864-99-1) 2,4-di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol [Chemical formula]

[0018] At least one benzotriazole can include (CAS 25973-55-1) 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol [Chemical formula]

[0019] At least one benzotriazole can include (CAS 3147-75-9) 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol [Chemical formula]

[0020] At least one benzotriazole can include (CAS 73936-91-1) 2-(2H-benzotriazol-2-yl)-6-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)phenol [Chemical formula] ​​​​It can include.

[0021] In the container of the present invention, the polymer material is preferably a polyolefin material.

[0022] Preferably, the polymer material is polyethylene, such as HDPE (high-density polyethylene).

[0023] Preferably, the polymer material is PP (polypropylene).

[0024] In the container of the present invention, the UV blocking agent can be dispersed in the plastic material in an amount of about 0.05 wt% - about 0.3 wt%.

[0025] Desirably, the antioxidant is dispersed in the plastic material. The antioxidant can prevent discoloration imparted by the processing of the material in other ways. For example, the heat stress of the component materials during manufacturing and processing imparts yellowing to the plastic material, and the antioxidant prevents such yellowing.

[0026] The antioxidant can be dispersed in the plastic material in an amount of about 0.05 wt% - about 0.3 wt%.

[0027] In the container of the present invention, it is desirable that the wall of the container is impermeable to UV light up to, for example, 370 nm, for example, up to 380 nm, preferably up to 390 nm, for example, up to 395 nm.

[0028] The present invention also provides a pack comprising the container of the present invention and a curable cyanoacrylate composition held in a reservoir of the container including.

[0029] Accordingly, the present invention provides a pack for storing a curable cyanoacrylate composition.

[0030] The container of the present invention is compatible with a wide range of curable cyanoacrylate compositions including curable methyl, ethyl, allyl, β-methoxyethyl, butyl, and octyl cyanoacrylate compositions.

[0031] Cyanoacrylate adhesive compositions are well known and are widely used as instant adhesives for a wide range of applications. See H.V. Coover, D.W. Dreifus and J.T. O'Connor, "Cyanoacrylate Adhesives" Handbook of Adhesives, 27, 463-77, I. Skeist, ed., Van Nostrand Reinhold, New York, Chapter 3 (1990). Also see G.H. Millet, "Cyanoacrylate Adhesives" Structural Adhesives: Chemistry and Technology, S.R. Hartshorn, ed., Plenum Press, New York, p. 249-307 (1986).

[0032] The cyanoacrylate component is H 2 C=C(CN)-COOR where R is selected from C 1-15 alkyl, C 2-15 alkoxyalkyl, C 3-15 cycloalkyl, C 2-15 alkenyl, C 6-15 aralkyl, C 5-15 aryl, C 2-15 and can be selected from a number of substituents such as allyl and haloalkyl groups. Preferably, the cyanoacrylate monomer is selected from at least one of methyl cyanoacrylate, ethyl-2-cyanoacrylate, propyl cyanoacrylate, butyl cyanoacrylate (e.g., n-butyl-2-cyanoacrylate), octyl cyanoacrylate, allyl cyanoacrylate, β-methoxyethyl cyanoacrylate, and combinations thereof. A particularly desirable cyanoacrylate monomer includes ethyl-2-cyanoacrylate.

[0033] The cyanoacrylate component should be included in the composition in an amount in the range of about 50% to about 99.98% by weight, preferably in the range of about 70% to about 95% by weight, based on the total composition.

[0034] The accelerator may be included in the cyanoacrylate composition of the present invention and may be, for example, any one or more selected from calixarenes and oxacalixarenes, silacrowns, crown ethers, cyclodextrins, poly(ethylene glycol) di(meth)acrylates, ethoxylated hydrogen compounds, and combinations thereof.

[0035] Among calixarenes and oxacalixarenes, many are known and reported in the patent literature. For example, see U.S. Patent Nos. 4,556,700, 4,622,414, 4,634,539, 4,695,615, 4,718,966, and 4,855,461, the disclosures of each of which are hereby expressly incorporated by reference into the present specification.

[0036] Among silacrowns, many are known and reported in the literature. For example, a typical silacrown is represented within the following structure.

