JPH08176360A - Polypropylene resin composition - Google Patents

Abstract

PURPOSE: To obtain a polypropylene resin composition comprising a specific propylene polymer and a specific fatty acid amide, hardly generating odor and excellent in heat resistance and sliding property. CONSTITUTION: This composition comprises (A) 100 pts.wt. propylene polymer having 0.01-1000g/10min melt flow rate(MFR) measured according to ASTM D-1238, in which the heat of fusion (ΔHm) obtained from measurement of differential scanning calorimeter(DSC) and the MFR satisfy formula I and (B) 0.01-1 pt.wt. N-substituted type fatty acid amide of formula II (R<1> and R<2> are each an 11-21C alkyl or an alkenyl) (preferably N-stearyl erucic acid amide). The component A is preferably obtained by polymerizing propylene using a catalyst obtained by bringing a solid component consisting essentially of Mg, Ti, a halogen and an electron donating compound into contact with an olefin in the presence of an organoaluminum compound and an organosilicon compound of formula III (R<3> is an N-containing heterocyclic substituent group, etc.; R<4> is a 1-10C hydrocarbon, etc.; R<5> is CH3 , etc.) and combining the resultant catalyst component with an organometallic compound.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polypropylene resin composition, and more particularly to a polypropylene resin composition having little odor and excellent heat resistance and slipperiness.

[0002]

BACKGROUND OF THE INVENTION Polypropylene resin is excellent in heat resistance, chemical resistance and electrical properties, and is also excellent in rigidity, tensile strength, transparency and workability. Conventionally, it has been widely used in molding methods such as film molding, sheet molding and blow molding. However, when the polypropylene resin composition is used for molded articles such as food containers, medical instruments and laboratory instruments for physics and chemistry,
The heat resistance was not sufficient. Further, since the slipperiness is poor, there is a problem that the mold releasability from the mold is poor when injection molding is performed.

Regarding the improvement of heat resistance, a titanium-containing solid component containing titanium, magnesium, halogen and an electron donor, a component obtained by combining an organoaluminum compound and an electron donor, a Si--O--C bond and / or A method of polymerizing propylene using a catalyst in combination with an organosilicon compound having a mercapto group to give a crystalline polypropylene resin and imparting heat resistance to the polypropylene resin itself has been disclosed (for example, JP 61-209207, -104810, and -1
04811, -104812, -104813
No. 3,111,106, and No. 318011,
JP-A-2-166104). In addition to the above method, a method of adding a phosphate compound to a polypropylene resin is disclosed (for example, JP-A-62-20).
No. 9151, No. 243635, JP-A-63-371.
No. 48, No. 210152, No. 243150, No. 284242, JP-A-2-49047, No. -10.
2242). However, these techniques alone are not sufficient in terms of slipperiness and heat resistance.

Regarding improvement of lubricity, fatty acid monoamides such as silicone oil, stearic acid amide, oleic acid amide, and erucic acid amide have been conventionally added to propylene resins as lubricants. Further, N-dodecyl erucic acid amide, N-dodecyl oleic acid amide, N-octadecyl erucic acid amide, N-oleyl behenic acid amide, N-octadecyl benzoic acid amide, N, N-dioleyl erucic acid amide, N, N-dicarboxylic acid A method of adding an N-substituted fatty acid amide such as octadecylbehenic acid amide has also been proposed (for example, JP-A-2-185548,
JP-A-2-166141 and JP-A-4-36334). However, the effect of improving the slipperiness is not sufficient with silicone oil, and the product dependence of the slipperiness is increased. In the case of fatty acid monoamide, the odor becomes strong when added, and also in N-substituted fatty acid amide, there is a problem that the odor becomes strong when the addition amount is large. Further, the heat resistance is poor and slipperiness cannot be said to be sufficient only by these techniques.

Therefore, an object of the present invention is to provide a polypropylene resin composition which has little odor and is excellent in heat resistance and slipperiness.

[0006]

Means for Solving the Problems As a result of intensive studies by the present inventors, the above problems can be solved by blending a specific compound in a specific range with a propylene polymer having a specific property. The inventors have found out what can be done and have completed the present invention. That is, the polypropylene resin composition of the present invention has (a) a melt flow rate (MFR) of 0.01 to 1000 g measured according to ASTM D-1238.
100 parts by weight of a propylene polymer satisfying the relational expression: ΔH _m ≧ 24.50 + 1.583 log MFR, where the heat of fusion (ΔH _m ) and MFR obtained from differential scanning calorimetry (DSC) measurement are in the range of / 10 min. ,
(b) The following general formula (I):

Embedded image (Wherein R ¹ and R ² are an alkyl group or an alkenyl group having 11 to 21 carbon atoms) and 0.01 to 1 part by weight of at least one N-substituted fatty acid amide. It is characterized by

The present invention will be described in detail below. [1] Each Component of Polypropylene Resin Composition (a) Propylene Polymer (1) Physical Properties The propylene polymer used in the present invention is ASTM D-1.
Melt flow rate (MFR) measured according to 238 (230 ° C., load 2.16 kg) is 0.01 to 1000.
g / 10 min, preferably 0.1 to 100 g / 10 min, more preferably 0.1 to 50 g / 10 min, and the heat of fusion (ΔH _m determined by differential scanning calorimetry (DSC) measurement. ) Is [24.50 + 1.583 log MF
R] or more, preferably [24.55 + 1.583 log
MFR] or more. When the MFR is less than 0.01, the moldability is low, and when it exceeds 1000, the impact resistance is lowered. Also, ΔH _m is [24.50 + 1.583 log MFR]
If it is less than 1, the heat resistance is lowered.

In the present invention, ΔH _m is the heat of fusion measured while the temperature of the sample is raised to 200 ° C.
The peak between 5 ° C and 175 ° C is taken as the melting peak, and the corresponding heat quantity is divided by the sample quantity to calculate the heat of fusion (unit cal / g).

(2) Production Method The propylene polymer is not particularly limited in its production method as long as it satisfies the above physical properties, but it is preferably produced by the following method.

(I) Polymerization catalyst (A) A solid component containing magnesium, titanium, a halogen, and an electron-donating compound as essential components, (B) an organoaluminum compound, and (C) an organosilicon represented by the general formula (II). Compound and (D) optionally in the presence of an electron-donating compound,
(E) The catalyst component (hereinafter referred to as “preliminary polymerization catalyst component”) is obtained by prepolymerizing the olefin by contacting with the olefin.
) Is prepared, and an organometallic compound and, if necessary, an electron donating compound are combined therewith to obtain a propylene polymerization catalyst.

The general formula (II) of the organosilicon compound as the component (C) is as follows.

