TW201223997A - Polycarbonate composition - Google Patents

Abstract

A polycarbonate composition comprises polycarbonate, and esters or partial esters of fatty acid and pentaerythritol. The amount of esters or partial esters of fatty acid and pentaerythritol is from 0.2 to 1.0 part by weight based on the total weight of the polycarbonate of 100 parts by weight. The esters or partial esters of fatty acid and pentaerythritol contain 1 to 10 wt% of pentaerythritol mono-fatty acid ester, 35 to 80 wt% of pentaerythritol di-fatty acid ester, 10 to 40 wt% of pentaerythritol tri-fatty acid ester, and 5 to 20 wt% of pentaerythritol tetra-fatty acid ester. The polycarbonate composition of the present invention is useful for improving the injection molding, reducing the static electricity of the moldings thus obtained, and improving the efficiency of whole process and the quality of the moldings.

Description

201223997 VI. Description of the Invention: [Technical Field] The present invention relates to a polycarbonate composition, and more particularly to a polycarbonate composition which can improve ejection fluidity and reduce electrostatic force. a Kind [Prior Art] Polycarbonate resin (P〇lyCarb〇nate, abbreviated as pc) has high resistance to impact and heat resistance, and is a general-purpose engineering, and has transparency. Steel, coupled with its high fineness and dimensional stability, can be widely used in optical lenses, optical disc substrates, electrical appliances, building materials, automobiles and other fields. In recent years, the application of polycarbonate and resin in the field of production and production has increased, and the requirements for processing characteristics have been increasing. Therefore, the industry still expects to further improve its physical properties and processing properties. For example, U.S. Patent 4,131,575 discloses a thermoplastic forming material comprising a polycarbonate which is modified to maintain its high temperature release properties by maintaining the polycarbonate resin in good mechanical properties. The thermoplastic molding material comprises a high molecular weight, thermoplastic aromatic polycarbonate composed of an aromatic dihydroxy compound, and from 0.01 to 0% by weight of a saturated fatty acid of Ci◦~c2〇 and an aliphatic quaternary to six-membered An ester composed of 4 hydric t〇6 hydric alcohols. This patent achieves excellent release properties over a wide temperature range by adding a specific fatty acid ester as a release agent. Japanese Laid-Open Patent Publication No. Hei 5-179120 proposes a 201223997 polycarbonate resin composition for improving the moldability, release property and yellowing properties of polycarbonate (less c〇i〇re(j) properties. The composition comprises 1 part by weight of thermoplastic aromatic polycarbonate resin, 0.001 to 0_05 parts by weight of C8~C22 saturated and unsaturated fatty acid, and 〇·〇〇!~〇" by weight of C8~C22 saturated and A partial esterified product of an unsaturated fatty acid and pentaerythritol. From the above, it has been known that the moldability, release property, or release property of a polycarbonate resin composition has been improved in the past, but it is neglected in a general injection molding process. The fluidity of the molten polycarbonate resin in the cavity will directly affect the quality of the molded product; in addition, the generally injection molded product (especially a molded product mainly composed of polycarbonate resin) will be molded with the mold. The surface friction generates an electrostatic force, which tends to cause the surface of the molded article to adsorb dust in the environment, and affects the quality of the molded product. Therefore, in addition to maintaining the properties of moldability and release property, how to make The polycarbonate resin has good ejection fluidity and low electrostatic force in the subsequent injection molding process. It is also a problem that the industry is currently trying to improve - [Explanation] In order to make the processing properties of polycarbonate resin more perfect At the same time, the quality of the shipment can be maintained. After the multi-party test, the inventors of the present invention learned that the esterified compound with a specific composition and mixing ratio can not only effectively lubricate the polycarbonate resin, but also make the polycarbonate resin in the subsequent injection molding process. It has a good injection fluidity and a low electrostatic force. Therefore, it is an object of the present invention to provide a resin composition suitable for injection molding, having a low electrostatic force and a high injection fluidity. The ester composition comprises a polycarbonate, and all or a part of the acetate of the fatty acid and the isobaerythrin, wherein all or part of the ester of the fatty acid and the isovaerythritol is calculated based on 100 parts by weight of the total weight of the polycarbonate 201223997 ester. The content of the compound is 0.24.0 parts by weight, and all or a part of the esterified product of the fatty acid and the isovaerythritol includes wt% of pentaerythritol. Fatty acid ester, 35 to 80 wt% of isoprenol di fatty acid ester, 1 〇 to 4 〇 wt% of isoprenol di fatty acid ester, and 5 to 2 〇 wt% of isopenic alcohol After many experiments, the inventors of the present invention have learned that the pentaerythritol mono-fatty acid ester is