JPH0812402A - Ornamental finishing material giving natural rock-like foamed product - Google Patents

Abstract

PURPOSE:To obtain a material which can easily give three-dimensional stereopatterns and natural rock-like shapes a few cm thick of light weight to the surfaces of buildings and civil engineering structures for giving a fine view to these surfaces. CONSTITUTION:A foaming urethane resin composition comprising (A) the main material containing a polyether polyol, water and a catalyst, (B) a curing agent of an HMDI polyisocyanate, (C) a coloring material and (D) a filler is used in perforated mold frames. As a foaming type urethane resin composition is used, the material can be made thick with light weight and the admixing of colorants gives designingly beautiful three-dimensional patterns or shapes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material for imparting a three-dimensional pattern having a thickness of several centimeters or a material for forming a natural rock-shaped lightweight body on the surface of a building or civil engineering structure such as concrete or iron. In particular, the foamable urethane resin composition is used for forming the thickness, and the foam layer itself has a beautiful color.

[0002]

2. Description of the Related Art Conventionally, various kinds of natural stones and artificial materials imitating natural stones have been used. Among them, a composition having a marble tone or a granite tone, which is mainly composed of a synthetic resin and which is mixed with a colored aggregate or various fillers, can be given a free shape by molding or coating, and recently, its use The amount is increasing. However, although these materials are certainly lighter in weight than natural stones and natural stones, the weight is sufficient for a lightweight material because it is a synthetic resin mixed with various colored aggregates and fillers. It's a big one. For example, Japanese Patent Application Laid-Open No. 55-113529 discloses a method for producing a molded article having a marble pattern, which includes "1. unsaturated polyester resin, reinforcing fiber, filler, thickener, curing agent". In the process of manufacturing an SMC composed of an agent, a release agent, etc., a thickened flaky material of an unsaturated polyester resin containing a colorant having a color tone different from that of the SMC as a pattern forming material is partially scattered on the surface of the SMC. The method for producing a molded product having a marble appearance is characterized in that SMC is produced by subjecting the resulting SMC to hot-pressing. " As a rock and a method for producing the rock, the claims thereof include "(1) 20 to 60% by weight of a base material resin mainly composed of an acrylate ester system (the same applies to the total amount of imitation granite hereinafter). ,average Inorganic filler 30 in the radial 2~70μm
79% by weight and a mixture of 1 to 40% by weight of white, black or colored chromatic inorganic particles having a particle size of 0.1 mm or more, and a silica-based filler as the inorganic filler, based on the total amount of the artificial granite. Imitation granite characterized by containing 30% by weight. ",
Further, Japanese Patent Publication No. 5-9587 discloses, as a method of applying a mixed material, in the claims, "1. Mixing material prepared by mixing appropriately crushed natural stone into synthetic resin is different. By preparing plural kinds of colors in separate tanks in one spray gun, and simultaneously spraying the plural kinds of mixed materials from separate spray openings of a multi-head spray gun having plural spray openings. , A method for applying a mixed material, which is characterized in that it is applied in a non-mixed multicolored state. "In addition, in Japanese Patent Publication No. 2-22028," 1. After that, the size obtained by resin-bonding the dye or pigment to the mica piece is 1 to 10 m.
The flaky colored mica of m and the resin liquid or paint in a weight ratio of 1:
A method for finishing a stone pattern, which comprises applying a colored mica-containing coating material mixed at a ratio of 99 to 40:60 by a spray or a roller to form a stone pattern layer. Although it is described, none of them is a light material. On the other hand, as a lightweight material, an organic foam material such as polyethylene foam, polyvinyl chloride foam, polystyrene foam, or polyurethane foam, or water-soluble silicate, phosphate, or cement as a binder was used to foam and cure with various foaming agents. Inorganic foam materials have been conventionally known, and they are mainly used as lightweight heat insulating materials and cushioning materials. These materials exhibit the above-mentioned heat insulating effect and light weight effect due to the bubble structure contained therein, and maintain their shape due to the skeleton formed from the constituent components. However, these organic and inorganic foam materials have not been used as a design material by positively imparting colors and shapes other than the use as a lightweight heat insulating material or a cushioning material. For example, JP-A-5
In JP-A 7-212219, "a method for producing a rigid polyurethane foam having open cells", the scope of the claims includes "a method for producing a rigid polyurethane foam from an active hydrogen-containing compound, an organic polyisocyanate, etc. Siloxane-polyoxyalkylene block copolymer having a general formula (AB) _n (wherein n is an integer of 4 or more, A is a siloxane block, and B is a polyoxyalkylene block) as a foaming agent) A method for producing a rigid polyurethane foam having open cells, characterized in that the coalescence and the organic silicon-based surfactant for flexible polyurethane foam are used together. ", JP-A-60-123521. , A patent for a method for producing flame-retardant polyurethane foam The scope, "polyether polyol, an organic isocyanate, water, as well as the raw material of urethane foam containing the required additives such as a catalyst and foam stabilizer, relative to the polyether polyol 100 parts by weight of 10 to 5
A method for producing a flame-retardant polyurethane foam, which comprises adding and mixing 0 part by weight of a triaryl phosphate and 5.0 to 30 parts by weight of a zirconium compound to foam. However, none of them describes the point of imparting a color or shape, particularly the natural stone or the natural stone tone.