Embedded image (However, R ³ is a cyclic substituent having an ether bond or a thioether bond in the ring, an oxy group having a cyclic substituent having an ether bond in the ring, a cyclic substituent having a ketone bond in the ring, and a heterocyclic substituent having a nitrogen atom. Group, a silicon atom-containing heterocyclic substituent, or a substituent having a lactone skeleton structure, R ⁴ is a hydrocarbon group having 1 to 10 carbon atoms, R ⁶ O—,
R ⁷ Si- or R ⁸ ₃ SiO- (wherein R ⁶ is a hydrocarbon group having 3 to 10 carbon atoms, R ⁷ and R ⁸ are each a hydrocarbon group having 1 to 10 carbon atoms, R ⁵ is a methyl group or an ethyl group, x is 1 or 2, y is 0 or 1, and z is the same or different.
Is 2 or 3 and x + y + z = 4. )

(A) Solid Component Solid component (hereinafter referred to as component (A)) is magnesium,
Titanium, a halogen and an electron donating compound are essential components, and usually prepared by contacting a magnesium compound, a titanium compound and an electron donating compound (in the case where each of the above compounds does not have a halogen, a halogen containing compound). be able to.

(A) Magnesium Compound The magnesium compound is represented by the general formula MgR ⁹ R ¹⁰ . In the formula, R ⁹ and R ¹⁰ are the same or different hydrocarbon groups, OR ¹¹ groups (R ¹¹ is a hydrocarbon group) or halogen atoms. More specifically, as the hydrocarbon of R ⁹ and R ¹⁰ , an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group,
Aryl group, an aralkyl group, the OR ¹¹ group, R ¹¹ is an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group, an aryl group, an aralkyl group and examples of the halogen atom, chlorine, bromine, iodine , Fluorine and the like.

Specific examples of these compounds are shown below (however, Me: methyl, Et: ethyl, Pr: propyl,
Bu: Butyl, He: Hexyl, Oct: Octyl, P
h: phenyl, cyHe: cyclohexyl. same as below. ). _{MgMe 2, Mg (i-Pr} ) 2, MgBu 2, MgO
ct ₂ , MgEtBu, MgPh ₂ , MgcyHe ₂ ,
Mg (OEt) ₂ , Mg (OHe) ₂ , Mg (OOc
t) ₂ , Mg (OPh) ₂ , EtMgCl, HeMgC
1, i-BuMgCl, PhMgCl, PhCH ₂ Mg
Cl, BuMgBr, BuMgI, EtOMgCl, P
hOMgCl, EtOMgBr, EtOMgI, MgC
l ₂ , MgBr ₂ , MgI ₂ .

The above-mentioned magnesium compound can be prepared from metallic magnesium or other magnesium compounds when the component (A) is prepared. As an example,
Magnesium metal, halogenated hydrocarbon and general formula: X ¹ _n M (OR ¹² ) _mn (In the formula, X ¹ is a hydrogen atom, a halogen atom or a hydrocarbon group having 1 to 20 carbon atoms, M is boron, carbon,
It is an aluminum, silicon or phosphorus atom, R ¹² is a hydrocarbon group having 1 to 20 carbon atoms, m is a valence of M, and m> n ≧ 0. The method of contacting the alkoxy group-containing compound of 1) is mentioned.

X ^{1 in} the general formula of the alkoxy group-containing compound
And hydrocarbons of R ¹² include methyl (Me), ethyl (Et), propyl (Pr), i-propyl (iP).
r), butyl (Bu), i-butyl (i-Bu), hexyl (He), octyl (Oct) and other alkyl groups, cyclohexyl (cyHe), methylcyclohexyl and other cycloalkyl groups, allyl, propenyl, butenyl, etc. Alkenyl group, phenyl (Ph), tolyl, aryl group such as xylyl group, phenethyl, aralkyl such as 3-phenylpropyl, and the like. Of these, an alkyl group having 1 to 10 carbon atoms is particularly desirable.

Specific examples of the alkoxy group-containing compound include C (OEt) ₄ and C (OP) when M is carbon.
r) ₄ , C (OBu) ₄ , C (OOct) ₄ , HC (O
Me) ₃ , HC (OBu) ₃ , HC (OPh) ₃ , Me
C (OEt) ₃ , EtC (OMe) ₃ , PhC (OE
t) ₃ , CH ₂ ClC (OEt) ₃ , MeCHBrC
(OEt) ₃ , ClC (OMe) ₃ , ClC (Oi-B
u) ₃ , BrC (OEt) ₃ , MeCH (OEt) ₂ ,
CH ₂ (OMe) ₂ , CH ₂ ClCH (OEt) ₂ , C
HCl ₂ CH (OEt) ₂ , CCl ₃ CH (OE
t) ₂ , CH ₂ BrCH (OEt) ₂ , PhCH (OE
t) _{2 and the} like, and when M is silicon, Si (O
Et) ₄ , Si (OHe) ₄ , HSi (OEt) ₃ , H
Si (OPh) ₃ , MeSi (OBu) ₃ , PhSi
(OEt) ₃ , CHCl ₂ Si (OEt) ₃ , BrSi
(OEt) ₃ , ClSi (OBu) ₃ , CHCl ₂ Si
H (OEt) ₂ , CCl ₃ SiH (OEt) ₂ , Me ₃
SiOEt _{2 and the} like, and when M is boron, B (OEt) ₃ , B (OBu) ₃ , B (OH
e) ₃ , B (OPh) _{3 and the} like, and when M is aluminum, Al (OMe) ₃ , Al (OEt)
₃ , Al (OHe) ₃ , Al (OPh) _{3 and the} like. Further, when M is phosphorus, P (OMe) ₃ , P
(OEt) ₃ , P (OHe) ₃ , P (OPh) _{3 and the} like can be mentioned.

As the magnesium compound, a metal (M ') of Group II or IIIa of the periodic table represented by the general formula: MgR ⁹ R ¹⁰ .p (M'R ¹³ _q )
Complexes with organic compounds of can also be used. The metal M ′ is aluminum, zinc, calcium or the like, and R ¹³ has 1 to 1 carbon atoms.
12 alkyl groups, cycloalkyl groups or aralkyl groups. Further, q represents the valence of the metal M ′, and p is 0.
A number from 1 to 10 is shown. Specific examples of the compound represented by M′R ¹³ _q include AlMe ₃ , AlEt ₃ , and Al (i-B).
u) ₃ , AlPh ₃ , ZnMe ₂ , ZnEt ₂ , ZnB
u ₂ , ZnPh ₂ , CaEt ₂ , CaPh _{2 and the} like can be mentioned.

(B) Titanium Compound The titanium compound has a general formula: X ² _s Ti (OR ¹⁴ ) _4-s (wherein, X ² is a halogen atom and R ¹⁴ is a carbon atom having 1 to 20 carbon atoms). A divalent, trivalent and tetravalent titanium compound represented by a hydrogen group and 1 <s ≦ 4 can be used. For example, titanium trichloride, titanium tetrachloride, titanium tetrabromide, trichloroethoxy titanium, trichlorobutoxy titanium, dichlorodiethoxy titanium, dichlorodibutoxy titanium, dichlorodiphenoxy titanium, chlorotriethoxy titanium, chlorotributoxy titanium, tetrabutoxy titanium. Examples thereof include titanium. Among these, tetravalent titanium halides such as titanium tetrachloride, trichloroethoxy titanium, dichlorodibutoxy titanium and dichlorodiphenoxy titanium are preferable, and titanium tetrachloride is particularly preferable.