easy to have vaporization when it is shot because of the low amount of the product, which causes mold contamination after cooling and affects the surface appearance of the molded article; Pentaerythritol difatty acid esters help to improve the fluidity of the injection, but can not reduce the electrostatic force when used alone. When the pentaerythritol tetra-fatty acid ester is used alone, it does not improve the ejection fluidity except for improving the release property. And the effect of reducing the electrostatic force. After accumulating through the above experiments, the present invention attempts to further adjust the ratio of the content of all or part of the esterified product of the fatty acid and the isobaerythrin, so that the obtained polycarbonate composition is in the subsequent process. It has ideal injection fluidity and low electrostatic force, and the subsequent process can not only improve the overall process efficiency, but also obtain a stable quality molded product. [Embodiment] The polycarbonate composition of the present invention comprises a polycarbonate, and all or a part of an esterified product of a fatty acid and isobaric alcohol; wherein the fatty acid and the isoprene are calculated based on 100 parts by weight of the total weight of the polycarbonate. The content of all or a part of the esterified product of the tetraol is 0.2 to 1. 〇 by weight, and all or the known compound of the fatty acid and the isovadiol includes 1 to 10 wt% of the isoprene mono-fatty acid ester, 35 ～8〇wt% of isopentanol difatty acid ester, 1〇~4〇% of isoprenol triglyceride and 5~20 wt% of isopenicol tetra-fatty acid ester. 201223997 The term "all or part of the esterified product of fatty acid and pentaerythritol" refers to the product of esterification of fatty acid with pentaerythritol, including pentaerythritol mono-fatty acid, pentaerythritol di-fatty acid ester. , pentaerythritol tri-fatty acid ester and isodecyl alcohol tetra-fatty acid ester. All or part of the esterified product of the fatty acid and pentaerythritol is mainly used as a slip agent of the name polysulfonate Sa, and can also effectively reduce the electrostatic force when the content of all or part of the esterified product of the fatty acid and the pentaerythritol is lower than 0.2 parts by weight, the electrostatic force is high and the injection fluidity cannot be improved; when the content of all or part of the esterified product of the fatty acid and pentaerythritol is more than 1 part by weight, the polycarbonate composition causes the extruder to slip. 'And can't be forced out. Preferably, the content of all or a portion of the esterified product of the fatty acid and the pentaerythritol is from 〇2 to 〇8 parts by weight. Preferably, all or part of the esterified product of the fatty acid and pentaerythritol comprises 8 wt/❶ of isopentaerythritol mono-fatty acid vinegar, 4〇~78 wt% of isopentenyl alcohol in January, 12 to 36 wt% of isopententriol trifatty acid ester and 7 to 2 wt% of pentaerythritol tetra-fatty acid ester. Preferably, the '5-decline fatty acid is a C8~C22 saturated or unsaturated fatty acid. Still preferably, the fatty acid is a Ci2~ saturated or unsaturated fatty acid. More preferably, the fatty acid is selected from the group consisting of octadecanoic acid or hexadecanoic acid. All or a part of the esterified fatty acid and isoamyl alcohol may be prepared by using any known hydrazine, or may be directly used as a commercial product; and the ratio of the various amounts of the various esterified products may be within the scope defined by the present invention. Use a commercial vendor. . Mix and match. Commercially available products such as pETS (purchased from the company, containing 10 wt% of isobaerythrin tri-fatty acid ester and 9 wt% of isopenta tetra 201223997 alcohol tetra-fatty acid ester, wherein the fatty acid is mainly eighteen A mixture of acid and hexadecanoic acid, other suppliers include Cognis, Faci, Corning, etc., 7806 (purchased from Patek Precision Chemicals, containing 8 wt% of pentaerythritol mono-fatty acid ester, 49 wt% Isopentanic acid difatty acid ester, 38 wt% of isopententriol trifatty acid ester and 5 wt% of isobaerythrin tetra-fatty acid ester, wherein the fatty acid is mainly a mixture of octadecanoic acid and palmitic acid) , 7402 (purchased from Patek Precision Chemical Company, the main component is isovaerythritol di-fatty acid ester) and so on. The polycarbonate may be any known homopolycarbonates or copolycarbonates, and may be prepared according to any known method. The polycarbonate may be, for example but not limited to, an aromatic polycarbonate produced by interfacial polymerization of a di-based compound and phosgene, or an aromatic produced by melt polymerization of a dihydroxy compound and a carbonate bond-forming compound. Polycarbonate. The dihydroxy compound is preferably a bisphenol such as, but not limited to, the following: dihydroxydiphenyls, bis-(hydroxyphenyl)-alkanes, double- Bis-(hydroxyphenyl)-cycloalkanes, bis-(hydroxyphenyl)-sulphides, bis-(phenyl)-stone (bis-( Hydroxyphenyl)-sulphones ), bis-(hydroxyphenyl)-sulphoxides, bis-(hydroxyphenyl)-ethers, bis-(benzene) Bis-(hydroxyphenyl)-ketones, alkyl-cyclohexyliene-bisphenols, para-(hydroxyphenyl)-diisopropylbenzene (para-(hydroxyphenyl)- Diisopropyl-benzenes), and nuclear-alkylated and nuclear-halogenated derivatives and mixtures of the aforementioned 201223997 compounds.

