JP5685669B1 - Adhesive composition for lining - Google Patents

Abstract

(A) polymer latex, (B) acetylenic diols, (C) hindered phenolic antioxidant, (D) sulfur antioxidant, (E) metal deactivator, and (A) 100 0.1 to 3 parts by weight (in terms of solid content) of (B) relative to parts by weight (in terms of solid content), and the total of (C) to (E) is 0.1 to 1.5 parts by weight (in terms of solid content) It is an object of the present invention to provide an adhesive composition for backing. [Selection figure] None

Description

  The present invention relates to a backing adhesive composition. Specifically, when it is used as a lining material when manufacturing rug products such as artificial turf with a backing that prevents the piles embedded in the base fabric from falling off, it is particularly productive, blister resistant, The present invention relates to an adhesive composition having excellent aging properties and pulling strength.

Many rugs including artificial turf use a polymer latex adhesive composition as a backing material to fix the pile. This adhesive composition includes natural latex and synthetic rubber latex such as diene copolymer latex and acrylic copolymer latex, polymer latex such as calcium carbonate, inorganic filler such as calcium carbonate, and polyolefin resin powder. It is well known that an aqueous adhesive composition containing an organic filler is used.

  In recent years, various methods have been taken in the lining process of rugs for the purpose of improving and rationalizing productivity. One method is to shorten the time in the drying process. As a means for this, by increasing the solid content of the composition compared to the conventional adhesive composition, the amount of water evaporated in the drying process can be reduced while maintaining the coating amount as the dry weight, and the same unit time. Even with the thermal energy processing, productivity can be improved by increasing the processing speed. In addition, when the processing speed is the same, the heat energy required for drying is reduced and rationalization is achieved by energy saving.

However, as a means for increasing the solid content of the adhesive composition, a method of increasing the amount of an inorganic filler such as calcium carbonate is generally performed, but as a result, the relative proportion of the polymer latex in the formulation This is not preferable because there is a problem that the yarn pulling strength, particularly the water-proof yarn pulling strength required when used outdoors, is lowered. Then, the method of making solid content of an adhesive composition high by the method of reducing the water | moisture content brought in at the time of a mixing | blending is taken. At that time, in order to maintain the same amount of the adhesive composition applied to the dry weight as before, the application amount of the adhesive composition before drying applied to the base fabric is reduced, and the back surface of the rug. Insufficient coating volume to cover the cover cannot be secured, and the base fabric is generally composed of a polyolefin-based woven fabric. There is a problem in that the appearance is poor due to partial occurrence, the product value is lowered, the pile is not sufficiently retained by the adhesive composition, and the yarn removal strength is lowered.

Therefore, in order to compensate for the shortage of the coating volume, a means to lower the surface tension of the adhesive composition to improve the wettability is generally taken, but an anionic interface such as sodium dodecylbenzenesulfonate is used to reduce the surface tension. When an activator, a nonionic surfactant, or the like is used, a large amount of addition is necessary to obtain sufficient wettability, and as a result, the unwinding strength, particularly the water-resistant unwinding strength is lowered, which is not preferable. Furthermore, it is difficult to obtain a product having stable physical properties, such as the specific gravity of the adhesive composition being processed changes due to unexpected foaming during processing, and the stability of the coating weight is insufficient. Absent.

In addition, a method of mechanically foaming the adhesive composition to increase the coating volume is also conceivable. However, the surfactant added for foaming causes a decrease in the yarn removal strength, particularly a decrease in the resistance to water removal. This is not a preferred method. Furthermore, the same applies to the improvement of wettability, but the addition of a surfactant has the advantage of improving the stability of the adhesive composition, but on the other hand, starch used as a blistering resistance agent described later, etc. This is not a preferable method because it may inhibit the action of the heat-sensitive gelling agent.

On the other hand, in order to improve productivity, the method of shortening the time taken for a drying process by raising drying temperature is also taken. In that case, the surface of the applied adhesive composition dries faster and becomes a film than before, so blistering due to rapid evaporation of moisture inside the adhesive composition, so-called blistering, resulting in poor appearance and commercial value There is a problem that decreases. Furthermore, the high solid differentiation of the adhesive composition for the purpose of improving the productivity described above promotes the formation of a film on the surface, leading to a situation where the generation of blisters is worsened. In addition, increasing the drying temperature also increases the heat history in the drying process for the adhesive composition containing the polymer latex, resulting in a decrease in aging resistance.