(C) Electron-donating compound Examples of the electron-donating compound include carboxylic acids, carboxylic acid anhydrides, carboxylic acid esters, carboxylic acid halides, alcohols, ethers, ketones, amines, and amides. , Nitriles, aldehydes, alcoholates, phosphorus bound to organic groups via carbon or oxygen,
Examples include arsenic or antimony compounds, phosphoamides, thioethers, thioesters, carbonates and the like. Of these, carboxylic acids, carboxylic acid anhydrides, carboxylic acid esters, carboxylic acid halides, alcohols and ethers are preferable.

Specific examples of the carboxylic acid include aliphatic monocarboxylic acids such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid, acrylic acid, methacrylic acid and crotonic acid, malonic acid, succinic acid, adipic acid and maleic acid. Aliphatic dicarboxylic acids such as, tartaric acid and other aliphatic oxycarboxylic acids, cyclohexene monocarboxylic acid, alicyclic carboxylic acids such as cis-1,2-cyclohexanedicarboxylic acid, benzoic acid, toluic acid, anisic acid, cinnamic acid And aromatic polycarboxylic acids such as phthalic acid, naphthalic acid, trimellitic acid, trimesic acid, and mellitic acid. As the carboxylic acid anhydride, the acid anhydrides of the above carboxylic acids can be used.

As the carboxylic acid ester, mono- or polyvalent esters of the above-mentioned carboxylic acids can be used, and specific examples thereof include butyl formate, ethyl acetate, isobutyl pivalate, ethyl acrylate, methyl methacrylate and malon. Diethyl succinate, dibutyl succinate, diisobutyl adipate, diethyl maleate, diisobutyl maleate, diethyl tartrate, diisobutyl tartrate, ethyl cyclohexanecarboxylate, methyl benzoate, ethyl benzoate, methyl p-toluate, ethyl p-anisate, Ethyl cinnamate, Monomethyl phthalate, Dibutyl phthalate, Diisobutyl phthalate, Diallyl phthalate, Diphenyl phthalate, Diethyl terephthalate, Dibutyl terephthalate, Diethyl naphthalate, Dibutyl naphthalate, Trie trimellitate Le, and the like.

As the carboxylic acid halide, the acid halides of the above carboxylic acids can be used,
Specific examples thereof include acetic acid chloride, acetic acid bromide, acetic acid iodide, propionic acid chloride, butyric acid chloride,
Butyric acid bromide, butyric acid iodide, acrylic acid chloride, acrylic acid bromide, acrylic acid iodide, methacrylic acid chloride, methacrylic acid bromide, methacrylic acid iodide, crotonic acid chloride, malonic acid chloride, malonic acid bromide, succinic acid chloride, succinic acid bromide, Adipic acid chloride, adibic acid bromide,
Maleic acid chloride, maleic acid bromide, tartaric acid chloride, tartaric acid bromide, cyclohexanecarboxylic acid chloride, cyclohexanecarboxylic acid bromide, cis-4-
Methylcyclohexenecarboxylic acid chloride, cis-4-
Methylcyclohexenecarboxylic acid bromide, benzoyl chloride, benzoyl bromide, p-toluyl chloride, p-
Examples thereof include toluic acid bromide, p-anisic acid bromide, p-anisic acid chloride, cinnamic acid bromide, phthalic acid dichloride, phthalic acid dibromide, and naphthalic acid dichloride. Further, a monoalkyl halide of a dicarboxylic acid such as adipic acid monomethyl chloride, maleic acid monoethyl chloride and phthalic acid butyl chloride can also be used.

Alcohols are represented by the general formula R ¹⁵ OH. In the general formula, R ¹⁵ is an alkyl group having 1 to 12 carbon atoms, an alkenyl group, a cycloalkyl group, an aryl group or an aralkyl group. Specific examples include methanol, propanol, isobutanol, pentanol, hexanol, cyclohexanol, benzyl alcohol, allyl alcohol, phenol, cresol, ethylphenol, n-octylphenol group and the like.

The ethers are represented by the general formula R ¹⁶ OR ¹⁷ . In the general formula, R ¹⁶ and R ¹⁷ are an alkyl group having 1 to 12 carbon atoms, an alkenyl group, a cycloalkyl group, an aryl group or an aralkyl group, which may be the same or different.
Specific examples include diethyl ether, diisopropyl ether, diisoamyl ether, di-2-ethylhexyl ether, diallyl ether, butyl allyl ether, diphenyl ether, anisole group and the like.

(D) Halogen-containing compound Examples of the halogen-containing compound include halogenated hydrocarbons, halogen-containing alcohols, silicon halide compounds having a hydrogen-silicon bond, Group IIIa, Group IVa and Va of the periodic table.
Halides of group elements (hereinafter referred to as metal halides)
Etc. can be mentioned.

The halogenated hydrocarbon has 1 to 1 carbon atoms.
Twelve saturated or unsaturated aliphatic, cycloaliphatic and aromatic hydrocarbon mono- and polyhalogen substitutes are mentioned. Specific examples of these compounds include, for aliphatic compounds, methyl chloride, methylene chloride, chloroform, iodoform, carbon tetrachloride, carbon tetraiodide, ethyl bromide, 1,2-dichloroethane, 1,2-diiodoethane, methyl. Examples include chloroform, 1,1,2-tribromoethylene, 1,1,2,2-tetrachloroethylene, pentachloroethane, hexachloroethane, hexachloropropylene, decabromobutane, chlorinated paraffin, and the like, alicyclic compounds. Include chlorocyclopropane, hexachlorocyclopentadiene, hexachlorocyclohexane, etc., and aromatic compounds include chlorobenzene, p-dichlorobenzene, hexachlorobenzene, hexabromobenzene, benzotrichloride, p-chlorobenzo. Trichlora De, and the like. These compounds may be used alone or in combination of two or more.

As the halogen-containing alcohol, one having one or two or more hydroxyl groups in one molecule, or any one or two or more hydrogen atoms other than hydroxyl groups in the polyhydric alcohol is substituted with a halogen atom. It is a compound. Examples of the halogen atom include chlorine, bromine, iodine and fluorine atoms, and a chlorine atom is particularly desirable. Examples of these compounds include 2-chloroethanol, 1-chloro-2-propanol, 5-chloro-1-pentanol, 3-chloro-1,2-propanediol, 2-chlorocyclohexanol and 4-chlorobenz. Hydrol,
Chlorobenzyl alcohol, 4-chlorocatechol, 4
-Chloro-cresol, chlorohydroquinone, chlorophenol, 6-chlorothymol, 4-chlororesorcin, 2-bromoethanol, 1-bromo-2-butanol, 2-bromo-p-cresol, 1-bromo-2-naphthol, Fluorophenol, p-iodophenol, 2,2-dichloroethanol, 1,3-dichloro-
2-propanol, 2,3-dibromo-1-propanol, 2,4-dibromophenol, 2,2,2-trichloroethanol, 2,3,4-trichlorophenol,
2,4,6-tribromophenol, 2,3,5-tribromo-2-hydroxytoluene, 2,2,2-trifluoroethanol, 2,4,6-triiodophenol, 2,4,3,6 -Tetrafluorophenol, tetrachlorobisphenol A, 2,2,3,3-tetrafluoro-1-propanol, tetrafluororesorcin, and the like.