The aforementioned dihydroxy compound may be, for example but not limited to, the following specific examples: 4,4'-di-biphenyldiphenyl, 2,2'-bis-(4-phenyl)- 2,2'-bis-(4-hydroxyphenyl)-propane, 2,4'-bis-(4-phenyl)-2-methylbutane (2,4,-bis-(4) -hydroxyphenyl)-2-methylbutane), 1, bis-bis-(4-hydroxyphenyl)-cyclohexane, α,α'-bis- (4 - phenyl)-diisopropyl (a, a, -bis-(4-hydroxyphenyl)-p-diisopropylbenzene) 2,2-indole-(3-mercapto-4-hydroxyphenyl)-propane ( 2,2-bis-(3-methyl-4-hydroxyphenyl)-propane) ' 2,2-bis-(3-A-4-phenyl-phenyl)-propan (2,2-bis-(3-chloro) -4-hydroxyphenyl)-propane), bis-(3,5-didecyl-4-phenyl)-bis (3,5-dimethyl-4-hydroxyphenyl)-port 1*(^31 ^), 2,2-bis-(3,5-diamidino-4-hydroxyphenyl)-propane (2,2-(3,5-(^!1161:11丫1-4-11丫( 11'0 fork 丫卩]1611丫1)-port 1'0卩3116), bis-(3,5-dimethyl-4-phenyl)-stone (bis-(3,5-dimethyl-) 4-hydroxyphenyl)-sulphone), 2,4-bis-(3,5-dimethyl-4-hydroxyphenyl)-2-methylbutane (2,4-1^-(3,5-(1丨11^丫1-4-hydroxyphenyl)-2-methylbutane), 1,1-bis-(3,5-dimethyl-4- Phenyl)-cyclohexene (1,1-1318-(3,5-£11〇161; 11丫1-4-11丫(11'〇\丫卩11611丫1)-〇>^1〇 1^\3116), 〇1, 〇1-bis-(3,5-dimercapto-4-phenyl)-p-diisopropylbenzene (a, a-bis-(3,5-dimethyl) -4-hydroxyphenyl)-p-diisopropyl-benzene), 2,2-bis-(3,5-dioxa-4-hydroxyphenyl)-propane (2,2-bis-(3,5-dichloro-4) -hydroxyphenyl)-propane), 2,2-bis-(3,5-diox-4-phenyl)-propan (2,2-bis-(3,5-dibromo-4-hydroxyphenyl)-propane ) 201223997 and so on. The dihydroxy compound can also be a compound of formula (i).