[0003]

As described above, the problem to be solved and used by the present invention is, as described above, that none of conventional natural stones, molded articles or coating materials imitating natural stones are lightweight bodies. In the case of what is called a lightweight body, especially in plastic foam, in addition to the purpose as a heat insulating material and a cushioning material,
It is an object of the present invention to provide a composition that solves both of the problems that natural stones and materials that imitate natural stones do not exist at once, and that is lightweight and that forms a natural rock-like three-dimensional shape.

[0004]

In order to solve such problems, the present inventors have conceived to use an in-situ foamable plastic foam, and among them, a specific foamable urethane resin composition is used. Invented a method of doing. That is, the present invention has the following configuration. 1. With respect to polyether polyol, a main agent (A) composed of water, a catalyst and a surfactant, a curing agent (B) composed of an HMDI polyisocyanate, a coloring material (C) and a natural material composed of a filler (D). Rock-like foam decorative material. 2. The coloring material (C) is a colored aggregate and / or a coloring pigment having a particle diameter of 0.1 to 5 mm, and the filler (D) is an inorganic powder having a particle diameter of 0.2 to 250 μm. The natural rock-like foamed decorative finishing material according to claim 1. 3. 1 to 5 parts by weight of water, 1 to 5 parts by weight of tertiary amine catalyst, and 1 to 5 parts of organometallic catalyst to 100 parts by weight of polyether polyol having an OH value of 300 to 800 mg KOH / g and a weight average molecular weight of 1,000 to 10,000. Parts by weight, the surfactant (1-10 parts by weight) of the main agent (A), and an NCO value of 10-2
A curing agent (B) made of 5% HMDI-based polyisocyanurate, a colored aggregate and / or a colored pigment (C) having a particle diameter of 0.1 to 5 mm, and an inorganic powder (having a particle diameter of 0.2 to 250 µ ( D) in parts by weight A: B: C: D = 100: 15
A natural rock-like foamed decorative finish characterized by being mixed in a ratio of 0 to 350: 1 to 300: 10 to 300. The natural rock-like foamed decorative finish of the present invention comprises a main component (A) composed of water, a catalyst and a surfactant, a curing agent (B) composed of an HMDI polyisocyanate, and a coloring material (polyether polyol). It is composed of C) and a filler (D), and is characterized in that a reaction between water and an isocyanate causes a urea bond and carbon dioxide gas. The generation of carbon dioxide gas and the above-mentioned three-dimensional cross-linking of the urea bond and the excess isocyanate form a colored polyurethane foam. The polyether polyol is obtained by reacting one or more polyols with one or more epoxy compounds. Examples of the polyol used include ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, hexylene glycol, glycerin, trimethylolpropane, trimethylolethane, pentaerythritol, 1,2,6-hexanetriol, bisphenol A. , Α-methylglycoxide, sorbitol, sucrose, etc.
00-800 mgKOH / g, weight average molecular weight 1000
The thing of about 10,000 is given. Further, ethylenediamine or the like can also be used. In general, propylene glycol is used, but a high density type sorbitol type or sucrose type is preferable for reasons such as strength. Examples of the epoxy compound include alkylene oxides such as ethylene oxide and propylene oxide, but propylene oxide is generally used. Those used as catalysts are those that have a strong tendency to activate the crosslinking reaction of isocyanate and polyol, and those that have a strong tendency to activate the carbon dioxide gas foaming reaction of isocyanate and water, but those that have both properties. Is the most. Typical examples of such catalysts include tertiary amine compounds and organometallic compounds. Examples of the tertiary amine compound include monoamines such as triethylamine and N, N-dimethylcyclohexylamine, N, N, N ′, N′-tetramethylethylenediamine, N, N, N ′, N′-tetramethylpropane 1, Diamines such as 3-diamine, N, N, N ′,
Triamines such as N ″, N ″ -pentamethyldiethylenetriamine and tetramethylguanidine, cyclic amines such as triethylenediamine, N, N′-dimethylpiperazine and N-methylmorpholine, dimethylaminoethanol,
Examples thereof include alcohol amines such as dimethylaminoethoxyethanol, and ether amines such as bis (2-dimethylaminoethyl) ether and ethylene glycol bis (3-dimethyl) -aminopropyl ether. Examples of the organometallic compound include tin acetate, tin octylate, tin oleate, tin laurate, dibutyltin diacetate, dibutyltin dilaurate, dibutyltin dichloride, lead octanoate, lead naphthenate, nickel naphthenate, cobalt octanoate, etc. Can be given. These tertiary amine compounds and organometallic compounds can be used alone or in combination, and the reaction behavior may be appropriately adjusted by the combination so that the desired polyurethane foam can be produced. The mixing ratio of the tertiary amine compound and the organometallic compound is preferably about 1 to 10 parts by weight in total with respect to 100 parts by weight of the polyether polyol. Particularly, in order to balance the foamability and the curability, the ratio of the tertiary amine compound to the organometallic catalyst is more preferably 5: 1 to 1-5. The surfactant is
Water that is used as a foaming agent is sufficiently emulsified on the oil surface, and when it reacts with isocyanate, it functions as a foam stabilizer that forms a uniform foam, which is a reaction product of a non-polar phenol and an appropriate amount of ethylene oxide. Is used.
Further, a sulfonated compound, a polysiloxane-polyoxyalkylene copolymer, or the like is used as a substance that functions as a stabilizer for the foam formed. Further, as the one functioning as a foam stabilizer, one based on methylpolysiloxane is used. The mixing ratio of the surfactant is 1 to 100 parts by weight of the polyether polyol.
It is desirable that the amount is about 10 parts by weight. Next, the mixing ratio of water is 1 with respect to 100 parts by weight of polyether polyol.
~ 5 parts by weight. Next polyisocyanate is tolylene diisocyanate, xylylene diisocyanate,
Diphenylmethane diisocyanate, HMDI, isophorone diisocyanate and carbodiimide modified products, buret modified products, dimers, trimers and prepolymers of these isocyanates having an NCO value of about 10 to 25% can be mentioned. HMDI and its trimer (isocyanurate type) are more preferable because they are excellent in denaturation and weather resistance. The compounding ratio of the polyisocyanate varies to some extent depending on the combination with the polyol, but is 10 parts with respect to 100 parts by weight of the main component (A) component consisting of the polyether polyol, water, the catalyst and the surfactant.
0 to 400 parts by weight. Particularly, when HMDI or its trimer (isocyanurate type) is used, it is preferably 150 to 350 parts by weight from the viewpoint of excellent yellowing resistance and weather resistance. Further, examples of the coloring material include a coloring pigment and / or a coloring aggregate. Such coloring pigments include inorganic and organic pigments. Examples of the inorganic pigments include titanium dioxide, zinc white, lithopone, white oxide such as zircon oxide, synthetic iron oxide (Fe ₂ O ₃ ) and red iron oxide. And red, synthetic iron oxide (α-FeO · OH), yellow such as oak, green such as chromium oxide, cobalt blue, blue such as ultramarine, and black such as carbon black. On the other hand, as an organic pigment, azo pigments such as Brilliant Carmine 6B, Watching Red, Lake Red 4R, Permanent Red FB, Hansa Yellow G, Disazo Yellow G, Permanent Yellow HR
Such as insoluble azo-based pigments, condensed azo-based pigments such as chromophtal red, chromophtal yellow 3G, and Novapalm orange HL, as a condensed polycyclic pigment, copper phthalocyanine,
Chlorinated copper phthalocyanine and other phthalocyanines, indanthrone, anthrapyrimidine, flavanthrone, perenone, thioindigo, perylene and other slene, quinacridone quinacridone, dioxazine violet and other dioxazine, isoindolinone yellow, etc. Examples thereof include isoindolinone type, isoindoline type such as isoindoline yellow, quinophthalone type such as quinophthalone yellow, and metal complex such as azo type nickel complex.
Other examples include dyed lake type pigments. The colored aggregate may be natural or artificial. For example, as natural aggregate, silica sand, river sand, mountain sand, cold water stone, white dragon stone, white king, granite, mica, etc.As artificial aggregate, ceramic powder particles, colored glass powder particles, perlite, vermiculite, colored silica sand , Colored mica, titanium mica and the like. Further, when it is combined with these colored aggregates, transparent aggregates such as glass particles and fused silica can be used. The particle size of these colored aggregates is not particularly limited, but in consideration of the influence on the foaming reaction and the problem of sedimentation due to the difference in specific gravity, the particle size is 0.1 to 5
About mm is desirable. The compounding ratio of these coloring pigment and colored aggregate is preferably about 1 to 300 parts by weight per 100 parts by weight of the component (A) in combination. Kaolin, talc, mica, calcium carbonate, barium sulfate, zinc white, silica, aluminum hydroxide, alumina, fly ash, bentonite, and ceramic powder can be used as the filler, and the component (A) component is 100.
It is 10 to 300 parts by weight with respect to parts by weight. Further, if necessary, fiber materials such as rock wool, glass fiber, carbon fiber, steel fiber and the like can be appropriately blended.
If necessary, a flame retardant may be added to the finishing material of the present invention. Such flame retardants include antimony trioxide, modified barium metaborate, chlorinated polyolefin, melamine, aluminum hydroxide, magnesium hydroxide, calcium carbonate, chloroalkyl phosphate,
Non-reactive substances such as dimethyl methyl phosphate, polymeric phosphite, bromine-phosphorus compounds, organic bromine compounds, ammonium polyphosphate, diethyl bishydroxyethyl aminoethyl phosphate, neopentyl bromide-polyether, neopentyl Reactive substances such as bromide-adipate, dibromopropanol, dibromoneopentyl glycol, trans, 2,3-dibromo-2-butyne-1,4-diol, brominated polyether can be used, and they do not hinder the foaming curing reaction. It can be appropriately mixed depending on the degree. As described above, the finishing material of the present invention gradually starts the foaming and curing reaction by mixing the respective components on site. At this time, iron, brush,
Apply by applying with a roller. Also, spray the mixture, spray the curing agent and other components separately with a multi-head gun and mix them on the construction surface, or use a static mixer to mix the tips and spray, and finish differently adjusted finishing materials as well. It is possible to spray in a non-mixed state with a multi-headed gun, or to spray by mixing the tips with a static mixer. The colored aggregate and the filler may be added to the main agent side in the pre-prepared type, or when the main agent and the curing agent are mixed. Next, when the natural rock-like foamed decorative finish of the present invention is used on the surfaces of buildings and civil engineering structures, it is necessary to apply a primer layer. As a primer, when the base is a concrete surface, it has excellent adhesion and sealability to a concrete base such as a one-component moisture-curing type urethane resin primer and a one-component and two-component reaction curing type epoxy resin primer. Penetrating primers are preferred.
In some cases, an epoxy resin filler that is emulsified and hardened by a water-dispersed modified amidoamine adduct may be used. Further, when the base is an iron part, an epoxy lead tin primer or the like can be used. The natural rock-like foamed decorative finishing material of the present invention is not only used on the surface of buildings and civil engineering structures, but is also poured into a formwork or simply flowed down an appropriate amount on a horizontal surface to foam, resulting in a solid stone-like solid. A shape can be formed. The three-dimensional pattern shape formed from the natural rock-tone foamed decorative finish of the present invention can be further subjected to various makeup finishes on the surface thereof through a primer. Such decorative coating materials include various types of water-based and solvent-based coloring and transparent coating materials, and in particular, a natural stone finish coating material containing a colored aggregate containing a synthetic resin emulsion as a binder is applied. In this case, the three-dimensional pattern shape looks like a natural rock, which has a great effect on improving the aesthetics even in the distant view. As another embodiment of the present invention, instead of a building and a civil engineering structure, a concrete board, an ALC board, a gypsum board, a slate board, a wood wool cement board, a glass board, a metal board,
There is a foam thickened decorative plate material obtained by subjecting a plate material such as a plastic plate to foam thickening finish, and further applying a natural stone tone coating material through a primer. Such plate materials, which have been manufactured in advance in factories, etc., are brought into the building civil engineering work site and attached or attached,
Similarly, it is possible to show a profound feeling in a distant view.

[0005]

【Example】

(Example 1) According to the formulation example 1 shown in Table 1, the main agent (A), the curing agent (B), the coloring material (C), the filler (D).
Was adjusted, and a slate plate with a thickness of 6 mm was coated with a one-component modified epoxy resin-based primer, and when it was not dried, a joint frame made of expanded polystyrene with a thickness of 2 mm was attached, and the length was 100 m.
A frame of m × width 200 mm × depth 2 mm was formed, and after the primer was dried and cured, a mixture of (A) and (B) was poured into this frame to produce a foam. At this time, the foaming start time and the foaming end time, the foaming ratio and the density of the foam were measured at the same time. Further, a physical property test was performed according to the test method described below, using the formed foam as a test piece in a state of being attached to the slate plate. (However, only the measurement of the compressive strength was separately made.) The components shown below were used as the components used in the formulation examples. Polyether polyol Sumitomo Bayer Urethane Co., Ltd. sorbitol / polyethylene oxide type “SBU polyol 0480” Tertiary amine Sumitomo Bayer Urethane Co., Ltd. 2,4,6-Tris (dimethylaminomethyl) phenol “Desmorapid DB” Silicon type foam stabilizer Agent Toray Silicon Co., Ltd. “SH193” Stannous octoate Nitto Kasei Co., Ltd. “T-9” HMDI polyisocyanate Sumitomo Bayer Urethane Co., Ltd. HMDI isocyanurate “Sumijour N3500” TDI polyisocyanate Sumitomo Bayer Urethane Co., Ltd. TDI-based isocyanate "Sumijour T-80" MDI-based polyisocyanate Sumitomo Bayer Urethane Co., Ltd. MDI-based isocyanate "Sumijour 44V10"<compressed The compressive strength was measured according to the compression test method in degrees> JIS K 7220-1983 rigid cellular plastics. The test body was prepared by adjusting the main component (A), the curing agent (B), the coloring material (C) and the filler (D) according to the formulation example 1 shown in Table 1 and
Mix in a 00 cc polyethylene cup to form a foam. After the foam-curing reaction is complete, the foam is
It was cut out into a cube of cm square and used. The moving speed of the crosshead was 10 mm / min. <Adhesive strength> According to JIS K 5400 8.7 Adhesive strength test method, 40 mm x 40 mm steel jig is bonded with a two-component epoxy resin adhesive on the surface of the above-mentioned test piece that is roughened with sandpaper. To do. After 24 hours, make a cut along the steel jig to a size of 40 mm × 40 mm until it reaches the slate plate, and use a steel jig for lower tension and a steel patch plate to automatically move vertically to the sample surface. The maximum tensile load was determined by applying tensile force on the graph. <Water resistance test> The test piece was immersed in water for 14 days, dried at room temperature, and the surface condition was observed to evaluate the change in the condition before immersion. The evaluation criteria were as follows: o no abnormality, o whitening, and x surface erosion. <Acid resistance test> After being immersed in a 3% hydrochloric acid aqueous solution for 7 days, it was dried at room temperature and the surface condition was observed to evaluate the change in the condition before immersion. The evaluation criteria were as follows: o no abnormality, o whitening, and x surface erosion. <Solvent resistance test> After being immersed in toluene for 3 days, it was dried at room temperature, and the surface condition was observed to evaluate the change in the condition before immersion. The evaluation criteria were ◯ when there was no abnormality, and x when the surface was softened. <Weather resistance test> JIS K 5400 9.3 A sunshine carbon arc lamp type weather resistance tester stipulated in the accelerated weather resistance test is used to perform an accelerated test for 1000 hours and then dry at room temperature. Changes in status were evaluated.
As for the evaluation criteria, those with no abnormality are ○, those with whitening are △,
The surface eroded material was designated as x. The results of these tests are shown in Table 2. From the results, it was found that the foam produced in Formulation Example 1 had sufficient performance in each physical property.

[Table 1]

[Table 2] (Examples 2 to 3) A physical property test was conducted in the same manner as in Example 1 except that the compounding examples 2 and 3 were used, respectively. As a result, the compounding example 2 had a granite tone, and the compounding example 2 had a slight yellow tint. It became a sharp granite tone. The results are shown in Table 2, and as with Example 1, it was found that each foam had sufficient performance in each physical property. (Comparative Examples 1 to 3) A physical property test was conducted in the same manner as in Example 1 except that Formulation Example 4, Formulation Example 5 and Formulation Example 6 were used. However, the foaming start time could not be measured because the reaction started immediately after mixing the main material (A) and the curing agent (B). The results are shown in Table 2. It was found that all of them had low compressive strength and adhesive strength, and turned yellow in a weather resistance test and could not be used as a natural rock-like foamed decorative finishing material.

[0006]

INDUSTRIAL APPLICABILITY The present invention is a material and method capable of imparting a thick three-dimensional pattern shape to a base material layer of a building and a civil engineering structure.
There is a merit that a prominent design can be obtained even in a distant view. Other advantages of the present invention are listed below. (1) There is no risk of peeling and dropping because it is lightweight despite being thick. (2) Since the foamed urethane resin composition can be applied on-site by coating, a large-scale work such as manufacturing, transporting, and mounting a molded product is not necessary. (3) Since it is a coating operation, it can be applied to any part such as unevenness or curved surface of the base. (4) Since an HMDI-based polyurethane foam is formed, it has excellent weather resistance and acid resistance even when used externally. As a result, the surface is less likely to deteriorate even by acid rain. (5) Since the closed-cell polyurethane foam is formed, intrusion of rainwater from the outside is unlikely to occur, and swelling, peeling, and freezing breakage in winter are also unlikely to occur. (6) Since the foaming-curing reaction of the foaming urethane resin composition is fast and heat is generated, the construction period can be shortened and the construction can be performed in cold regions.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location C04B 14:02 A 14:36 24:40) (C08G 18/08 101: 00) C04B 103: 50 111: 40 (72) Inventor Norihiko Yoshioka 1-25-10 Shimizu, Ibaraki-shi, Osaka SK Kaken Co., Ltd. (72) Inventor Shin Yamamoto 1-25-10 Shimizu, Ibaraki-shi, Osaka SK Kaken Co., Ltd. Company research institute

Claims (4)

[Claims] 1. A main agent (A) composed of water, a catalyst and a surfactant, and a curing agent (B) composed of hexamethylene diisocyanate (hereinafter referred to as HMDI) polyisocyanate for polyether polyol. A natural rock-like foamed decorative finish comprising a coloring material (C) and a filler (D). 2. The coloring material (C) has a particle diameter of 0.1 to 5 mm.
The colored aggregate and / or the colored pigment, and the filler (D) is an inorganic powder having a particle diameter of 0.2 to 250 μm. 3. An OH value of 300 to 800 mg KOH / g and a weight average molecular weight of 1,000 to 10,000 are 100 parts by weight of a polyether polyol, and 1 to 5 parts by weight of water, and 3.
1 to 5 parts by weight of a primary amine catalyst, 1 to 5 parts by weight of an organometallic catalyst, 1 to 10 parts by weight of a surfactant as a main agent (A), and NCO
Hardening agent (B) consisting of HMDI-based polyisocyanurate having a valence of 10 to 25%, colored aggregate and / or coloring pigment (C) having a particle diameter of 0.1 to 5 mm, and particle diameter of 0.2 to 25
0 μ of the inorganic powder (D) is A: B: C: D = 100: 1
A natural rock-like foamed decorative finish characterized by being mixed in a ratio of 50 to 350: 1 to 300: 10 to 300. 4. An artificial stone material produced by using the natural rock-like foamed decorative finishing material according to claim 3.