JP3086349B2 - In-mold coating composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold capable of forming defects such as pinholes and fiber patterns generated on the surface of a fiber-reinforced plastic molded article and improving the appearance quality and forming a smooth film. It relates to an inner coating composition.

[0002]

2. Description of the Related Art A glass fiber, a carbon fiber, an organic material having a matrix of a thermosetting resin or a thermoplastic resin such as a sheet molding compound (SMC), a bulk molding compound (BMC), a stampable sheet or the like. Fibers, moldings obtained from fiber-reinforced plastic molding materials such as mineral fibers,
Because of its excellent mechanical strength, moldability, etc., and its light weight, it is widely used as a material instead of metal in the fields of electric equipment cases, automobile outer panels, housing equipment parts and the like.
However, these moldings have pinholes, burrows,
It has surface defects such as minute cracks and fiber patterns, and has poor gloss, poor appearance quality, poor weather resistance, water resistance, chemical resistance, etc., and low surface hardness. . Therefore, these molded products are usually coated to form a protective coating on the surface. However, as described above, since the molded products have many surface defects, they are coated by ordinary coating means such as spraying. However, even if it is difficult to form a film having excellent appearance such as smoothness, the adhesion is low, and when applied to a molded article using a thermoplastic resin as a matrix, solvent cracks are easily generated by an organic solvent in the paint. In addition, there is a problem that painting workability is poor. Therefore, as a solution to these problems,
In-mold coating methods have been proposed. For example, U.S. Pat.
No. 84527, No. 4076788, No. 4668460, etc.

However, since this in-mold coating method is a special method, it has been difficult to use a conventional paint as it is. Therefore, in-mold coating compositions suitable for the in-mold coating method have recently been developed. For example, Japanese Patent Publication No. 54-1327
No. 3, JP-B-59-15137, JP-B-59-19583, and the like. These in-mold coating compositions cover the surface defects of the molded product and have good coating workability, but the resulting coating has insufficient smoothness, and is particularly fiber-reinforced using a thermoplastic resin as a matrix. There was a problem that the adhesion to the plastic molded product was poor. In view of this situation, the present inventors have conducted intensive studies and found that an in-mold coating capable of forming a film having excellent smoothness and adhesion while utilizing the advantages of the conventional in-mold coating composition. SUMMARY OF THE INVENTION A composition has been found and has led to the present invention.

[0004]

That is, the present invention provides:
(i) a vehicle component comprising an oligomer having at least two or more (meth) acrylate groups or a resin thereof, or 20 to 70% by weight of an unsaturated polyester resin and 80 to 30% by weight of a copolymerizable ethylenically unsaturated monomer; The present invention provides an in-mold coating composition in which (ii) 1 to 50 parts by weight of a chlorinated polypropylene having a chlorine content of 10 to 50% by weight is added to 100 parts by weight. Hereinafter, the present invention will be described.

The in-mold coating composition used in the present invention comprises an oligomer having at least two or more (meth) acrylate groups or a resin thereof, or a vehicle component comprising an unsaturated polyester resin and an ethylenically unsaturated monomer.
(i), chlorinated polypropylene (ii) and commonly used pigments (iii), polymerization initiator (iv) and release agent (v), further modified resins added if necessary, various additives Etc. As the oligomer having at least two or more (meth) acrylate groups or the resin thereof constituting the vehicle component (i), specifically, epoxy (meth) acrylate, urethane (meth) acrylate, polyester (meth) acrylate And oligomers or liquid resins commonly used as a vehicle component of the in-mold coating composition such as polyether (meth) acrylate or a mixture of two or more thereof.

[0006] These oligomers or resins thereof differ depending on the kind, but generally have a weight average molecular weight of about 30.
It is preferably from 0 to 10,000. The oligomer or its resin preferably has at least two, preferably 2 to 4, (meth) acrylate groups per molecule of the oligomer or its resin. Hereinafter, the oligomer of the present invention or its resin will be specifically described. The epoxy acrylate compound comprises a carboxyl equivalent of an epoxy compound and an unsaturated carboxylic acid per equivalent of an epoxy group.
It is a compound which is used in a ratio of 0.5 to 1.5 and is produced by a conventional ring-opening addition reaction of an acid to an epoxy group.
Typical examples of the unsaturated carboxylic acid include acrylic acid and methacrylic acid, and examples of the epoxy compound include bisphenol A type epoxy and phenolic novolak type epoxy. .