While starch as a heat-sensitive gelling agent conventionally used for improving blister resistance (for example, Patent Document 1 and Patent Document 2) has an advantage that blister resistance can be obtained relatively easily, In order to improve the blister resistance under severe drying temperature conditions, a means of increasing the amount must be taken. As a result, the ratio of the polymer latex as the adhesive in the adhesive composition is relatively decreased, the dropout strength is decreased, the aging resistance is decreased, and a large amount of starch and the like is added to the adhesive composition. It becomes easy to rot during storage. Moreover, there is a problem that the gloss of the appearance of the product after drying is reduced due to an increase in the amount of starch and the like, and the commercial value is lowered. Therefore, an easy increase is not desirable in terms of physical properties and commercial value.

Furthermore, as a heat-sensitive gelling agent for improving blister resistance, polyvinyl alcohol or the like is blended (for example, Patent Document 3), polyorganosiloxane is blended (for example, Patent Document 4, Patent Document 5), Zirconium-based compounds and the like are blended (for example, Patent Document 6 and Patent Document 7), but there are limitations on the composition of the polymer latex that can be used in the adhesive composition, and the stability during storage of the adhesive composition. It is not always satisfactory, including blister resistance, such as a problem in properties.

The decrease in aging resistance due to heat history can be improved to some extent by increasing the amount of anti-aging agent, but easy increase of anti-aging agent is not economical. Examples of blending an anti-aging agent and a sequestering agent to prevent aging (for example, Patent Document 8), examples of blending a specific phenol-based anti-aging agent and a sulfur-based anti-aging agent (for example, Patent Document 9), etc. However, it is not necessarily sufficient performance.

  Various methods for shortening the time of the drying process for the purpose of improving productivity have the above-mentioned problems in conventional formulations, and a method for improving these problems is demanded.

Japanese Patent Publication No.57-30429

JP 54-126242 A

Japanese Unexamined Patent Publication No. 60-149677

Japanese Patent Laid-Open No. 61-271365

JP 52-95749 A

Japanese Patent Laid-Open No. 03-23479

JP 2011-117112 A

Japanese Patent Laid-Open No. 62-030172

JP 05-148464 A

The object of the present invention is to solve the problems that occur when aiming at the improvement of productivity described above, which has been difficult to solve with the prior art. An object of the present invention is to provide an adhesive composition used as a backing material having excellent blister resistance and aging resistance.

The present invention contains (A) a polymer latex, (B) acetylenic diols, (C) a hindered phenol antioxidant, (D) a sulfur antioxidant, (E) a metal deactivator and starch. , 0.1 to 3 parts by weight (in terms of solid content) of (B) with respect to 100 parts by weight (in terms of solid content) of (A), and the total of (C) to (E) is 0.1 to 1.5 A backing adhesive composition characterized by being in parts by weight (in terms of solid content) is used.

  The adhesive composition of the present invention makes it possible to suppress defects caused by increasing the solid content of the formulation to improve productivity, specifically, curling due to a decrease in the coating volume, and further blister resistance. Improved. As a result, it is not necessary to increase the amount of starch or the like as an anti-blister agent, and no drop in strength is observed. In addition, aging resistance is improved, processing at a higher temperature and higher speed is possible, and this contributes to an improvement in productivity. In addition, a rug having sufficient aging resistance can be obtained even under severe conditions such as outdoor use.

The present invention is described in detail below.
The polymer latex (A) in the present invention includes natural rubber latex, butadiene / styrene copolymer latex, butadiene / acrylonitrile copolymer latex, butadiene / methyl methacrylate copolymer latex, butadiene / styrene / vinyl. Examples thereof include diene copolymer latex such as pyridine copolymer latex, polychloroprene latex, polyisoprene latex, acrylic copolymer latex, and ethylene vinyl acetate copolymer latex. One or more of these can be used. Of these, diene copolymer latex is preferable, and carboxy-modified diene copolymer latex is more preferable.