Ch3 hoh2c--ch3 The aforementioned carbonate bond forming compound may preferably be a compound of the formula (II).

Ar1 (II)

Wherein each of Ar1 and Ar2 represents a phenyl group or a naphthyl group, and optionally has at least one substituent selected from the group consisting of a gas, an alkyl group, a methoxycarbonyl group or an ethoxycarbonyl group. The carbonate bond forming compound may be, for example but not limited to, the following specific examples: diphenyl carbonate, diphenylyl carbonate, bis(2-phenylphenyl) carbonate (bis(2) -chlorophenyl)carbonate), etc., preferably diphenyl carbonate. The molecular weight of the polycarbonate is also adjusted according to the subsequent application. Preferably, the polycarbonate has a weight average molecular weight measured by gel permeation chromatography (GPC) ranging from 5,000 to 100,000; preferably from 7,000 to 50,000. More preferably 10,000~35,000. The polycarbonate selected for use in the examples of the present invention is derived from bisphenol-A (i.e., 2,2'-bis-(4-hydroxyphenyl)-propanone) as described above in the dihydroxy compound. The diphenyl carbonate in the carbonate bond forming compound is polymerized by a transesterification (melt method) reaction. Its product 10 201223997 can be sold, for example, as PC-110 (available from Chi Mei Company, which contains 1 part by weight of polycarbonate and 0.05 part by weight of a slipper PETS). The polycarbonate composition obtained by the present invention can be processed into various types of products, such as injection molding, by various processing methods depending on the subsequent application. The invention will be further illustrated by the following examples, but it should be understood that the examples are for illustrative purposes only, and m should not be construed as limiting the practice of the invention. I Chemicals】 1. Polycarbonate s: Chi Mei's product, trade name PC11 (), by bisphenol-A and diphenyl phthalate (diphenyicarb〇nate) by transesterification (melting method) The polymerized polycarbonate has a molecular weight of about 26,000. It contains 100 parts by weight of polycarbonate & parts by weight of a slip agent (PETS) composed of 1% by weight of isobaerythritol tri-fatty acid vinegar and 90% by weight of isopenic alcohol tetra-fatty acid ester. . 2. Some or all of the fatty acids and pentaerythritol: Commercially available products PETS, 7806 and 7402, respectively.