The urethane (meth) acrylate compound comprises an organic diisocyanate, an organic diol having a hydroxyl group and a hydroxyalkyl (meth) acrylate.
It is produced by a usual method at a ratio such that the ratio of NCO / OH becomes 0.9 to 1.0. For example, an organic diisocyanate and an organic diol are produced in the presence of a urethanization catalyst such as dibutyltin dilaurate. To produce an isocyanate-terminated polyurethane prepolymer, followed by reaction with a hydroxyalkyl (meth) acrylate until most of the free isocyanate groups have reacted. The ratio of the organic diol to the hydroxyalkyl (meth) acrylate is preferably about 0.1 to 0.5 mol per 1 mol of the latter. As the organic diisocyanate, organic diisocyanates which are usually used for coatings such as toluene diisocyanate, isophorone diisocyanate and polymethylene polyphenyl diisocyanate can be used. In particular, 2,4- and 2,6-isomers of toluene diisocyanate can be used. Are useful.

Examples of the organic diol include alkylene diols such as ethylene glycol, propylene glycol, diethylene glycol, polyethylene glycol and polypropylene glycol, and diester diols which are diester reaction products of dicarboxylic acids or anhydrides thereof. Can be. Examples of the hydroxyalkyl (meth) acrylate, formula _{CH 2 = CRCO 2 - (C} n H 2n) -OH ( where, R represents -H or CH _3, n is a positive number of 2 to 8) a compound represented by Is useful. The polyester acrylate is a compound produced by reacting a hydroxyl-terminated polyester polyol with the aforementioned unsaturated carboxylic acid. The polyester polyol is typically obtained by an esterification reaction between a saturated or unsaturated dicarboxylic acid or an acid anhydride thereof and an excess amount of an alkylene diol. Typical examples of the dicarboxylic acid include oxalic acid, succinic acid, adipic acid, and maleic acid phthalate, and examples of the alkylene diol include ethylene glycol, propylene glycol, butanediol, and pentanediol.

The polyether acrylate is a compound produced by reacting a polyether polyol such as polyethylene glycol or polypropylene glycol with the above-mentioned unsaturated carboxylic acid. The weight average molecular weight of these oligomers or their resins is from about 300 to 10,
000, preferably 500-5,000. As the unsaturated polyester resin constituting the vehicle component (i), those commonly used as a vehicle component of the in-mold coating composition can be used, and an organic polyol and an unsaturated polycarboxylic acid are reacted by a known method. And, if necessary, further reacted with a saturated polycarboxylic acid. In addition, as the organic polyol, ethylene glycol, propylene glycol, triethylene glycol,
Trimethylolpropane, glycerin, bisphenol A, bisphenol S and the like can be mentioned as typical examples, and as the unsaturated polycarboxylic acid,
Representative examples include (anhydride) maleic acid, fumaric acid, (anhydride) itaconic acid, and the like. The average molecular weight of the unsaturated polyester resin is suitably about 800 to 10,000, preferably 1,000 to 4,000.

The oligomer having a (meth) acrylate group or the resin thereof and the unsaturated polyester resin are:
It is also possible to use them together. Examples of the ethylenically unsaturated monomer constituting the vehicle component (i) include styrene, α-methylstyrene, chlorostyrene, vinyltoluene, divinylbenzene, methyl (meth) acrylate, ethyl (meth) acrylate, and propyl (meth). Acrylate, ethylene glycol (meth) acrylate, trimethylolpropane tri (meth) acrylate, and the like can be given as typical examples, but are not limited thereto.