As the monomer constituting the diene copolymer latex, a conjugated diene monomer and other monomers copolymerizable with the conjugated diene monomer can be used. Other monomers that can be copolymerized include aromatic vinyl monomers, ethylenically unsaturated carboxylic acid monomers, ethylenically unsaturated carboxylic acid alkyl ester monomers, and ethylenically unsaturated monomers containing hydroxyl groups. Examples include known monomers such as saturated monomers and vinyl cyanide monomers. These monomers are not particularly limited in type and amount used unless they impede performance as an adhesive composition to be obtained, and 100 parts by weight of monomers constituting the diene copolymer latex and In this case, the preferable range of the conjugated diene monomer is 30 to 60 parts by weight, and more preferably 35 to 50 parts by weight.
If the amount of the conjugated diene monomer is less than 30 parts by weight, the texture tends to be hard, the workability of the rug tends to be impaired, and if it exceeds 60 parts by weight, the yarn removal strength tends to decrease.

  In the case of a carboxy-modified diene copolymer latex, the aforementioned ethylenically unsaturated carboxylic acid monomer is used. Examples of the ethylenically unsaturated carboxylic acid monomer include acrylic acid, methacrylic acid, maleic acid, fumaric acid, and itaconic acid, and one or more of these can be used. There are no particular restrictions on the type and amount of use of these monomers as long as they do not impair the performance of the resulting adhesive composition, but the monomer 100 constituting the carboxy-modified diene copolymer latex The preferred range of the ethylenically unsaturated carboxylic acid monomer is 0.3 to 5 parts by weight, more preferably 0.5 to 2 parts by weight. When the amount of the ethylenically unsaturated carboxylic acid monomer is less than 0.3 parts by weight, the compounding property of the adhesive composition and the take-off strength of the processed product tend to decrease, and when the amount exceeds 5 parts by weight, the diene copolymer The latex has a high viscosity, which causes problems in handling and tends to decrease water resistance, which is not preferable.

The polymer latex (A) excluding natural rubber used in the adhesive composition of the present invention is obtained by emulsion polymerization of each monomer. The addition method of various components in emulsion polymerization is not particularly limited, and any of a batch addition method, a divided addition method, a continuous addition method, and a power feed method can be employed. As the polymerization method, batch polymerization, semi-batch polymerization, seed polymerization and the like can be used.
Furthermore, in the case of emulsion polymerization, conventional emulsifiers, chain transfer agents, polymerization initiators, hydrocarbon solvents, electrolytes, polymerization accelerators, and the like can be used.

  (A) As an emulsifier used in emulsion polymerization of polymer latex, higher alcohol sulfate ester, alkylbenzene sulfonate, alkyl diphenyl ether disulfonate, aliphatic sulfonate, aliphatic carboxylate, aliphatic One kind of anionic surfactant such as sulfate ester salt, nonionic surfactant such as polyoxyethylene alkyl ether, polyoxyethylene alkylene alkyl ether, polyoxyethylene derivative, and betaine type amphoteric surfactant Two or more types can be used in combination, and there is no limitation on the type and amount as long as the performance of the adhesive composition is not impaired.

  (A) Examples of chain transfer agents used in polymer latex polymerization include alkyl mercaptans such as n-hexyl mercaptan, n-octyl mercaptan, t-octyl mercaptan, n-dodecyl mercaptan, t-dodecyl mercaptan, and n-stearyl mercaptan. , Xanthogen compounds such as dimethylxanthogen disulfide, diisopropylxanthogen disulfide, terpinolene, thiuram compounds such as tetramethylthiuram disulfide, tetraethylthiuram disulfide, tetramethylthiuram monosulfide, α-methylstyrene dimer, 2,6-di- phenolic compounds such as t-butyl-4-methylphenol and styrenated phenol, allyl compounds such as allyl alcohol, dichloromethane, dibromomethane, Halogenated hydrocarbon compounds such as carbon bromide, vinyl ethers such as α-benzyloxystyrene, α-benzyloxyacrylonitrile, α-benzyloxyacrylamide, triphenylethane, pentaphenylethane, acrolein, methacrolein, thioglycolic acid, thioapple An acid, 2-ethylhexyl thioglycolate, etc. are mentioned, These can be used 1 type or 2 types or more.

  (A) As a polymerization initiator used at the time of polymer latex polymerization, water-soluble polymerization initiators such as potassium persulfate, sodium persulfate and ammonium persulfate, redox polymerization initiators, and oil-soluble polymerization initiation such as benzoyl peroxide An agent can be used as appropriate. In particular, the use of a water-soluble polymerization initiator is preferred.

  In the polymerization of the polymer latex (A), saturated hydrocarbons such as pentane, hexane, heptane, octane, cyclohexane, cycloheptane, pentene, hexene, heptene, cyclopentene, cyclohexene, cycloheptene, 4-methylcyclohexene, 1- Hydrocarbon solvents such as unsaturated hydrocarbons such as methylcyclohexene and aromatic hydrocarbons such as benzene, toluene and xylene may be used.

Examples of (B) acetylenic diols used in the adhesive composition of the present invention include acetylene glycol and those obtained by adding ethylene oxide to acetylene glycol, and further, dissolved alcohols and dissolved glycols. Such as things. Also. These (B) acetylenic diols can be used alone or in combination of two or more, and the use ratio is not particularly limited. Among them, acetylene glycol is preferable, and an ethylene glycol solution is more preferable.
These (B) acetylenic diols are available as commercial products such as the Surfynol series manufactured by Air Products.

  The adhesive composition of the present invention may contain 0.1 to 3 parts by weight (in terms of solid content) of (B) acetylenic diols with respect to 100 parts by weight (in terms of solid content) of (A) polymer latex. is necessary. If the amount is less than 0.1 parts by weight (in terms of solid content), it may cause defective appearance such as scumming at the time of application of the adhesive composition, and defective pulling strength. Furthermore, the blister resistance is reduced. Even if it exceeds 3 parts by weight (in terms of solid content), the improvement in performance commensurate with the amount added is small.

  In the adhesive composition of the present invention, the blister resistance is improved by the use of the above-mentioned (B) acetylenic diols, so that it is possible to reduce the amount of starches commonly used as a blister resistant agent. Further, by using (C) a hindered phenol antioxidant, (D) a sulfur antioxidant, and (E) a metal deactivator described later, it is possible to improve the quality further.

  In the present invention, (C) a hindered phenolic antioxidant and (D) a sulfurous antioxidant, which cannot be achieved by the prior art, are used in a specific ratio, and (C) a hindered phenolic system. By using (E) a metal deactivator at a specific ratio with respect to the total of the antioxidant and (D) the sulfur-based antioxidant, the quality can be further improved, contributing to the improvement of productivity. I found out.

  The (C) hindered phenol antioxidant used in the adhesive composition of the present invention is a substance that prevents aging by capturing radicals generated in the polymer latex (A), and is used as a primary antioxidant. Are known. Examples of (C) hindered phenolic antioxidants include Sumitomo Chemical Co., Ltd., Sumilizer GP, Sumilizer GA-80, and Sumilizer MDP-S. Also available are BASF Corporation Irganox 1010, Irganox 245 and the like. Furthermore, Eriochem Co., Ltd., Wingsty L, etc. are mentioned. These 1 type (s) or 2 or more types can be used together. Of these, the use of the Sumilizer GA-80 and Wingsty L is preferred.

  The (D) sulfur-based antioxidant used in the adhesive composition of the present invention is (A) a substance that prevents aging by inhibiting peroxide generated in the polymer latex, and prevents secondary oxidation. Known as an agent. Examples of (D) sulfur-based antioxidants include Sumitizer TP-D and Sumilizer TPM manufactured by Sumitomo Chemical Co., Ltd. Further, DLTP Yoshitomi B manufactured by API Corporation can be used. These 1 type (s) or 2 or more types can be used together. Of these, the use of Sumilizer TP-D and DLTP Yoshitomi B is preferable.

  Examples of the metal deactivator (E) used in the adhesive composition of the present invention include aminocarboxylic acid chelating agents. Specific examples include ethylenediaminetetraacetic acid and diethylene-triaminepentaacetic acid. Further, there are benzamide-based and hydrazide-based compounds such as Adeka Stub CDA-1, Adeka Stub CDA-6, and Adeka Stub CDA-10 manufactured by Adeka. These can be used alone, but two or more types can also be used. Among these, use of ethylenediaminetetraacetic acid and ADK STAB CDA-6 is preferable.