[Physical test J 1 · Electrostatic force. At 280 C, test a test piece with a length of 100 mm 'width 1 〇〇 coffee, thickness 3 _, and immediately test the electrostatic force with SIMC〇's FMX 〇〇W, the unit is kV . The lower the electrostatic force value, the better. 2. Spiral flow length (spiraI fl〇w): $ carbonate composition (10). c Lower's injection using a spiral flow mold with a runner thickness of i mm and measuring the length of the polycarbonate composition in the spiral flow mold in centimeters. The longer the spiral flow, the better the injection fluidity. 201223997 &lt;Example 1&gt; 100 parts by weight of polycarbonate (Chi Mei Industrial Co., Ltd., trade name pc_110) was mixed with 0.25 parts by weight of a mixture of isobaric acid fatty acid ester 78〇6, and then used as a biaxial extruder. The granulation was carried out to obtain the polycarbonate composition of the present invention, and was evaluated in accordance with the above-mentioned electrostatic force and spiral flow length physical property test method. Among them, all or part of the ester content of the fatty acid and pentaerythritol listed in Table 1 is calculated by the total weight of all or part of the esterified product of the fatty acid and pentaerythritol being 100 wt%. <Examples 2 to 5 and Comparative Examples 1 to 5 &gt; The preparation processes, preparation conditions, and test procedures of Examples 2 to 5 were the same as those of Example 1, in terms of parts by weight of the components of the polycarbonate composition, It is changed according to the weight parts listed in Table 1. Similarly, the test results of electrostatic force and spiral flow length are summarized in Table 1. The preparation process, preparation conditions and test procedure of Comparative Examples 1 to 5 were the same as in Example 1, except that the addition amount of all or a part of the esterified product of the fatty acid of the comparative example i and isomatetraol was less than 2 parts by weight. In Example 5, all or part of the esterified product of montmorillonic acid and pentaerythritol was added in an amount greater than 1 〇, and Comparative Examples 2 and 3 did not contain each of the esterified products, and Comparative Example 4 was prepared with the isopentenyl alcohol. The acid ester content is too small, and the pentaerythritol tetra-fatty acid ester content is excessive. The parts by weight of the components of Comparative Examples 1 to 5 were changed in accordance with the parts by weight listed in Table 1. Similarly, the test results of electrostatic force and spiral flow length are summarized in Table 1. 12 201223997

Comparative Example 5 100 0.05 0.1 0.4 0.6 | 1.15 I 2.8 69.2 14.5 13.5 Unable to test Untestable Comparative Example 4 100 0.05 0.2 0.3 0 [0.55 I 4.4 26.7 25.3 43.6 6.0 18.4 Comparative Example 3 100 0.05 0 0 0.5 | 0.55 I 0.0 90.9 0.9 8.2 LD 26.1 I Comparative Example 2 100 0.05 0.5 0 0 10.55 I 0.0 0.0 10.0 90.0 Bra KD 16.3 Comparative Example 1 100 0.05 0 0.1 0 L—0.15 I 5.3 32.7 28.7 33.3 15.3 Example 5 100 0.05 0 0.25 0.5 L〇 .8 J 2.5 77.8 12.5 7.2 4.1 23.2 Example 4 100 0.05 0 0.3 0.2 1 0.55 1 4.4 63.1 21.6 10.9 00 rri 19.5 Example 3 100 0.05 0 0.5 0 1 〇·55 1 7.3 44.5 35.5 12.7 KD ΓΟ 18.5 Example 2 100 0.05 0 0.1 0.15 ΓΟ d 2.7 66.3 14.3 16.7 r^ rn 18.8 Example 1 100 0.05 0 0.25 0 1 0.3 1 6.7 40.8 33.3 19.2 4.1 00 tH PC-110 (parts by weight) containing PETS (parts by weight) plus PETS ( Parts by weight 7806 (parts by weight) 7402 parts by weight Total content of esterified product (parts by weight) Mono-fatty acid ester (wt%) Di-fatty acid ester (wt%) Tri-fatty acid ester (wt%) Tetra-fatty acid ester ( Wt%) &gt; , _〆t 卜 ffjl fpB» Qin S piral flow (cm) 13 201223997 From the table It can be seen that in the comparative example, the addition amount of all or part of the esterified product of fatty acid and pentaerythritol is less (〇15 parts by weight), and the content of pentaerythritol tetra-fatty acid is higher (33.3%), so that The electrostatic force value is high and the spiral flow length is short. In Comparative Example 5, the addition amount of all or part of the fatty acid and the pentaerythritol is too large (115 parts by weight), so that it cannot be extruded, and thus cannot be performed. Follow-up testing.

The proportion of the component in Comparative Example 2 is a conventional slip formulation, and only the weight of the PETS is added, so that the pentaerythritol mono-fatty acid g and the isoindolinol di-fatty acid ester are not contained, and the pentaerythritol is used. The content of the tetra-fatty acid ester is as high as 9〇〇%, resulting in a higher electrostatic force value and a shorter spiral flow length. In Comparative Example 3, the content of pentaerythritol di-fatty acid ester was as high as 90.9%, resulting in a higher electrostatic force value, but the spiral flow length was greatly improved, so it is speculated that the isopentenol di-fatty acid cool helps to improve the injection. fluidity. In Comparative Example 4, the content of the pentaerythritol difatty acid ester was only Μ?%, and the spiral flow length was shorter than that of Comparative Example 3, which was in agreement with the above-mentioned results. Comparative Example 4 had a higher content of pentaerythritol tetra-fatty acid ester than Comparative Example 3, and static electricity.