The vehicle component (i) comprises the oligomer having a (meth) acrylate group or the resin thereof, or the unsaturated polyester resin and the ethylenically unsaturated monomer, and the mixing ratio is arbitrarily determined depending on these types. However, usually (20 to 70:80 to 30) [weight basis] is appropriate, and a coating composition having appropriate curing characteristics and viscosity can be obtained in this range. The chlorinated polypropylene (ii) used in the present invention is blended to improve the smoothness and adhesion of a film formed on the surface of the molded product. The chlorinated polypropylene referred to in the present invention is a homopolymer of propylene or a polymer obtained by chlorinating a copolymer with ethylene, butene, or the like containing about 70 mol% or more of propylene, and has a number average molecular weight of about 5,000 to 50,000. , Especially 10,0
It is preferably between 00 and 40,000. The reason for specifying the number average molecular weight in this manner is that when the number average molecular weight is less than 5,000, the smoothness tends to decrease, while when the number average molecular weight exceeds 50,000, the above-mentioned vihicle component is reduced.
This is because the compatibility with (i) tends to decrease. The chlorine content of the chlorinated polypropylene (ii) is 10 to 50.
%, Preferably 20-45% by weight. If the chlorine content is larger than the above range, the adhesion of the coating decreases, and if the chlorine content is small, the storage stability of the coating composition deteriorates, and a smooth coating is hardly obtained. The amount of the chlorinated polypropylene is 1 to 50 parts by weight, preferably 2 to 100 parts by weight of the vehicle component (i).
The amount is suitably from 30 to 30 parts by weight, and in this range, a coating film having excellent smoothness and adhesion can be obtained. It is to be noted that an excessive amount is not preferred because the adhesion, weather resistance and the like are reduced.

As the pigment (iii) used in the present invention, various coloring pigments and extenders conventionally used for plastics and coatings can be used. Typical examples of the coloring pigment include titanium oxide in a white system; benzidine yellow, titanium yellow and hanza yellow in a yellow system; molybdate orange, graphite, and benzene orange in an orange system; and quinacridone in a red system. Maroon; chrome green, chromium oxide green for green; ultramarine, cobalt blue, ultramarine for blue; powdered pigments such as carbon black and iron oxide or flake iron oxide, nickel, aluminum, graphite, and oxide for black There is a flaky pigment such as mica treated with titanium or the like. Typical extenders include calcium carbonate, talc, barium sulfate, aluminum hydroxide, silica, clay and the like. In addition, the pigment is used to color the molded product to give it an aesthetic appearance, to disperse the shrinkage stress caused by film hardening, to improve the adhesion to the substrate (molded product), and to fill the numerous cavities existing on the surface of the molded product. It is blended for the purpose of smoothing out fine irregularities (waviness) on the surface and improving the appearance of the molded product surface.

Therefore, the compounding amount of the pigment is the same as that of the component (i) 10
10 to 150 parts by weight to 0 parts by weight is appropriate. It is not always necessary to add a color pigment when a top coat is applied to the obtained coating or when a clear finish is applied. The polymerization initiator (iv) used in the present invention generates free radicals and is used for polymerizing the vehicle component. Representative examples of the polymerization initiator include tertiary butyl peroxybenzoate, tertiary butyl peroxy 2-ethylhexanoate, tertiary butyl peroxyisopropyl carbonate, lauroyl peroxide, and tertiary butyl peroxybenzoate. L-butylperoxylaurate, 1,1-bis (tert-butylperoxy)-
3,3,5-trimethylcyclohexane, acetylacetone peroxide and the like.

The amount of the polymerization initiator is suitably 0.2 to 10 parts by weight based on 100 parts by weight of the vehicle component (i). The release agent (v) used in the present invention is added to smoothly release the cured film from the mold. Examples of the type include stearates such as zinc, aluminum, magnesium, and calcium. Lecithin, alkyl phosphate and the like can be mentioned as typical ones,
The amount is based on 100 parts by weight of the vehicle component (i).
0.1 to 10 parts by weight is suitable. The in-mold coating composition of the present invention comprises the above-described components (i) to (v) as components, and furthermore, if necessary, a curing accelerator, a dispersant, an anti-settling agent, a flow aid, a polymerization inhibitor, and ultraviolet absorption. And various additives such as an agent, a modified resin such as a polymethyl methacrylate resin, a saturated polyester resin and a vinyl acetate resin, and a plasticizer.

Next, a method for in-mold coating using the in-mold coating composition of the present invention will be described. The fiber-reinforced plastic molding material used in the present invention is SMC, BMC, FRT
Conventionally known materials such as P and a stampable sheet can be used without any particular limitation. Specifically, unsaturated polyester resin type, epoxy acrylate resin type,
Phenolic resin type, thermosetting resin such as epoxy resin type or polyolefin resin type, polystyrene resin type, polycarbonate resin type, polybutylene terephthalate resin type, polyester resin, polyphenylene oxide resin type etc. The fiber-reinforced plastic molding material is a typical example. As a molding method, a conventional method of molding in a mold can be used without any particular limitation.
And Japanese Patent Publication No. 55-9291. That is, one mold is fitted into the other mold (hereinafter, the former is referred to as “lower mold” and the latter is referred to as “upper mold” for convenience), so that the cavity having the shape of the target molded product is obtained. The above-mentioned fiber-reinforced plastic molding material is put into a mold that forms a space, fitted, and molded in the mold. That is, when the molding material has a thermosetting resin as a matrix, the molding material is heated and pressurized in a mold to cause the molding material to flow and to undergo a thermosetting reaction, thereby forming a desired shape. The molding heating temperature is arbitrarily determined depending on the molding time, the type of molding material, etc., but is usually 130 to 200 ° C. The mold is previously set to the above temperature before the molding material is charged, and the cured film described later is formed. Is desirably maintained at this temperature until is obtained.