Chemical formula

[0037] Crown ether hosts are known. For example, examples that can be used alone or in combination or in combination with other first accelerators include 15-crown-5, 18-crown-6, dibenzo-18-crown-6, benzo-15-crown-5-dibenzo-24-crown-8, dibenzo-30-crown-10, tribenzo-18-crown-6, asym-dibenzo-22-crown-6, dibenzo-14-crown-4, dicyclohexyl-18-crown-6, dicyclohexyl-24-crown-8, cyclohexyl-12-crown-4, 1,2-decaryl-15-crown-5, 1,2-naphtho-15-crown-5, 3,4,5-naphthyl-16-crown-5, 1,2-methyl-benzo-18-crown-6, 1,2-methylbenzo-5, 6-methylbenzo-18-crown-6, 1,2-t-butyl-18-crown-6, 1,2-vinylbenzo-15-crown-5, 1,2-vinylbenzo-18-crown-6, 1,2-t-butyl-cyclohexyl-18-crown-6, asym-dibenzo-22-crown-6 and 1,2-benzo-1,4-benzo-5-oxygene-20-crown-7. See U.S. Patent No. 4,837,260 (Sato), the disclosure of which is hereby expressly incorporated by reference into this specification.

[0038] Many cyclodextrins can be used in connection with the present invention. For example, those described and claimed in U.S. Patent No. 5,312,864 (Wenz), the disclosure of which is hereby expressly incorporated by reference into this specification, are suitable options as hydroxyl group derivatives of α, β or γ-cyclodextrin that are at least partially soluble in cyanoacrylate.

[0039] Stabilizer packages are also commonly found in cyanoacrylate compositions. The stabilizer package can include one or more free radical stabilizers and anion stabilizers, the names and amounts of each of which are well known to those skilled in the art. See, for example, U.S. Patent Nos. 5,530,037 and 6,607,632, the disclosures of each of which are hereby expressly incorporated by reference herein.

[0040] Free radical stabilizers that can be commonly used include hydroquinone, methylhydroquinone, butylated hydroxyanisole, butylated hydroxytoluene, and 4-methoxyphenol. Commonly used anion stabilizers include boron trifluoride, boron trifluoride-etherate, sulfur trioxide (and its hydrolysis products), sulfur dioxide, and methanesulfonic acid.

[0041] Other additives may be included to impart additional physical properties, such as improved impact resistance (e.g., citric acid), thickness (e.g., polymethyl methacrylate), thixotropy (e.g., fumed silica), color, reinforcing agents, humidity additives (e.g., phthalic anhydride), and heat resistance additives (e.g., pentafluorobenzonitrile, and 3,4,5,6-tetrahydrophthalic anhydride).

Mode for Carrying Out the Invention

[0042] (Detailed Description of the Invention) Initial studies were conducted to compare the performance of an opaque 20g black UV bottle (A) and a transparent 20g Sigma bottle (B) formed of the same HDPE-based resin as a transparent 20g Sigma bottle, with the performance of two new packs (C and D) to which two different masterbatches containing different ultraviolet (UV) blocking agents were added. A and B are packs of commercially available curable cyanoacrylate compositions. A is a container coextruded in two layers with an opaque outer layer to provide protection for UV-sensitive materials, and B is a transparent container that is permeable to UV light. The term "20g" means 20g of curable cyanoacrylate composition within the container.

[0043] For C, a masterbatch consisting of 2-hydroxy-4-(octyloxy)benzophenone in a polyethylene carrier was added at a 2% let-down ratio (LDR). 2-Hydroxy-4-(octyloxy)benzophenone is a broad-spectrum UV blocking agent.

[0044] For D, a masterbatch consisting of 2-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol in a polyethylene carrier was added at a 1.5% let-down ratio (LDR). 2-tert-Butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol is a red-shifted broadband UV blocking agent.

[0045] The UV transmittance of packs A - D was evaluated by UV-Vis spectroscopy, and the results are summarized in Table 1 below.

[0046]

Table 1

[0047] UV light consists of radiation with wavelengths less than 400 nm, and irradiation with shorter wavelengths has higher energy.

[0048] Since pack A is opaque, UV light is not transmitted through the packaging.

[0049] Pack B, the current transparent pack used for Loctite® cyanoacrylate products, transmits UV light in the range of 235 - 400 nm. Thus, harmful high-energy, short-wavelength UV light can reach the curable cyanoacrylate products.

[0050] Pack C blocks most of this harmful UV light but transmits UV light above 369 nm.

[0051] Pack D is more effective at blocking UV light and only transmits UV light above 395 nm.