Examples of the halogenated silicon compound having a hydrogen-silicon bond include HSiCl ₃ , H ₂ SiCl ₂ and H
_{3 SiCl, H (C 2 H} 5) SiCl 2, H (t-C 4
H ₉ ) SiCl ₂ , H (C ₆ H ₅ ) SiCl ₂ , H (C
_{H 3) 2 SiCl, H (} i-C 3 H 7) 2 SiCl, H
_{2 (C 2 H 5) SiCl} , H 2 (n-C 4 H 9) SiC
1, H ₂ (C ₆ H ₄ CH ₃ ) SiCl, H (C ₆ H ₅ ).
₂ SiCl and the like can be mentioned.

As the metal halide, B, Al, Ga,
In, Tl, Si, Ge, Sn, Pb, As, Sb, B
Examples thereof include chloride, fluoride, bromide and iodide of i, and special BCl ₃ , BBr ₃ , BI ₃ , AlCl ₃ and Al.
_{Br 3, GaCl 3, GaBr 3} , InCl 3, TlC
l ₃ , SiCl ₄ , SnCl ₄ , SbCl ₅ , SbF ₅
Etc. are suitable.

A mixture of (a) a magnesium compound, (b) a titanium compound, (c) an electron-donating compound, and optionally (d) a halogen-containing compound in the presence or absence of an inert medium. Or contact by mechanical co-milling. The contact can be performed under heating at 40 to 150 ° C. As the inert medium, saturated aliphatic hydrocarbons such as hexane, heptane and octane, saturated alicyclic hydrocarbons such as cyclopentane and cyclohexane, and aromatic hydrocarbons such as benzene, toluene and xylene can be used.

The component (A) in the present invention is disclosed in JP-A-63-
No. 264607, No. 58-198503, No. 62-1
As disclosed in Japanese Patent No. 46904 and the like, magnesium metal, halogenated hydrocarbons and the general formula X ¹ _n M (O
A method of bringing a magnesium-containing solid obtained by bringing a compound of R ¹² ) _mn (the same as the above-mentioned alkoxy group-containing compound) into contact with a halogen-containing alcohol, and then bringing it into contact with an electron-donating compound and a titanium compound (Japanese Patent Application Laid-Open Publication No. S60-18753). 63-264607), magnesium dialkoxide and a halogenated silicon compound having a hydrogen-silicon bond are brought into contact with each other, and then a titanium halide compound is brought into contact therewith, and then with an electron donating compound (if necessary, further halogen). A titanium halide compound) (JP-A-62-146904), a magnesium dialkoxide and a silicon halide compound having a hydrogen-silicon bond are brought into contact, then an electron donating compound, and then titanium. Method of contact with compound
No. 8-198503) and the like, but the most preferable method is.

The component (A) is prepared as described above, but the component (A) may be washed with the above-mentioned inert medium, if necessary, and further dried.

(B) Organoaluminum Compound Specific examples of the organoaluminum compound (hereinafter referred to as the component (B)) include trimethylaluminum, triethylaluminum, tripropylaluminum, triisopropylaluminum, tributylaluminum, triisobutylaluminum, triisobutylaluminum and triisobutylaluminum. Hexylaluminum and the like can be mentioned.

(C) Organosilicon Compound The organosilicon compound that is a component of the catalyst of the present invention (hereinafter referred to as component (C)) is represented by the above general formula (II).
In the formula, R ³ represents a cyclic substituent containing an ether or thioether bond in the ring, an oxy group of a cyclic substituent containing an ether bond in the ring, a cyclic substituent containing a ketone bond in the ring, a heterocyclic substituent containing a nitrogen atom, and silicon. An atom-containing heterocyclic substituent, a substituent having a lactone skeleton structure, R ⁴ is a hydrocarbon group having 1 to 10 carbon atoms, R ⁶ O-, R ⁷ ₃ Si-
Or R ⁸ ₃ SiO— (provided that R ⁶ is a hydrocarbon group having 3 to 10 carbon atoms, and R ⁷ and R ⁸ are each a hydrocarbon group having 1 to 10 carbon atoms); ⁵ is a methyl group or an ethyl group, x is 1 or 2, y is 0 or 1, z is 2 or 3, and x + y + z = 4. Specific examples of R ³ are shown below (each R ³ group is represented by RA, RB, ...).

[Chemical 4]

R ⁴ in the above general formula of the component (C),
Examples of the hydrocarbon group in R ⁶ , R ⁷ and R ⁸ include an alkyl group, an alkenyl group, a cycloalkyl group, a cycloalkenyl group, a cycloalkadienyl group, an aryl group and an aralkyl group. As the alkyl group, ethyl, i
-Propyl, s-butyl, t-butyl, amyl, 2-ethylhexyl, decyl group and the like, and the alkenyl group includes vinyl, allyl, propenyl, 1-hexenyl, 1-octenyl, 1-methyl-1-. Examples thereof include a pentynyl group, examples of the cycloalkyl group include a cyclopentyl group and a methylcyclohexyl group, examples of the cycloalkenyl group include a cyclopentenyl group and cyclohexenyl group, and examples of the cycloalkadienyl group include cyclopentadiene group. Examples of the aryl group include phenyl, tolyl, and a methylcyclopentadienyl group.
Examples thereof include a xylyl group and the like, and examples of the aralkyl group include a benzyl, phenethyl, 1-phenylpropyl group and the like.

Examples of the component (C) are shown below. [RA],
The symbols such as [RB] ... Correspond to the above symbols of R ³ in the general formula (II) of the component (C). [RA] ₂ Si (OMe) ₂ , [RB] (i-Pr) S
i (OMe) ₂ , [RC] (t-Bu) Si (OMe)
₂ , [RC] (Me ₃ SiO) Si (OMe) ₂ , [R
A] (i-Pr) Si (OEt) ₂ , [RA] Si (O
Me) ₃ , [RD] Si (OMe) ₃ , [RB] Si
(OEt) ₃ , [RE] MeSi (OMe) ₂ , [R
F] (i-PrO) Si (OMe) ₂ , [RG] (i-
Pr) Si (OEt) ₂ , [RH] Si (OMe) ₃ ,
[RI] Si (OEt) ₃ , [RJ] Si (OSiM
e) (OMe) ₂ , [RK] Si (OEt) ₃ , [R
L] Si (OEt) ₃ , [RM] Si (OEt) ₃ ,
[RN] Si (OEt) ₃ .

(D) Electron-donating compound Component (D) comprises an organosilicon compound (component
(Except (C)) electron-donating compounds and electron-donating compounds containing heteroatoms such as nitrogen, sulfur, oxygen and phosphorus can be used, but organosilicon compounds are preferred. The organosilicon compound is preferably one having a total of 4 alkoxy groups (which may be partially substituted with an alkyl group or an aryl group) bonded to a silicon atom. These alkyl groups and alkoxy groups may be chain-like or cyclic. Further, the alkyl group or the aryl group may be substituted with a halogen element.