The molding pressure is arbitrarily determined depending on the heating temperature, the type of the molding material, and the like, but usually 50 to 200 kgf / cm ² is appropriate. The molding time may be until the molding material is completely completed with the thermosetting reaction, but when the in-mold coating composition is injected,
It is sufficient that the molded product is cured to a strength that does not impair the shape of the molded product, and usually about 40 to 200 seconds is appropriate. On the other hand, when the molding material has a thermoplastic resin as a matrix, the material that has been heated and softened in advance by a heating oven or the like is pressurized in a mold to form the molding material into a desired shape, and the in-mold coating composition is injected. At this time, the molded product is cured to a strength that does not impair the shape of the molded product. After the molded product is cured in this way, the upper mold is separated from the surface of the molded product and is larger than a desired cured coating thickness described later, but is insufficient to release the fitting of the mold. After the gap is provided, or after the molding pressure is maintained while the mold is fitted and no gap is provided, or after the pressure is reduced, a cured film having a desired film thickness, preferably 30 to 1000 μm, is formed. Is injected (injection injection) between the upper mold and the surface of the molded article in such an amount as to obtain the following.

Next, when the molding material has a thermosetting resin as a matrix, the heating composition is maintained at a predetermined temperature while the coating composition uniformly covers the surface of the molding and is about 20 to 150 so as to penetrate. kgf / cm ² (re) pressurized,
It is usually maintained for about 20 to 240 seconds until a cured film is formed. On the other hand, when the molding material has a thermoplastic resin as a matrix, the coating composition is not re-softened and the coating composition is cured while maintaining the mold temperature at a temperature at which the coating composition cures, for example, 60 to 160 ° C. It is (re) pressurized to about 20 to 150 kgf / cm ² so as to uniformly cover the surface of the molded article and penetrate, and usually maintained for about 20 to 240 seconds until a cured film is formed. In this case, the lower the curing temperature of the coating composition is, the more desirable it is. Therefore, it is desirable to use a curing accelerator such as cobalt naphthenate and amine together. After the cured film is formed on the surface of the molded product in this way, the mold is opened and the molded product is taken out to obtain a molded product having a protective coating.

[0018]

The in-mold coating composition of the present invention can cover surface defects such as pinholes on the surface of a fiber-reinforced plastic molded product and can form a coating film having excellent smoothness and adhesion. is there.

The present invention will be described below in more detail with reference to examples. In the examples, "parts" and "%" are based on weight. Examples 1 to 3 and Comparative Examples 1 to 5 The components shown in Table 1 (excluding the polymerization initiator) were kneaded and dispersed, and the polymerization initiator was added immediately before use to prepare an in-mold coating composition.

[0019]

[Table 1] [Table 1] ──────────────────────────────────── Example Comparative example ──────────────────────── 1 2 3 1 2 3 4 5 ────────────────── ────────────────── Urethane acrylate Note 1) 36 26 36 36 36 36 Epoxy acrylate Note 2) 14 9 14 14 14 14 Unsaturated polyester Note 3) 25 25 Resin Tylene 40 55 65 40 40 40 40 65 Hydroxypropyl 10 10 10 10 10 10 Methacrylate Trimethylolpropane 10 10 Trimethacrylate Chlorinated polypropylene Note 4) 15 15 0.5 60 Polypropylene Note 5) 15 Chlorinated polypropylene Note 6) 15 Chlorine Polypropylene Note 7) 12 Carbon black 7 8 8 7 7 7 7 8 Turk 60 60 40 60 60 60 60 40 Zinc stearate 0.5 0.7 0.7 0.5 0.5 0.5 0.5 0.7 8% Octyl Cobalt 1 2 2 1 1 1 1 2 Modified resin Note 8) 10 10 Tertiary butyl 5 5 3 5 5 5 5 3 Peroxybenzoate ────────────────── ────────────────── (Unit: parts)