[0052] Tests were conducted using each pack with Loctite® 401. Loctite® 401 is a low-viscosity, fast-curing, one-part liquid ethyl cyanoacrylate adhesive suitable for bonding porous materials and having a transparent, colorless to pale yellowish tinted appearance.

[0053] For this formulation of each pack type, two important properties were investigated: (i) stability when exposed to window-filtered sunlight and (ii) thermal stability after aging at 82 °C.

[0054] (i) Stability when exposed to window-filtered sunlight Table 2 summarizes the results of the stability test when exposed to window-filtered sunlight (through the building's glass window) by placing the container on the window frame inside the window. After 4 weeks in this state, the viscosity of Loctite® 401 in Pack A did not change. In contrast, the viscosities in Packs B and C increased with viscosity ratios of 1.54 and 1.48, respectively. The viscosity of Pack D increased slightly, with the lowest viscosity ratio of 1.09 after 4 weeks.

[0055]

Table 2

[0056] Packs B, C, and D were also tested using labels that cover 12.4 cm on both the front and back sides of the pack to give a more realistic representation of commercially available Loctite® cyanoacrylate products. Pack A was not tested with labels because this pack is completely opaque. 2 Packs B and C showed an increase in viscosity, with a ratio of 1.22 after 4 weeks. The viscosity was measured at 3000 s at 25 °C.

[0057] Packs B and C showed an increase in viscosity, with a ratio of 1.22 after 4 weeks. The viscosity was measured at 3000 s at 25 °C. -1It was measured using a cone and plate rheometer at the shear rate of

[0058] The viscosity ratio is the ratio of the aged viscosity to the initial viscosity (initial viscosity = viscosity before exposure).

[0059] The viscosity of Pack D does not change after 4 weeks in this state.

[0060] After exposing the window filters in each pack to sunlight for 4 weeks, no change in product performance characteristics (set time, tensile lap shear strength) was observed (Table 3). The set time (seconds "s") on the lap shear test piece was defined as the time to generate a shear strength of 0.1 N / mm 2 and measured at 22 °C and 50% relative humidity. The tensile lap shear strength (N / mm 2 ) was measured in accordance with ISO4587:2003.

[0061] The lap shear used MS = mild steel Al = aluminum PC = polycarbonate PVC = polyvinyl chloride GBMS = grit blasted mild steel [Table 3]

[0062] In the data presented in this specification, h = time, RTC = room temperature condition. For example, "24 h RTC" = 24 hours under room temperature condition.

[0063] (ii) Thermal stability after aging at 82 °C The compatibility of each pack type with Loctite® 401 was also investigated by thermal aging at 82 °C (see Table 4). After 3 days at 82 °C, all of Pack A, B, and D showed good compatibility with the formulation, and all had viscosity ratios of less than 3. However, a viscosity ratio of 3.9 was determined for the formulation in Pack C. After an additional 3 days at 82 °C, the formulation in Pack C had gelled solids.

[0064]

Table 4

[0065] These results indicate that it is possible to incorporate UV blocking agents into the resins used in transparent cyanoacrylate packages. These UV blocking agents block the transmission of high energy short wavelength ultraviolet light, as expected.

[0066] However, only the benzotriazole type UV blocking agents are effective in protecting Loctite® 401 inside the pack and preventing an increase in viscosity when exposed to window filter sunlight.

[0067] Only the benzotriazole type UV blocking agents are compatible with the cyanoacrylate formulation. This is surprising. Given the generally reactive nature of benzotriazole, it is surprising that it does not cause premature curing of the curable cyanoacrylate composition.

[0068] Compared to an opaque black UV bottle, Pack D is effective in protecting the cyanoacrylate from UV light and is transparent.

[0069] Further studies were conducted on Loctite® 401 in Pack E with a masterbatch consisting of 2-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol in Pack B, a transparent 20 g sigma bottle, and a polyethylene carrier added at a 1.0% loss ratio (LDR) relative to the base HDPE resin (see Table 5).

[0070]

Table 5

[0071] The samples were exposed to continuous light in a Q-SUN Xe-1 Xenon Arc test chamber for a defined period of time. The Q-SUN Xe-1 provides an excellent simulation of both direct and indirect sunlight according to ASTM G-155. The spectrum of light emitted by the Q-SUN Xe-1 is approximately equal to that of midday, midsummer sunlight in the Northern Hemisphere. When the Q-SUN Xe-1 is equipped with a Window-Q filter, the light emitted within the test chamber is approximately equal to direct sunlight passing through a single-pane glass of a single intensity. Table 6 below shows the exposure conditions in the Q-SUN Xe-1 used in this study.