  The (C) hindered phenol-based antioxidant, (D) sulfur-based antioxidant and (E) metal deactivator used in the adhesive composition of the present invention are (A) 100 parts by weight of polymer latex (solid It is necessary that the total amount of (C) + (D) + (E) is 0.1 to 1.5 parts by weight (in terms of solid content) with respect to (in terms of minutes). Furthermore, it is more preferable that it is 0.15-1 weight part (in solid content conversion). If the amount is less than 0.1 parts by weight (in terms of solid content), sufficient aging resistance cannot be obtained, and if the amount exceeds 1.5 parts by weight (in terms of solid content), further improvement in aging resistance cannot be expected.

The adhesive composition of the present invention is characterized in that the antioxidants (C) and (D) described above and (E) a metal deactivator are used in a specific ratio. The mixing ratio of (C) hindered phenol antioxidant and (D) sulfur antioxidant is (C) / (D) = 50/50 when the sum of (C) and (D) is 100. It is preferable that it is -95/5. Furthermore, 60 / 40-90 / 10 is preferable, Most preferably, it is 70 / 30-80 / 20. The mixing ratio of (C) hindered phenol antioxidant and (D) sulfur antioxidant and (E) metal deactivator is the total amount of (C) + (D) + (E). When 100 is 100, the ratio is preferably ((C) + (D)) / (E) = 70/30 to 99/1. Furthermore, 80 / 20-98 / 2 are preferable, Most preferably, it is 70 / 30-95 / 5. When deviating from these ratios, the aging resistance tends to decrease.

The above-mentioned antioxidants (C) and (D) are preferably added to the (A) polymer latex as fine particles having an average particle diameter of 20 μm or less and as an aqueous dispersion. If the average particle diameter exceeds 20 μm, the performance as an antioxidant tends to be insufficient, which is not preferable. In the process of making fine particles into an aqueous dispersion, (C) a hindered phenolic antioxidant and (D) a sulfurous antioxidant are mixed singly or in a predetermined ratio, and water and a dispersing agent are added and pulverized and dispersed with a ball mill. Or, similarly, a method of mixing with glass beads, stirring at high speed, and pulverizing and dispersing.
When (E) a metal deactivator that is insoluble in water or has low solubility in water is used, (E) the metal deactivator is mixed with the antioxidants (C) and (D) in a predetermined ratio. It is also possible to make an aqueous dispersion. When the (E) metal deactivator having high water solubility or solubility in water is used, it can be added to the formulation as it is or dissolved in water.

  In the adhesive composition of the present invention, as fillers, inorganic fillers such as calcium carbonate, clay, aluminum hydroxide, magnesium hydroxide, barium sulfate, zeolite, zinc oxide, and satin white, or polyolefin powders, etc. These organic fillers can be used alone or in combination of two or more. The amount of the filler used is preferably 350 parts by weight (in terms of solid content) or less with respect to 100 parts by weight (in terms of solid content) of the polymer latex (A). If it exceeds 350 parts by weight (in terms of solid content), there is a tendency for the yarn removal strength and water resistance to decrease.

  In the adhesive composition of the present invention, as other additives, dispersants such as low molecular weight sodium polyacrylate, sodium alkylnaphthalene sulfonate, sodium tripolyphosphate, ultraviolet absorbers, chlorine-based, bromine-based, phosphorus-based, etc. Flame retardants, preservatives such as isothiazoline, antibacterial agents, deodorants, pH adjusters such as sodium hydroxide, potassium hydroxide, ammonia, thickeners such as sodium polyacrylate, carboxymethylcellulose, hydroxyethylcellulose, sulfosucci It is also possible to blend known additives such as acid-based penetrants, silicon-based and mineral oil-based antifoaming agents, color pigments, and fragrances. There are no particular restrictions on the type and amount used, and appropriate amounts can be used as long as the performance as an adhesive composition is not impaired.

  The method of applying the adhesive composition of the present invention to a rug or the like is not particularly limited. For example, the adhesive composition is supplied to a coating bath, lifted by a coating roll, applied to the back surface, and excessive with a doctor blade or the like. Examples include a roll coating method in which the adhesive composition is scraped off and processed, and a direct coating method in which the adhesive composition is directly applied with the back side up and the excess adhesive composition is scraped off with a doctor roll or the like. .

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated further more concretely, this invention is not limited to these Examples, unless the summary is exceeded. In the examples, parts and percentages indicating percentages are based on weight unless otherwise specified. In addition, various physical properties in the examples were evaluated by the following methods. The evaluation results are shown in Table 1.

Evaluation of blister resistance The adhesive compositions obtained in the examples and comparative examples were coated with a split yarn fabric made of polypropylene for the primary base fabric and the weight before drying on the back of the artificial lawn machine made of polypropylene for the pile. The one uniformly coated with 800 g / m ² was dried with hot air in an oven at 150 ° C. for 15 minutes or dried with hot air in an oven at 180 ° C. for 10 minutes, and the generated blister was visually evaluated.
(No blistering) ◎>○>△> × (Blistering on the entire surface)

Evaluation of aging resistance An adhesive composition not using a color pigment was prepared from the formulation of Examples and Comparative Examples, cast on a glass plate with a thickness of 1 mm, and air-dried overnight to create a film. The film was heated at 120 ° C. for 20 minutes to obtain a sample for an aging resistance test. The sample was heated in a gear oven at 150 ° C. for 6 hours, and the change in yellowing by visual observation and the degree of curing of the film were evaluated by tactile sensation to comprehensively evaluate the aging resistance.
(Good aging resistance) ◎>○>△> × (Poor aging resistance)

The adhesive composition obtained in the evaluation examples and comparative examples of the yarn removal strength was uniformly applied to the back of the artificial lawn machine for blister resistance evaluation at 800 g / m ^{2 by} weight before drying at 120 ° C. An artificial turf product was prepared by drying with hot air in an oven for 20 minutes. The extraction strength of the obtained artificial turf product was measured by a method based on JIS L 1021-8: 2007 (Fiber floor covering test method-Part 8: Pile yarn pull-out strength test method).

Water resistance evaluation (waterproofing strength)
The artificial turf product obtained for evaluation of the removal strength was taken out after being immersed in water at 25 ° C. for 24 hours, and after removing moisture with a waste cloth, the measurement was performed in the same manner as the evaluation of the extraction strength.
Preparation of adhesive composition

In the formulation shown in Table 1, (A) polymer latex, (B) acetylenic diols, (C) hindered phenol antioxidant, (D) sulfur antioxidant, (E) metal deactivator. , Dispersant, antifoaming agent, starch, colored black pigment, heavy calcium carbonate, antifoaming agent, thickener and water, solid content 60 ± 1%, viscosity 10000 ± 1000 mPa · s, The adhesive composition as an Example and a comparative example was created, and it used for each evaluation. The adhesive composition for the aging resistance test was similarly prepared without using a colored black pigment and used for evaluation.

  As shown in Table 1, all of the adhesive compositions shown in Examples 1 to 4 which are the invention of the present application were excellent in blister resistance, aging resistance, pulling strength, and water resistance.

  As shown in Table 1, since all of Comparative Examples 1 to 5 were different from the scope of the present invention, the blister resistance, aging resistance, pulling strength, and water resistance were inferior.

As described above, by using the backing adhesive composition of the present invention, it becomes possible to solve various problems at the time of improving productivity by being excellent in blister resistance and aging resistance, as well as yarn removal strength and water resistance. Products with excellent properties can be provided stably. Further, since it has sufficient aging resistance even under severe conditions such as outdoor use, it is particularly suitable as a backing material for artificial turf products.

Claims (6)

(A) polymer latex, (B) acetylenic diols, (C) hindered phenol antioxidant, (D) sulfur antioxidant, (E) metal deactivator and starch , (A) 0.1 to 3 parts by weight (in terms of solid content) and (C) to (E) in total of 0.1 to 1.5 parts by weight (in terms of solid content) The adhesive composition for lining is characterized in that it is a minute conversion).
  (B) The backing adhesive composition according to claim 1, wherein the acetylenic diols are acetylene glycols. The mixing ratio (C) / (D) is 50/50 to 95/5 based on the total of (C) hindered phenolic antioxidant and (D) sulfur antioxidant. 3. The backing adhesive composition according to 1 or 2. The ratio ((C) + (D)) / (E) of the sum of (C) and (D) and (E) metal deactivator is a ratio of 70/30 to 99/1. The adhesive composition for backing according to any one of claims 1 to 3.   (A) The polymer latex is a diene copolymer latex, and the backing adhesive composition according to any one of claims 1 to 4. The adhesive composition according to claim 1, wherein the adhesive composition is used for lining artificial turf.