Note 1) Polyethylene glycol-tolylene diisocyanate-hydroxyethyl acrylate oligomer; weight average molecular weight 2700; 2 acrylate groups per molecule Note 2) Epoxy compound [Epicoat 828 (manufactured by Yuka Shell Epoxy)] -Methacrylic acid oligomer; weight average molecular weight 540; two methacrylate groups per molecule * 3) polybasic acid consisting of 1 mol of maleic anhydride and 1 mol of isophthalic acid, 1 mol of neopentyl glycol and 1 mol of propylene glycol Reaction product with polyhydric alcohol; number average molecular weight 1500 * 4) Chlorine content 41%, number average molecular weight 35,000 * 5) 〃 0%, 〃 30,000 * 6) 〃 60%, 〃 40,000 * 7) 〃 25%, 〃 40,000 Note 8) Vinyl acetate resin

Using the in-mold coating compositions obtained in Examples 1 to 3 and Comparative Examples 1 to 5, a molded article having a coating was formed according to a molding apparatus and a molding method described in JP-A-61-273921. Manufactured under the following conditions. This method will be described in detail below.
Using a chromium-plated flat plate test mold having a length of 300 mm and a width of 300 mm, the mold was set at 120 ° C. First, a thermoplastic glass fiber reinforced plastic material sheet (glass fiber content: 40%) containing a polypropylene resin as a matrix is heated to about 200 ° C. in a heating oven, and the sheet is set on a lower mold. The molding was performed under the conditions of / cm ² and a molding time of 30 seconds. Then, after the molding pressure was reduced to 20 kgf / cm ² , 19 ml of the above-mentioned in-mold coating composition was poured between the upper mold and the molded product, and the pressure was again increased to 70 kgf / cm ² and maintained for 180 seconds. Next, the mold was opened, and the coated product covered with the coating having a thickness of about 200 μm was taken out. For the obtained coated molded product, each test of coating appearance, surface roughness, adhesion, hot water resistance was performed,
The results are shown in Table 2. As is clear from Table 2, the coating films obtained in Examples 1 to 3 using the coating composition of the present invention were excellent in appearance, smoothness, adhesion and hot water resistance.
On the other hand, Comparative Example 1 in which unchlorinated polypropylene was used and Comparative Example 5 in which chlorinated polypropylene was not blended, the coating was partially formed in a mold, a uniform coating was not obtained, and the commercial value was low. Was. In Comparative Example 2 using chlorinated polypropylene having a large chlorine content and Comparative Example 3 having a small amount of chlorinated propylene, the film appearance, adhesion, and resistance to warm water were also reduced. Comparative Example 4, in which the amount of chlorinated polypropylene was excessive, had poor warm water resistance.

[0022]

[Table 2] [Table 2] ─────────────────────────────────── Example of implementation ──── ────────────────── 1 2 3 ─────────────────────────────外 Coating appearance Note 9) Passing Matching Passing surface roughness Note 10) 5.4 5.6 6.8 Adhesion Note 11) 100/100 100/100 100/100 Hot water resistance Note 12 ) 100/100 100/100 100/100 ───────────────────────────────────

[Table 2] Continued ─────────────────────────────────── Comparative Example 例──────────────────── 1 2 3 4 5 ───────────────────────── ────────── Coating appearance Note 9) Fail Fail Fail Pass Fail Surface roughness Note 10)-7.6 17.1 10.6-Adhesive property Note 11)-60/100 10 / 100 90/100 − Hot water resistance Note 12) − 10/100 0/100 5/100 − ────────────────────────── ─────────

Note 9) A two-pack type urethane paint is spray-coated on the coated molded product so as to have a dry film thickness of 35 ± 5 μm.
After drying at ℃ for 30 minutes, the appearance was visually observed. Pass: No abnormality in the coating, Reject: Abnormality such as cracks or cracks in the coating Note 10) According to JIS B 0601-1982. Unit: Rmax [μm] Note 11) A 2 mm-wide square cut cellophane tape peeling test was performed on the overcoated product obtained in Note 9), and the number of remaining stitches was counted. In addition, neither the thing peeled from the molding base material nor the thing which peeled only the top coat film was counted in the number of remaining stitches. Note 12) The coated coated product obtained in Note 9) was immersed in warm water of 40 ° C for 240 hours, allowed to stand at room temperature for 1 hour, and subjected to the same adhesion test as in Note 11).

Examples 4 to 6 and Comparative Examples 6 to 9 The components shown in Table 3 (excluding the polymerization initiator) were kneaded and dispersed, and the polymerization initiator was added immediately before use to prepare an in-mold coating composition. did.

[Table 3] [Table 3] ──────────────────────────────────── Example Comparative example ──────────────────────── 4 5 6 6 7 8 9 ─────────────────── ───────────────── Urethane actarate Note 1) 32 50 32 32 32 32 Epoxy acrylate Note 2) 32 30 32 32 32 32 Polyester Note 15) 30 Acrylate styrene 30 30 40 30 30 30 30 Hydroxypropyl 6 10 10 6 6 6 6 Methacrylate Chlorinated polypropylene Note 4) 2 2 40 60 Polypropylene Note 5) 2 Chlorinated polypropylene Note 6) 2 Oxidized titanium 20 20 20 20 20 20 20 talc 20 20 20 20 20 20 20 Calcium carbonate 60 60 60 60 60 60 60 Zinc stearate 0.6 1 0.6 0.6 0.6 0.6 0.6 8% Cobalt octylate 1 1 1 1 1 1 1 Acetylacetone 0.2 0.2 0.2 0.2 0.2 Butyl 4 4 4 4 4 4 4 Peroxybenzoate ──────────────────────────────────── (units )

Note 15) "Photomer 5018" (manufactured by San Nopco); weight-average molecular weight 600; four acrylate groups per molecule.
A thermoplastic glass fiber reinforced plastic material sheet (glass fiber content 35%) with a matrix of polybutylene terephthalate resin heated to 0 ° C is set, and the molding pressure is set.
Molding was performed under the conditions of 200 kgf / cm ² and a molding time of 30 seconds. Then after releasing the molding pressure, the injected between the upper mold and the molded product of the mold coating composition 10 ml, pressurized to 60 kgf / cm ² again, 90
Hold for 2 seconds. Next, the mold was opened, and the coated molded product covered with the coating having a thickness of about 100 μm was taken out. The same test as in Example 1 was performed on the obtained coated molded product, and the results are shown in Table 4.

[0027]

[Table 4] [Table 4] ──────────────────────────────────── Example Comparative example {4 5 6 6 7 8 9}被膜 Coating appearance Note 9) Passed Passed Passed Not passed Not passed Not passed Surface roughness Note 10) 7.9 10.1 8.1 19.1 18.0 11.3 19.1 Adhesion Note 11) 100/100 100/100 100/100 20/100 80/100 90/100 20/100 Hot water resistant Note 12) 100/100 100/100 100/100 15/100 50/100 10/100 10/100 ────────────────────────────────────

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁷ Identification code FI C08L 63/10 C08L 63/10 67/06 67/06 75/16 75/16 // B29K 105: 06 (56) References Special JP-A-3-248810 (JP, A) JP-A-4-142322 (JP, A) JP-A-60-116415 (JP, A) JP-A-57-140 (JP, A) JP-A-3-221514 (JP JP, A) JP-A-5-70712 (JP, A) JP-A-5-86155 (JP, A) JP-A-5-148375 (JP, A) JP-A-54-47792 (JP, A) JP JP-A-50-127995 (JP, A) JP-A-48-21781 (JP, A) JP-A-62-70460 (JP, A) JP-A-50-33283 (JP, A) JP-A-62-18477 (JP, A) , A) (58) Fields studied (Int. Cl. ⁷ , DB name) C08F 283/00-283/01 B29C 43/20 C08F 2/44 C08F 290/00-290/08 C08F 299/00-299 / 08 C08J 7/00-7/1 8 C08L 1/00-101/16 C09D 1/00-201/10

Claims (1)

(57) [Claims] 1. An oligomer having at least two or more (meth) acrylate groups or a resin thereof, or an unsaturated polyester resin in an amount of 20 to 70% by weight, and a copolymerizable ethylenically unsaturated monomer in an amount of 80 to 30% by weight. percent relative to vehicle components 100 parts by weight of from 10 to 50% by weight (ii) chlorine content, and number average
An in-mold coating composition containing 1 to 50 parts by weight of chlorinated polypropylene having a molecular weight of 5,000 to 50,000 .