[0072]

Table 6

[0073] The appearance of Loctite® 401 in Packs B and E was monitored after exposure to Q-SUN for a defined time period. After each time point, the appearance was recorded and the results are summarized in Table 7 below. Loctite® 401 in Pack B was found to be a solid that had gelled after 18 hours of exposure to Q-SUN. In contrast, Loctite® 401 in Pack E remained a clear, colorless liquid even after 65 hours of exposure to Q-SUN.

[0074]

Table 7

[0075] The viscosity, set time, and double shear strength of this Loctite® 401 were tested after 65 hours of Q-SUN exposure in Pack E. The results are summarized in Table 8 below. The viscosity did not increase significantly, and all of the set time and tensile double shear strength met the required product specifications.

[0076]

Table 8

[0077] After showing the UV protection characteristics of Pack E compared to Pack B, a compatibility test was carried out within the range of commercially available Loctite® products to confirm the compatibility of Pack E as a commercial pack for these products.

[0078] Loctite® 403 is a grade of β-methoxyethyl cyanoacrylate-based adhesive. It is an intermediate viscosity, fast-curing, low odor / low bloom one-part liquid β-methoxyethyl cyanoacrylate adhesive with a transparent and colorless to pale yellow appearance.

[0079] Loctite® 406 is a grade of ethyl cyanoacrylate-based adhesive. It is a low viscosity, wicked, fast-curing, one-part liquid ethyl cyanoacrylate adhesive with a transparent and colorless to pale yellow colored appearance.

[0080] Loctite® 424 is a grade of ethyl cyanoacrylate-based adhesive. It is a low viscosity, general purpose, fast-curing, one-part liquid ethyl cyanoacrylate adhesive with a transparent and colorless to pale yellow colored appearance.

[0081] Loctite® 435 is a grade of rubber-reinforced ethyl cyanoacrylate-based adhesive. It is a low viscosity, fast-curing, rubber-reinforced one-part liquid ethyl cyanoacrylate adhesive with a colorless to pale yellow colored and slightly turbid appearance.

[0082] Loctite® 460 is a grade of β-methoxyethyl cyanoacrylate-based adhesive. It is a low viscosity, fast-curing, low odor / low bloom one-part liquid β-methoxyethyl cyanoacrylate adhesive with a transparent and colorless to pale yellow colored appearance.

[0083] Loctite® 480 is a grade of rubber-reinforced ethyl cyanoacrylate adhesive. It is a low-viscosity, fast-curing, rubber-reinforced one-part liquid ethyl cyanoacrylate adhesive with a black appearance.

[0084] Loctite® 495 is a grade of ethyl cyanoacrylate adhesive. It is a low-viscosity, general-purpose, fast-curing, one-part liquid ethyl cyanoacrylate adhesive with a transparent, colorless to pale yellow tinted appearance.

[0085] Loctite® 4850 is a grade of ethyl and butyl cyanoacrylate adhesive. It is a medium-viscosity, fast-curing, flexible one-part liquid ethyl and butyl cyanoacrylate adhesive with a transparent, colorless to pale yellow tinted appearance.

[0086] Loctite® 4062 is a grade of ethyl cyanoacrylate adhesive. It is a very low-viscosity, fast-curing, one-part liquid ethyl cyanoacrylate adhesive with a transparent, colorless to pale yellow tinted appearance.

[0087] The thermal aging test was carried out on these Loctite® products in packs B and E at 82 °C, and the results were summarized in Table 9 below. The stability of the Loctite® product grades tested in pack E was found to be comparable to that of pack B after 3 days at 82 °C.

[0088]

Table 9

[0089] As used herein with reference to the present invention, the terms "comprises" and "comprising" and the terms "having" and "including" are used to specify the presence of the stated features, integers, steps or components, but do not preclude the presence or addition of one or more other features, integers, steps, components or groups.

[0090] For clarity, it is understood that certain features of the invention described in the context of separate embodiments may be provided in combination in a single embodiment. Conversely, for brevity, various features of the invention described in the context of a single embodiment may be provided separately or in any suitable sub-combination.

Claims

1. 1. A container for a curable cyanoacrylate composition comprising: A reservoir for holding a curable cyanoacrylate composition, the reservoir having an outlet through which the curable cyanoacrylate composition can be dispensed, the reservoir being defined by a wall of a plastic material; a plastic material formed from a polymeric material that is transparent to both visible and UV light; and A UV blocking agent dispersed in a plastic material, the UV blocking agent comprising at least one benzotriazole. Including, A container wherein the walls of the container are transparent to visible light and non-transparent to UV light.

2. At least one benzotriazole is represented by formula I 【Chemistry 1】 During the ceremony, R １ is selected from H, an alkyl group having 1-20 carbon atoms, or an alkyl-aryl group having 7-39 carbon atoms; R ２ is R １ and may be the same or different and are selected from H, an alkyl group having 1-20 carbon atoms, or an alkyl-aryl group having 7-39 carbon atoms; R ３ is H, Cl or Br; 2. The container of claim 1, comprising one or more benzotriazoles selected from the compounds represented by:

3. In the compounds of formula I, R １ and / or R ２ The container of claim 2, wherein the alkyl group has 1-8 carbon atoms, for example 1-5 carbon atoms, preferably 1-4 carbon atoms.

4. In the compounds of formula I, R １ and / or R ２ Container according to claim 2 or claim 3, wherein the alkyl-aryl group has from 7 to 20 carbon atoms, preferably from 7 to 9 carbon atoms.

5. In the compounds of formula I, R １ Or R ２ is, independently, -H, -CH ３ 、 -C(CH ３ ) ３ 、 -C(CH ３ ) ２ C ２ H ５ 、 -C(CH ３ ) ２ CH ２ C (CH ３ ) ３ , and -C(CH ３ ) ２ C ６ H ５ The container according to any one of claims 2 to 4, selected from the group consisting of:

6. In the compounds of formula I, R １ and R ２ The container according to any one of claims 2 to 4, wherein at least one of is tert-butyl.

7. At least one benzotriazole is CAS 3896-11-5, 2-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol 【Chemistry 1】 The container according to any one of claims 1 to 6, comprising:

8. At least one benzotriazole is CAS 3864-99-1, 2,4-di-tert-butyl-6-(5-chloro-2H-benzotriazol-2-yl)phenol 【Chemistry 1】 The container according to any one of claims 1 to 6, comprising:

9. At least one benzotriazole is CAS 25973-55-1, 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol 【Chemistry 1】 The container according to any one of claims 1 to 6, comprising:

10. At least one benzotriazole is CAS 3147-75-9, 2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol 【Chemistry 1】 The container according to any one of claims 1 to 6, comprising:

11. At least one benzotriazole is CAS 73936-91-1, 2-(2H-benzotriazol-2-yl)-6-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)phenol 【Chemistry 1】 The container according to any one of claims 1 to 6, comprising:

12. A container according to any one of the preceding claims, wherein the polymeric material is a polyolefin material.

13. A container according to any one of the preceding claims, wherein the polymeric material is polyethylene.

14. 14. The container of claim 13, wherein the polymeric material is HDPE (high density polyethylene).

15. The container according to any one of claims 1 to 12, wherein the polymer material is PP (polypropylene).

16. The container of any one of claims 1 to 15, wherein the UV blocking agent is dispersed in the plastic material in an amount of about 0.05% to about 0.3% by weight.

17. A container according to any one of claims 1 to 16, further comprising an antioxidant dispersed in the plastic material.

18. 18. The container of claim 17, wherein the antioxidant is dispersed in the plastic material in an amount of about 0.05% to about 0.3% by weight.

19. Container according to any one of claims 1 to 18, wherein the wall of the container is non-transparent to UV light up to 360 nm.

20. 20. The container according to any one of claims 1 to 19, wherein the wall of the container is non-transparent to UV light up to 370 nm.

21. Container according to any one of claims 1 to 20, wherein the wall of the container is non-transparent to UV light up to 380 nm.

22. A container according to any one of claims 1 to 21, wherein the walls of the container are non-transparent to UV light up to 390 nm.

23. A container according to any one of claims 1 to 22, wherein the walls of the container are non-transparent to UV light up to 395 nm.

24. (i) a container according to any one of claims 1 to 23, and (ii) a curable cyanoacrylate composition held within a reservoir of the container. Pack including:

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