Such an organosilicon compound (component (D))
Specific examples of tetramethoxysilane, tetraisobutoxysilane, tetraphenoxysilane, tetrabenzyloxysilane, methyltrimethoxysilane, methyltriethoxysilane, methyltriphenoxysilane, ethyltriethoxysilane, butyltriethoxysilane,
Butyltriphenoxysilane, vinyltriethoxysilane, allyltrimethoxysilane, dimethyldiisopropoxysilane, dimethyldiphenoxysilane, diethyldiethoxysilane, diethyldiisobutoxysilane, diethyldiphenoxysilane, dibutyldiisopropoxysilane, dibutyldibutoxysilane Silane, dibutyldiphenoxylan, diisobutyldiethoxysilane, diphenyldimethoxysilane, diphenyldibutoxysilane, dibenzyldiethoxysilane, divinyldiphenoxysilane,
Examples thereof include diallyldipropoxysilane, diphenyldiallyloxysilane, chlorophenyldiethoxysilane and the like.

Specific examples of the electron-donating compound containing a hetero atom include compounds containing a nitrogen atom:
6,6-tetramethylpiperidine, 2,6-diethylpiperidine, 2,6-diisobutyl-4-methylpiperidine, 2,2,5,5-tetramethylpyrrolidine, 3-methylpyridine, 2,6-diisobutylpyridine, 2,5
-Dimethylpiperidine, nicotinic acid amide, imidazole, benzoic acid amide, methyl nicotinate, 2-methylpyrrole, toluic acid amide, benzonitrile, acetonitrile, aniline, toluidine, triethylamine, tetramethylenediamine, tributylamine and the like, and sulfur. As a compound containing an atom, thiophenol,
Thiophene, ethyl 2-thiophenecarboxylate, methyl mercaptan, isopropyl mercaptan, diethyl thioether, diphenyl thioether, methyl benzene sulfonate, methyl sulfite and the like, and as the compound containing an oxygen atom, tetrahydrofuran, 2-methyltetrahydrofuran, 2, 2,5,5-tetraethyltetrahydrofuran, 2,2,6,6-tetramethyltetrahydropyran, dioxane, diethyl ether,
Examples thereof include diphenyl ether, anisole, acetophenone, acetone, o-tolyl-t-butyl ketone, and ethyl 2-furarate. Examples of the compound containing a phosphorus atom include triphenylphosphine, triphenylphosphite, and diethylphosphate.

Two or more kinds of these electron donating compounds (D) may be used. Further, these electron donating compounds may be added when the organoaluminum compound is used in combination with the catalyst component, or may be added after being brought into contact with the organoaluminum compound in advance.

(E) Olefin As olefins, in addition to ethylene, propylene and 1-
Α such as butene, 1-hexene, 4-methyl-1-pentene
-Olefins can be used.

(Ii) Prepolymerization In the presence of an organoaluminum compound (component (B)) and an organosilicon compound (component (C)), the solid component (component (A)) is contacted with an olefin (component (E)). By doing so, the olefin is prepolymerized. Further, it is preferable to add an electron-donating compound (component (D)) together with the component (B) and the component (C) at the time of prepolymerization, if necessary. The prepolymerization is preferably carried out in the presence of the above-mentioned inert medium. The prepolymerization is usually performed at a temperature of 100 ° C or lower, preferably -30 ° C to +.
It is carried out at a temperature of 30 ° C, more preferably -20 ° C to + 15 ° C. The polymerization method may be a batch method or a continuous method, or may be a multi-step polymerization of two or more steps. When carrying out in multiple stages, it goes without saying that the polymerization conditions can be changed.

Component (B) has a concentration of 20 to 20 in the prepolymerization system.
It is used in an amount of 500 mmol / liter, preferably 30-200 mmol / liter, and is used in an amount of 1-50000 mol, preferably 2-1000 mol, per 1 gram atom of titanium in the component (A). Ingredient (C)
Is used so that the concentration in the prepolymerization system is 5 to 1000 mmol / liter, preferably 10 to 200 mmol / liter. Ingredients (D) used as needed
Is used so that the concentration in the prepolymerization system is 1 to 100 mmol / liter, preferably 5 to 50 mmol / liter. The olefin polymer is incorporated into component (A) by prepolymerization, but the amount of polymer is 1 g of component (A).
The amount is preferably 0.1 to 200 g, particularly 0.5 to 50 g. The catalyst component of the present invention prepared as described above can be diluted or washed with the above-mentioned inert medium, but from the viewpoint of preventing storage deterioration of the catalyst component,
It is particularly desirable to wash. After washing, it may be dried if necessary. When storing the catalyst component, it is desirable to store it at a temperature as low as possible, such as -50 ° C to + 30 ° C.
In particular, a temperature range of -20 ° C to + 5 ° C is recommended.

(Iii) Main Polymerization The precatalyst component obtained as described above is combined with an organometallic compound and, if necessary, an electron donating compound, and then homopolymerized with propylene or co-polymerized with other monoolefins. By performing main polymerization such as polymerization, the heat of fusion (ΔH _m ) and MF obtained from the differential scanning calorimetry (DSC) measurement
It is possible to obtain a crystalline polypropylene whose relation with R is represented by the above relational expression.

Organometallic compounds that can be used in the main polymerization are organic compounds of metals of Groups I to III of the periodic table. As the organic metal compound, an organic compound of lithium, magnesium, calcium, zinc or aluminum can be used, and an organic aluminum compound is particularly preferable. The organoaluminum compound has a general formula: R ¹⁸ _t AlX ³ _3-t (wherein R ¹⁸ is an alkyl group or an aryl group, X ³ is a halogen atom, an alkoxy group or a hydrogen atom, and t is 1 ≦ t ≦ 3. And an alkylaluminum compound such as trialkylaluminum, dialkylaminium monohalide, monoalkylaluminum dihalide, dialkylaluminum monoalkoxide and alkylaluminum monohydride, Alternatively, a mixture or complex compound thereof is particularly preferable. The organoaluminum compound preferably has 1 to 18 carbon atoms, more preferably 2 to 6 carbon atoms.

Specifically, trialkylaluminum such as trimethylaluminum, triethylaluminum, triisobutylaluminum, etc., dialkylaluminum chloride, diethylaluminum bromide, dialkylaluminum monohalide such as diethylaluminium iodide, methylaluminum dichloride, ethylaluminum dibromide. , Monoalkyl aluminum dihalides such as ethyl aluminum diiodide, alkyl aluminum sesquihalides such as methyl aluminum sesquichloride, diethyl aluminum ethoxide,
Examples thereof include dialkyl aluminum monoalkoxides such as diethyl aluminum phenoxide and diisobutyl aluminum ethoxide, and dialkyl aluminum hydrides such as dimethyl aluminum hydride, diethyl aluminum hydride and dipropyl aluminum hydride. Among these, trialkylaluminum is preferable, and triethylaluminum and triisobutylaluminum are particularly preferable. Further, these trialkylaluminums are other organic aluminum compounds, for example, industrially easily available diethylaluminum chloride, ethylaluminum dichloride, ethylaluminum sesquichloride, diethylaluminum ethoxide, diethylaluminum hydride or a mixture or complex compound thereof. Etc. can be used together.

It is also possible to use an organic alnium compound in which two or more aluminum atoms are bound via an oxygen atom or a nitrogen atom. Examples of such compounds include

Embedded image Etc. can be illustrated.

Examples of organic compounds of metals other than aluminum include diethyl magnesium, ethyl magnesium chloride and diethyl zinc. Further, as an organic compound of aluminum and another metal, LiAl (C
_{2 H 5) 4, LiAl (} C 7 H 15) 4 and the like.
The electron-donating compound that can be optionally combined with the prepolymerization catalyst component and the organometallic compound is the electron-donating compound (c) used when adjusting the component (A) and the component (A). It is appropriately selected from the electron-donating compounds (D) that may be used in the prepolymerization. Two or more kinds of these electron donating compounds may be used. Further, these electron donating compounds may be used when the organometallic compound is used in combination with the catalyst component, or may be used after being brought into contact with the organometallic compound in advance.

The amount of the organometallic compound used with respect to the pre-catalyst component is usually 1 to 2000 gram moles, preferably 20 to 500 gram moles per 1 gram atom of titanium in the catalyst component. When an electron donating compound is used, the amount of the organometallic compound (as aluminum) is 0.1 to 40 g atom, preferably 1 to 25 g atom per mol of the electron donating compound, so that the amount of the organo metal compound is 1 to 25 g atom. Select the ratio of electron-donating compounds.

The propylene polymerization reaction may be carried out in a gas phase or a liquid phase. When the polymerization is carried out in a liquid phase, normal butane, isobutane, normal pentane, isopentane, hexane, heptane, octane, cyclohexane, benzene, toluene, It can be carried out in an inert hydrocarbon such as xylene and in a liquid monomer. The polymerization temperature is usually -8.
The temperature range is 0 ° C to + 150 ° C, particularly 40 ° C to 120 ° C. The polymerization pressure may be, for example, 1 to 60 atmospheres. Further, the molecular weight of the obtained polymer is controlled by the presence of hydrogen or other known molecular weight regulator. The polymerization reaction is carried out in a continuous or batch reaction, and the conditions may be those normally used. Also, the polymerization reaction may be carried out in one stage or in two stages.

(B) N-Substituted Fatty Acid Amide The N-substituted fatty acid amide used in the polypropylene resin composition of the present invention has the following general formula (I):

[Chemical 6] (However, R ¹ and R ² are an alkyl group or an alkenyl group having 11 to 21 carbon atoms.). Specific examples thereof include N-stearyl erucic acid amide, N-oleyl stearic acid amide, N-dodecyl stearic acid amide, N-dodecyl oleic acid amide, N-octadecyl erucic acid amide, and N, N-dioctadecyl stearic acid amide. , N-octadecyl oleic acid amide, N, N
-Dioctadecyl behenic acid amide, N-docosyl erucic acid amide, N-docosyl oleic acid amide, N-oleyl oleic acid amide, N-oleyl erucic acid amide,
N, N-Dioleyl oleic acid amide, N, N-Dioleyl erucic acid amide, N, N-Dioleyl stearic acid amide, N-Elucyl oleic acid amide, N-Elucyl erucic acid amide, N-Elucyl lauric acid Amide, N-
Examples thereof include erucylstearic acid amide, N-erucylbehenic acid amide, N-octadecylbenzoic acid amide, and N, N-dioctadecylbenzoic acid amide. Among these, N-stearyl erucic acid amide and N-oleyl stearic acid amide are particularly preferable.

The method for producing these N-substituted fatty acid amides is not particularly limited, but it is preferable to dehydrate the carboxylic acid and the aliphatic amine at 150 to 300 ° C.

(C) Other Additives The polypropylene resin composition of the present invention contains silica, alumina, talc, mica, clay, kaolin, wollastonite, zeolite, silica-alumina, calcium carbonate, water depending on its use. Aluminum oxide, titanium dioxide, zinc oxide, magnesium oxide, zirconium oxide,
Zinc sulfide, barium sulfate, calcium sulfate, calcium phosphate, magnesium phosphate, aluminum silicate, silicon nitride, glass, hydrotalcite, glass fiber,
Potassium titanate fiber, carbon fiber, carbon black,
Granular, powdery or scale-like inorganic filler such as graphite, mica ceramics fiber, metal fiber, silane-based,
Titanate-based, boron-based, aluminate-based, zirconia-based, the inorganic filler surface-treated with a zirconia aluminate-based coupling agent, wood flour, pulp, synthetic fibers,
Organic fillers such as natural fibers, phenol-based, thioether-based, phosphorus-based antioxidants, light stabilizers, clarifying agents, nucleating agents such as organic carboxylic acids or metal salts thereof, lubricants, antistatic agents, A clouding agent, an anti-blocking agent, a pigment, a heavy metal deactivator, a radical generator such as peroxide, a dispersant such as metal soaps, or a neutralizing agent may be added within a range that does not impair the object of the present invention. it can.

[2] Mixing ratio The mixing ratio of each component is (b) at least one N-substituted type represented by the general formula (I) with respect to 100 parts by weight of the propylene polymer. The fatty acid amide is 0.01 to 1 part by weight, preferably 0.1 to 0.7 part by weight. When the amount of the N-substituted fatty acid amide is less than 0.01 part by weight, the effect of improving the slipperiness is not sufficient, while when it exceeds 1 part by weight, the odor becomes strong.

[3] Method for producing polypropylene resin composition The above components of the present invention are mixed by using a Henschel mixer, a super mixer, a ribbon blender, a Banbury mixer, etc., and a conventional single screw extruder, twin screw extruder, or blender It can be obtained by melt-kneading with a lavender, a roll or the like in a temperature range of 170 to 300 ° C. Alternatively, a masterbatch in which glass fiber is added at a high concentration may be prepared in advance and this may be blended with polypropylene.

[0057]

EXAMPLES The present invention will be described in detail with reference to the following examples and comparative examples, but the present invention is not limited thereto.

Synthesis Example 1 Production of Propylene Polymer (a) -1 Preparation of Catalyst Component (A) In a 1 liter reaction vessel equipped with a reflux condenser, under a nitrogen gas atmosphere, chip-shaped metallic magnesium (purity 99.
5%, 8.3 g of average particle size 1.6 mm) and 250 ml of n-hexane were added, stirred for 1 hour at 68 ° C., metallic magnesium was taken out, and dried under reduced pressure at 65 ° C. to obtain pre-activated metallic magnesium. .

Next, 140 ml of n-butyl ether and an n-butyl ether solution of n-butyl magnesium chloride (1.
(75 mol / l) to a suspension of 0.5 ml
The temperature was maintained at 0 ° C., and a solution of 38.5 ml of n-butyl chloride dissolved in 50 ml of n-butyl ether was added dropwise over 50 minutes. After the reaction was carried out at 70 ° C for 4 hours with stirring, the reaction solution was kept at 25 ° C.

Next, HC (OC ₂ H ₅ ) ₃ was added to this reaction solution.
55.7 ml was added dropwise over 1 hour. 6 after the dropping
The reaction was carried out at 0 ° C. for 15 minutes, the reaction product solid was washed 6 times with 300 ml each of n-hexane and dried under reduced pressure at room temperature for 1 hour to recover a magnesium-containing solid.

In a 300 ml reaction vessel equipped with a reflux condenser, a stirrer and a dropping funnel, 6.3 g of magnesium-containing solid and 50 ml of n-heptane under a nitrogen gas atmosphere.
To prepare a suspension and stir at room temperature while stirring 2,2,2-
A mixed solution of 20 ml (0.02 mmol) of trichloroethanol and 11 ml of n-heptane was added from a dropping funnel to 30
The mixture was added dropwise over a period of 1 minute and further stirred at 80 ° C. for 1 hour. The solid obtained was filtered off and 100 ml of n-hexane at room temperature was added.
Was washed 4 times with 100 ml of toluene and then twice with 2 times to obtain a solid component.

40 ml of toluene was added to the above solid component, titanium tetrachloride was further added so that the volume ratio of titanium tetrachloride / toluene was 3/2, and the temperature was raised to 90 ° C. After stirring, a mixed solution of 2 ml of di-n-butyl phthalate and 5 ml of toluene was added dropwise, and then the mixture was stirred at 120 ° C. for 2 hours. The solid substance obtained was filtered off at 90 ° C.
Wash twice with ml at 90 ° C. Further, titanium tetrachloride was newly added so that the volume ratio of titanium tetrachloride / toluene was 3/2, and the mixture was stirred at 120 ° C. for 2 hours. The obtained solid substance was filtered off at 110 ° C. and washed 7 times with 100 ml of n-hexane at room temperature to obtain a catalyst component (A).

Prepolymerization (adjustment of prepolymerization catalyst components) In a 500 ml reactor equipped with a stirrer, 3.5 g of the component (A) obtained above and 300 ml of n-heptane were put in a nitrogen gas atmosphere and stirred. While cooling to 5 ° C.
Next, n-heptane solution of triethylaluminum (TEAL) (2.0 mol / liter) and 2,3,4-trimethyl-3-azacyclopentyltrimethoxysilane were added to TEAL and 2,3,4-trimethyl in the reaction system. -3-Azacyclopentyltrimethoxysilane was added so that the concentrations thereof were 100 mmol / liter and 10 mmol / liter, respectively, and the mixture was stirred for 5 minutes.

Next, after depressurizing the system, propylene gas was continuously introduced to polymerize propylene for 2.2 hours. After completion of the polymerization, propylene in the gas phase was purged with nitrogen gas, and the solid phase portion was washed with 100 ml of n-hexane three times at room temperature. Further, the solid phase portion was dried under reduced pressure at room temperature for 1 hour to prepare a prepolymerization catalyst component. As a result of measuring the amount of magnesium contained in the prepolymerization catalyst component, the prepolymerization amount was 3.0 g per 1 g of the component (A).

In a 5 liter stainless steel autoclave equipped with a main polymerization stirrer, 6 ml of a TEAL n-heptane solution (0.1 mol / liter) and n-heptane of di (1-methylbutyl) dimethoxysilane were placed in a nitrogen gas atmosphere. 6 ml of the solution (0.01 mol / l) was mixed and held for 5 minutes.

Then, a hydrogen gas of 0.
After pressurizing 1 liter and 3 liters of liquid propylene, the reaction system was heated to 70 ° C. After 64.7 mg of the prepolymerization catalyst component obtained above was charged into the reaction system, propylene was polymerized for 1 hour. After the completion of the polymerization, unreacted propylene was purged to obtain white polypropylene powder.
MFR (unit: g / 10 min), ΔH _m (unit: cal / g), flexural modulus (unit: kg / cm ² ) and heat distortion temperature of the obtained propylene polymer ((a) −1) (unit:
(° C.) measurement result and 24.50 + 1.583 log
Table 3 shows the heat of fusion (ΔH _m ') calculated by MFR. MFR is ASTM D-1238, bending elasticity
The rate is ASTM D-790 , and the heat distortion temperature is JIS K7.
207 (4.6 kg / cm ² load).
The differential scanning calorimetry (DSC) measurement is performed by DSC7 (7700 Data Status manufactured by Perkin Elmer Co., Ltd.).
n), 0.5 m which was press molded at 210 ° C. for 1 minute
About 10 mg of m-thick sheet was punched out, enclosed in an aluminum pan and kept at 230 ° C. for 10 minutes, then at 10 ° C. /
The temperature is lowered to 50 ° C. at a rate of 10 minutes, and then the temperature is raised to 200 ° C. at a rate of 10 ° C./minute. Then, ΔH _m was calculated.

Synthesis Example 2 Production Example of Propylene Polymers (a) -2 and (a) -3 except that Component (B), Component (C), polymerization temperature and polymerization time are as shown in Table 1. Prepolymerization was performed under the same conditions as in 1. Table 1 shows the results of the amount of prepolymerization per 1 g of the component (A) obtained by measuring the amount of magnesium contained in the prepolymerization catalyst component. Further, main polymerization was carried out under the same conditions as in Synthesis Example 1 except that the amounts of the electron donating compound, the organometallic compound and the hydrogen gas were changed to those shown in Table 2. MFR and ΔH of the obtained propylene polymers ((a) −2 and (a) −3)
Table 3 shows the results of measurement of _m , ΔH _m ', flexural modulus and heat distortion temperature as in Synthesis Example 1.

Comparative Synthesis Example 1 Production of Propylene Polymers (a) -4 and (a) -5 Main polymerization was carried out under the conditions shown in Table 2 without prepolymerization to obtain propylene polymers (and (a) -5) was obtained. MF of the resulting propylene polymers ((a) -4 and (a) -5)
Table 3 shows the results of measurement of R, ΔH _m , ΔH _m ′, flexural modulus and heat distortion temperature in the same manner as in Synthesis Example 1.

Table 1 Temperature Time Polymerization amount PP component (B) / concentration (mol / l) ⁽¹⁾ component (C) ⁽²⁾ (° C) (hr) (g / g) (a) -1 TEAL / 100 C-1 5 2.2 3.0 (a) −2 TIBAL / 80 C-2 0 3.0 3.1 (a) −3 TIBAL / 80 C-2 0 3.0 3.0 Note (1): TEAL: Triethylaluminum TIBAL: Triisobutylaluminum Note ( 2): C-1: 2,3,4-trimethyl-3-azacyclopentyltrimethoxysilane C-2: bis (oxacyclopent-3-yl) dimethoxysilane

Table 2 Electron-donating aluminum Hydrogen gas amount PP compound ⁽¹⁾ compound ⁽²⁾ (liter) (a) −1 DMBDMSI TEAL 0.1 (a) −2 DNPDMSI TEAL 3.2 (a) −3 NPTESI TIBAL 6.8 (a ) -4 PTMSI TIBAl 3.0 (a) -5 PTMSI TEAL 5.5 Note (1): DMBDMSI: Di (1-methylbutyl) dimethoxysilane DNPDMSI: Dineopentyldimethoxysilane NPTESI: Neopentyltriethoxysilane PTMSI: Phenyltrimethoxysilane Note (2): TEAL: triethylaluminum TIBAL: triisobutylaluminum

[0071] Table _{3 PP MFR △ H m △ H} m ' heat distortion temperature (a) -1 0.35 24.63 23.78 117 (a) -2 13.0 26.94 26.26 118 (a) -3 39.8 27.44 27.03 118 (a) -4 9.4 25.77 26.04 108 (a) −5 20.1 26.23 26.56 111

Examples 1 to 10 and Comparative Examples 1 to 9 Propylene polymers ((a) -1 to
(a) -5) 100 parts by weight, 0.05 parts by weight of phenolic antioxidant, 0.05 part by weight of phosphorus antioxidant, and 0.05 part by weight of neutralizing agent (calcium stearate) And the following additives (proportions shown in Table 4) were blended. -N-SEA: N-stearyl erucic acid amide-N-OSA: N-oleyl stearic acid amide-OA: Oleic acid amide-EA: Erucic acid amide-Si-Oil: Silicon oil

The above raw materials were mixed using a super mixer and then melt-kneaded using a 50 mmφ single screw extruder. The pellets are extruded from the die at a die outlet temperature of 230 ° C., and the obtained pellets are injection-molded by an injection molding machine at a resin temperature of 210 ° C., an injection pressure of 400 kg / cm ² and a mold temperature of 30 ° C. to produce a sheet having a thickness of 2 mm. did.

The physical properties of the obtained product were measured by the following methods. The measurement results are shown in Table 4 below. (1) Heat distortion temperature (° C) Measured according to JIS K7207 (4.6 kg / cm ² load). (2) Sliding property A sheet of 80 mm × 80 mm × 2 mm is placed on an aluminum plate, a weight of 200 g is placed on the sheet, and the sheet is pulled and moved at a speed of 50 mm / min. The tensile load at the start of movement was measured to determine the static friction coefficient. (3) Odor 20 g of a test piece of 5 mm × 5 mm × 2 mm was put in a glass container with a 100 cc stopper and left in an oven at 80 ° C. for 1 hour to prepare an evaluation sample. Further, a sample (Comparative Example 1) in which only a specified amount of a phenol-based antioxidant, a phosphorus-based antioxidant and calcium stearate was mixed with a propylene-lens homopolymer was used as a standard sample. Using two standard samples and one evaluation sample, a panel test (15 panelists) was performed, and the odor was evaluated according to the following criteria. O: 12 or more out of 15 panelists judged that the difference in odor between the evaluation sample and the standard sample was slight or odorless. Δ: 4 to 11 out of 15 panelists judged that the difference in odor between the evaluation sample and the standard sample was slight or odorless. × ... 3 or less out of 15 panelists judged that the difference in odor between the evaluation sample and the standard sample was slight or odorless.

Table 4 Example No. Example 1 Example 2 Example 3 Example 4 Example 5 Blending amount / part by weight Polypropylene (a) −1 100 100 100 100 ─ (a) −2 ─ ─ ─ -100 ( a) −3 ─ ─ ─ ─ ─ (a) −4 ─ ─ ─ ─ ─ (a) -5 ─ ─ ─ ─ ─ Fatty acid amide N-SEA 0.1 0.2 ─ ─ 0.2 N-OSA ─ ─ 0.2 0.7 ─ OA ─ ─ ─ ─ ─ EA ─ ─ ─ ─ ─ Si-Oil ─ ─ ─ ─ ─ ─ Physical properties of composition Heat deformation temperature 117 117 117 117 118 Static friction coefficient 0.60 0.50 0.50 0.30 0.48 Odor ○ ○ ○ ○ ○ Table 4 (continued) Example No . example 6 example 7 example 8 example 9 example 10 amount / weight of polypropylene (a) -1 ─ ─ ─ ─ ─ (a) -2 100 100 ─ ─ ─ (a) -3 ─ ─ 100 100 100 (a) −4 ─ ─ ─ ─ ─ (a) -5 ─ ─ ─ ─ ─ Fatty acid amide N-SEA ─ ─ 0.2 ─ ─ N-OSA 0.2 0.7 ─ 0.2 0.7 OA ─ ─ ─ ─ ─ EA ─ ─ ─ ─ ─ Si-Oil ─ ─ ─ ─ ─ Physical properties of composition Heat distortion temperature 118 118 118 118 118 Static friction coefficient 0.48 0.30 0.50 0.50 0.30 Odor ○ ○ ○ ○ ○ Table 4 (continued) Example No. Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Blend amount / part by weight Polypropylene (a ) -1 100 100 100 100 100 (a) −2 ─ ─ ─ ─ ─ ─ (a) -3 ─ ─ ─ ─ ─ ─ (a) -4 ─ ─ ─ ─ ─ (a) -5 ─ ─ ─ ─ ─ Fatty acid amide N-SEA ─ 1.2 ─ ─ ─ ─ N-OSA ─ ─ ─ ─ ─ ─ OA ─ ─ ─ 0.2 ─ EA ─ ─ ─ ─ 0.2 Si-Oil ─ ─ 0.2 ─ ─ ─ Physical properties of the composition Heat deformation temperature 117 117 117 117 117 Static friction Coefficient 0.85 0.20 0.75 0.46 0.48 Odor * ⁽¹⁾ △ ○ × × Table 4 (continued) Example No. Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 Compounding amount / weight part Polypropylene (a) −1 ─ ─ ─ ─ ─ (a) −2 ─ ─ ─ ─ (a) -3 ─ ─ ─ ─ (a) -4 100 100 ─ ─ (a) -5 ─ ─ 100 100 Fatty acid amide N-SEA 0.2 ─ 0.2 ─ N-OSA ─ 0.2 ─ 0.2 OA ─ ─ ─ ─ EA ─ ─ ─ ─ Si-Oil ─ ─ ─ ─ Physical properties of composition Thermal deformation temperature 108 108 111 111 Static friction coefficient 0.47 0.47 0.46 0.46 Odor ○ ○ ○ ○ Note (1): Standard sample

As is clear from Table 4, the polypropylene resin composition of the present invention has little odor and is excellent in slipperiness and heat resistance.

The polypropylene resin composition of the present invention is
It contains N-substituted fatty acid amide, has less odor than conventional polypropylene resin compositions containing oleic acid amide, erucic acid amide, silicone oil, etc., and is excellent in slipperiness and heat resistance, and is a food container, medical treatment. It can be widely used for various purposes such as laboratory equipment and physics and chemistry laboratory equipment.

Claims (5)

[Claims] 1. (a) The melt flow rate (MFR) measured according to ASTM D-1238 is 0.01-10.
The range is 00 g / 10 minutes, and the differential scanning calorific value (DSC)
100 parts by weight of a propylene polymer whose heat of fusion (ΔH _m ) and MFR obtained from the measurement satisfy the relational expression ΔH _m ≧ 24.50 + 1.583 log MFR,
(b) The following general formula (I): (Wherein R ¹ and R ² are an alkyl group or an alkenyl group having 11 to 21 carbon atoms) and 0.01 to 1 part by weight of at least one N-substituted fatty acid amide. Polypropylene resin composition. 2. The polypropylene resin composition according to claim 1, wherein the compounding amount of the N-substituted fatty acid amide is 0.1 to 0.7 parts by weight. 3. The polypropylene resin composition according to claim 1, wherein the N-substituted fatty acid amide is N-stearyl erucic acid amide and / or N-oleyl stearic acid amide. 4. The MFR of the propylene polymer is 0.
The polypropylene resin composition according to claim 1, wherein the polypropylene resin composition has a range of 1 to 100 g / 10 minutes. 5. The MFR of the propylene polymer is 0.
It is in the range of 1 to 50 g / 10 minutes, and ΔH _m and MFR satisfy the relational expression of ΔH _m ≧ 24.55 + 1.583 log MFR. 5. The polypropylene resin according to claim 1. Composition.