Since the force value is slightly lowered, it is presumed that the combination of isopentenol di-fatty acid and isobaric acid tetra-fatty acid ester contributes to lowering the electrostatic force value of the polycarbonate composition. In Examples 1 to 5, the addition amount of all or a part of the acetate of the fatty acid and the isobaerythrin is controlled between G. 2 and 1. G parts by weight, and the content of the pentaerythritol single fatty acid vinegar is adjusted to be 2.5~. The content of 7.3 wt%, pentaerythritol di-fatty acid ester ranges from 40.8 to 77_8 wt%, the content of pentaerythritol tri-fatty acid vinegar ranges from 12.5 to 35.5 wt%, and the content of pentaerythritol tetra-fatty acid ester Range 14 201223997 is 7.2 to 19.2 wt% 'After testing' is confirmed to obtain lower electrostatic force (3.6 to 4.1 kV) and good injection fluidity (spiral flow length range of 18 to 23.2 cm). Among them, the higher the content of the pentaerythritol difatty acid ester, the longer the spiral flow length, which is in line with the presumption that the above-mentioned pentaerythritol di-fatty acid ester contributes to the improvement of the injection fluidity. The use of isoprenol di fatty acid ester and isoamyl alcohol tetra-fatty acid ester can effectively reduce the electrostatic force value. In summary, the polycarbonate composition of the present invention not only allows the polycarbonate composition to have a polycarbonate composition by adding all or a part of the esterified product of a fatty acid and a pentaerythritol having a lubricating effect, and appropriately controlling the ratio of the component to the component. The ideal injection molding property, while reducing its electrostatic force, and the subsequent production of a polycarbonate molded article of good quality. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. [Simple description of the diagram] None 15 201223997 [Description of main component symbols] Benefits &lt; »»,

16

Claims (1)

201223997 VII. Patent application scope: 1 · A polycarbonate composition containing polycarbonate, and all or part of the esterified product of fatty acid and pentaerythritol; wherein 'calculated by the total weight of the polycarbonate is 100 parts by weight' The content of all or a portion of the esterified product of the fatty acid and pentaerythritol is 0.2 to 1 · 〇 by weight, and all or part of the esterified product of the fatty acid and the isovaerythritol includes 1 to 10 wt % of isopenic tetraol Fatty acid vinegar, 35-80 wt% of pentaerythritol di-fatty acid ester, 1 〇 40 40% of isobaric acid tri-fatty acid ester and 5 to 20 wt% of pentaerythritol tetra-fatty acid vinegar. 2. The polycarbonate composition according to claim 1, wherein the content of all or a portion of the esterified product of the fatty acid and the pentaerythritol is 〇·2 to 0.8 parts by weight. 3. The polycarbonate composition according to claim 1, wherein 'all or part of the esterified product of the fatty acid and pentaerythritol comprises 2 to 8% of isopentenol mono-fatty acid ester, 4 〇 ~78 wt% of isoamyl alcohol February fatty acid vinegar, 12~36 wt% of isopententriol trifatty acid ester and 7~20 wt% of isopentenol tetra-fatty acid ester. 4. The polycarbonate composition according to claim 1, wherein the oxime fatty acid is a C8 to C22 saturated or unsaturated fatty acid. 5. The polycarbonate composition according to item 4 of the patent application, wherein the solid is an unsaturated or unsaturated fatty acid of C | 2 to C20. 17 201223997 IV. Designated representative map: (1) The representative representative of the case is: None. (2) A brief description of the symbol of the representative figure: None 5. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: