EP1771512A2 - Matiere moulable de polyester, pouvant etre directement metallisee - Google Patents

Matiere moulable de polyester, pouvant etre directement metallisee

Info

Publication number
EP1771512A2
EP1771512A2 EP05766812A EP05766812A EP1771512A2 EP 1771512 A2 EP1771512 A2 EP 1771512A2 EP 05766812 A EP05766812 A EP 05766812A EP 05766812 A EP05766812 A EP 05766812A EP 1771512 A2 EP1771512 A2 EP 1771512A2
Authority
EP
European Patent Office
Prior art keywords
parts
integer
polyester
weight
naphthalate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05766812A
Other languages
German (de)
English (en)
Inventor
Roland Wursche
Hans-Günter Lohkämper
Frank Lorenz
Alexander Richter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Degussa GmbH filed Critical Degussa GmbH
Publication of EP1771512A2 publication Critical patent/EP1771512A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/10—Block- or graft-copolymers containing polysiloxane sequences

Definitions

  • the invention relates to a polyester molding composition which gives moldings with good mold release and metallizability.
  • WO 02/92688 describes the addition of a polysiloxane for this purpose.
  • a polysiloxane for this purpose.
  • Similar systems are described in JP-A 11061382 and JP-A 11241006;
  • a modified silicone oil is added to a blend of polyester and polycarbonate, the functional groups such.
  • B. contains epoxy groups, with which a connection to the polymer matrix is intended.
  • Experience has shown that such a reaction with the few polyester end groups, however, always incomplete instead, so that there are significant concentrations of low molecular weight compounds that lead to outgassing at high service temperatures with the disadvantages described above.
  • the object of the present invention was to develop a directly metallizable polyester molding composition with good adhesion of the metallization on the molding, wherein the mold release and the surface quality of the metallization should be optimized. This should be achieved while avoiding deposits in the injection mold.
  • the Aufgäbe is solved by the use of a molding composition for the production of metallizable moldings containing the following components:
  • thermoplastic polyester I. 50 to 99.98 parts by weight, preferably 80 to 99.9 parts by weight and more preferably 90 to 99.8 parts by weight of thermoplastic polyester,
  • IL 0.02 to 5 parts by weight, preferably 0.1 to 3 parts by weight and more preferably 0.2 to 2.5 parts by weight of a copolymer containing Polysiloxariblöcke and polyester blocks, preferably Polysiloxanblöcke and Polylactonblöcke,
  • Pigments, antistatic agents, reinforcing agents and stabilizers the sum of all parts by weight being 100.
  • Thermoplastic polyesters are prepared by polycondensation of diols with dicarboxylic acids or their polyester-forming derivatives such as dimethyl esters.
  • Suitable diols have the formula HO-R-OH, where R is a divalent, branched or unbranched aliphatic and / or cycloaliphatic radical having 2 to 40, preferably 2 to 12 represents C atoms.
  • Suitable dicarboxylic acids have the formula HODC-R'-COOH, where R 'is a divalent aromatic radical having 6 to 20, preferably 6 to 12, carbon atoms.
  • diols examples include ethylene glycol, trimethylene glycol, tetramethylene glycol, 2-butene-1,4-diol, hexamethylene glycol, neopentyl glycol, cyclohexanedimethanol and the C 36 -diol dimerdiol.
  • the diols can be used alone or as a diol mixture.
  • aromatic dicarboxylic acids come z.
  • terephthalic acid isophthalic acid, 1,4-, 1.5-, 2.6- or 2.7-naphthalenedicarboxylic acid, diphenic acid and diphenyl ether-4,4'-dicarboxylic acid in question.
  • Up to 30 mol% of these dicarboxylic acids can by aliphatic or cycloaliphatic dicarboxylic acids having 3 to 50 carbon atoms and preferably having 6 to 40 carbon atoms such.
  • succinic acid, adipic acid, sebacic acid, dodecanedioic acid or cyclohexane-1,4-dicarboxylic acid may be replaced.
  • thermoplastic polyester of the molding composition of the present invention can be prepared by converting cyclic oligomers of the polyester to linear polyesters in a entropically driven or catalyzed ring cure polymerization. This can be done for example in the injection molding tool in the form of a RIM process. Advantage of this procedure is that the polyester in its low molecular weight form has a very good flowability, which may be advantageous for complex components, but also for highly filled molding compositions.
  • EP-AO 699 701 and US Pat. No. 5,231,161 describe two preparation methods of the macrocycles, while EP-A-0 725 098, EP-A-0 749 999 and US Pat. No. 5,039,783 disclose the polymerization of the macrocycles into high molecular weight polyester.
  • polyesters examples include polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polyethylene-2,6-naphthalate, polypropyl-2,6-naphthalate and polybutylene-2,6-naphthalate. Of course, mixtures of different polyesters can be used.
  • polyesters The preparation of these polyesters belongs to the prior art (DE-OSS 24 07 155, 2407 156, UUmann's Encyclopedia of Industrial Chemistry, 4th ed., Vol. 19, pages 65 ff., Verlag Chemie, Weinheim, 1980).
  • the polyester can be post-condensed in an inert gas stream or under vacuum in the solid phase if required, generally at a maximum temperature of 5 K and preferably 10 K below the melting point of the melt over a period of 2 hours to 3 days ,
  • the polyester used or the optionally used polyester mixture generally has a solution viscosity J, measured according to DIN 53728 / ISO 1628 part 5 in a 0.5% strength by weight phenol / o-dichlorobenzene solution (weight ratio 1: 1) at 25 0 C, of at least 80 cmVg, preferably of at least 90 cmVg and more preferably of at least 100 cmVg.
  • the copolymer containing polysiloxane blocks and polyester blocks acts as a release agent.
  • the polyester blocks consist for example of polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polyethylene 2,6-naphthalate, polypropylene 2,6-naphthalate, polybutylene-2,6-naphthalate or a polylactone such as. B. polycaprolactone.
  • copolymer containing polysiloxane blocks and polylactone blocks usually has the formula
  • n is an integer from 1 to about 200, and preferably from 10 to about 150;
  • R 1 , R 2 , R 3 and R 4 are, independently of one another, a linear or branched alkyl radical having 1 to 6 C atoms;
  • a and A ' are, independently of one another, units of the formula
  • p is an integer from 0 to 6
  • m is an integer from 1 to about 250, and preferably from 10 to about 200;
  • R 6 is hydrogen or a linear or branched alkyl group having 1 to 6 C atoms
  • R 5 is selected from - (CH 2 ) q -O-, - (CH 2 ) q -NH-, - (CH 2 ) t -O- (CH 2 CH 2 O) v -CH 2 CH 2 O- and - (CH 2 ) t -O- (CH 2 CH 2 O) v - € H 2 CH 2 NH- .
  • R 5 ' is selected from -O- (CH 2 ) q -, -NH- (CH 2 ), -, -OCH 2 CH 2 - (OCH 2 CH 2 ) v -O- ⁇ CH 2 ) t- and
  • q is an integer from 1 to 20
  • t is an integer from 1 to 6
  • v is an integer from 1 to 100, preferably from 2 to 40.
  • Corresponding block copolymers are known from WO86 / 04072; They are commercially available for example under the bottlesnatnen Tegomer® ® H-Si6440 (Goldschmidt AG, Essen). Furthermore, the copolymers known from EP 1 211 277 A2 which contain polysiloxane blocks, polyester blocks and polyolefin blocks are also suitable.
  • the copolymer of component II contains from 1 to 99% by weight, preferably from 5 to 95% by weight, more preferably from 10 to 90% by weight and especially preferably from 15 to 85% by weight of polyester blocks and from 1 to 99% by weight.
  • -% preferably 5-95 wt .-%, particularly preferably 10-90 wt .-% and particularly preferably 15 - 85 wt .-% polysiloxane blocks.
  • polymers are, for example, impact modifiers customary for polyester, for example ethylene / ⁇ -olefin copolymers (in particular EPM and EPDM) or styrene / ethylene / butylene
  • Block copolymers especially SEBS, wherein in all these cases, the impact modifier additionally functional groups such.
  • Glycidyl methacrylate as Terkomponente, besides other polymers such as polycarbonates, (meth) acrylate homo- and copolymers, styrene-Acryhiitril copolymers,
  • ABS Acrylonitrile-butadiene-styrene copolymers
  • EP 1 217 039 A2 branched Polyester or polyamine-polyamide graft copolymers
  • Fillers and pigments are, for example, carbon black, titanium dioxide, iron oxide, glass beads, hollow glass beads, talc, zinc sulfide, silicates or carbonates, where the fillers may also be nanoscale;
  • Reinforcing agents are, for example, glass lasers, carbon fibers, aramid fibers or whiskers; Stabilizers are, for example, antioxidants, UV stabilizers or hydrolysis stabilizers;
  • Antistatic agents are, for example, quaternary ammonium compounds.
  • the molding composition may optionally contain other conventional ingredients, provided that the effect according to the invention is essentially retained, for example flame retardant, this is necessary in a specific application
  • the molding material is prepared from the individual components by conventional methods, usually by melt blending in a kneading aggregate. It can be processed into shaped parts using conventional techniques such as injection molding or extrusion. These moldings can be directly metallized by all known methods, both wet-chemically and by vacuum deposition, for example by vapor deposition, sputtering or plasma CVD processes. Eventually, prior to metallization, the polymer surface is pretreated by techniques known to those skilled in the art, such as vacuum gating. In general, chromium, nickel or, in particular, aluminum are applied as the metal, and so-called precious metals, such as, for example, palladium, are also applied. The metal layer thus obtained can then be provided with an additional layer to increase the scratch resistance, such as by painting or vacuum deposition methods that make use of, for example, silicon-containing compounds.
  • the molding can in this way either on its entire surface or even on. be metalized under a possibly smaller part of its surface.
  • Metallized in the sense of the claims therefore also means “partially metallized”.
  • the metallized moldings according to the invention are characterized by a uniformly reflecting and firmly adhering metal layer; migration of constituents resulting in turbidity, cloud formation or rainbow effects will not occur even during long-term use at high temperatures.
  • Inventive metallized molded parts are for example parts of.
  • Lighting fixtures or signal lamps of any kind or decorative elements may be headlight frames and reflectors, decorative elements as part of a headlight frame, such as trim rings or panels within headlight frame, the other frame and reflectors of indicators or taillights, or decorative elements used there.
  • a general use of these molding compounds for the production of frames and reflectors of lighting fixtures or signal lamps can be done, either in stationary operation or in other Fortschulsmittehi.
  • an advantageous use is possible in mirrors and reflectors in optical equipment or measuring devices or devices for the transmission of optical signals.
  • Polyester A A polybutylene terephthalate having a solution viscosity J of 110 ml / g according to ISO 1628-5.
  • the polyester A is produced in a two-stage process. First, a prepolymer having a solution viscosity J of 80 ml / g is produced by melt polycondensation. Thereafter, solid phase postcondensation is performed to adjust the final viscosity value.
  • Polyester B A polybutylene terephthalate having a solution viscosity J of 150 ml / g according to ISO 1628-5.
  • the polyester B is produced in a two-stage process. First, a prepolymer having a solution viscosity J of 105 ml / g is produced by melt polycondensation. Thereafter, solid phase postcondensation is performed to adjust the final viscosity value.
  • Sabic LD 2308AN00 A low-density polyethylene (PE-LD) from Sabic (former trade name: Stamylan LD)
  • Elvaloy 2715 AC A copolymer of ethene and ethyl acrylate containing 15% ethyl acrylate from DuPont
  • Tegomer H-Si 6440 A block copolymer consisting of polycaprolactone and polydimethylsiloxane from Degussa
  • Tegomer PP-Si 401 A block copolymer consisting of polypropylene, polydimethylsiloxane and polycaprolactone from Degussa
  • the preparation of the compounds was done on a Werner & Pleiderer ZSK 30 having a cylinder temperature of 250 0 C at 250 U / min.
  • the throughput was 12 kg / h.
  • the injection molding plates were metallized by the sputtering process with a system Dynamet 4V Fa. Leybold.
  • the thickness of the aluminum layer was about 55 to 60 nm.
  • the demolding pressure was measured on a Krauss-Maffei KM60 / 210A injection molding machine.
  • the melt temperature was 260 0 C.
  • a sleeve mm with an inner diameter of 35 mm and a height of 35 linear increase in wall thickness from the gate to the ground (2 mm to 3.5 mm) is made.
  • the core had a constant diameter over the height, so had no draft angles on.
  • Of the In-mold pressure could be recorded via a built-in pressure in the cavity and was in the maximum value 400 bar. After expiry of the cooling time of 20 s, the tool was opened and the sprue was removed from the mold via a hydraulically actuated scraper blade. The occurring here in the hydraulic cylinder pressure curve was recorded.
  • the adhesion of the Al coating was tested according to the following procedure.
  • a coated plate was carved in the center of the plate to about 5 cm in length parallel to the longest edge with a scalpel, so that the Al layer was cut through.
  • the plate was then placed on a fixed surface.
  • the section was glued parallel to its course with a Tesa-Fihn the width of 2 cm, so that the right and left of the section were covered the same size areas.
  • the film was pressed bubble-free with his finger. A sufficient supernatant of the Tesaband was left to grasp the film for the subsequent test.
  • the bond strength of the film was about 2 N / cm (width).
  • the film was then pulled by hand towards the scribe track at a speed of about 30 cm / s perpendicular to the surface, while the other hand held the sample on the substrate.
  • the area fraction was estimated visually on which a detachment of the coating was carried out. To pass the exam, no replacement was allowed to occur. Assessment of the surface quality
  • the assessment of the surface finish on metallized plates was carried out according to visual inspection on the basis of comparative samples.
  • the survey included optical surface defects such as cloudiness, deposits, rainbow effects.
  • Grade 1 no discernible surface defects
  • Grade 2 weak surface defects
  • Grade 3 significant surface defects
  • Grade 4 severe surface defects

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne une matière moulable, contenant les constituants suivants: I. 50 à 99,98 parties en poids de polyesters thermoplastiques, II. 0,02 à 5 parties en poids d'un copolymère contenant des blocs polysiloxane et des blocs polyester, III. 0 à 49,98 parties en poids d'autres additifs, sélectionnés parmi d'autres polymères, charges et pigments, agents antistatiques, matières de renforcement et stabilisants, la somme de toutes les parties en poids étant égale à 100. Cette matière moulable est utilisée pour produire des pièces moulées métallisées.
EP05766812A 2004-07-23 2005-07-15 Matiere moulable de polyester, pouvant etre directement metallisee Withdrawn EP1771512A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004035835A DE102004035835A1 (de) 2004-07-23 2004-07-23 Direkt metallisierbare Polyesterformmasse
PCT/EP2005/053416 WO2006010717A2 (fr) 2004-07-23 2005-07-15 Matiere moulable de polyester, pouvant etre directement metallisee

Publications (1)

Publication Number Publication Date
EP1771512A2 true EP1771512A2 (fr) 2007-04-11

Family

ID=35530842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05766812A Withdrawn EP1771512A2 (fr) 2004-07-23 2005-07-15 Matiere moulable de polyester, pouvant etre directement metallisee

Country Status (9)

Country Link
US (1) US20070185257A1 (fr)
EP (1) EP1771512A2 (fr)
JP (1) JP2008507603A (fr)
KR (1) KR20070039500A (fr)
CN (1) CN1980997A (fr)
BR (1) BRPI0512995A (fr)
DE (1) DE102004035835A1 (fr)
RU (1) RU2007106629A (fr)
WO (1) WO2006010717A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102317375B (zh) * 2008-12-17 2014-04-16 3M创新有限公司 用于注塑成型应用的热塑性有机硅基聚合物加工助剂
CN102537858B (zh) * 2010-12-27 2014-06-18 海洋王照明科技股份有限公司 灯具外壳及其制备方法
US11001705B2 (en) 2015-12-25 2021-05-11 Toyobo Co., Ltd. Polyester resin composition, light-reflector component containing same, light reflector, and method for producing polyester resin composition
JP6642701B2 (ja) 2017-02-02 2020-02-12 東洋紡株式会社 ポリエステル樹脂組成物、これを含む光反射体用部品および光反射体
CN110234706B (zh) 2017-02-02 2022-01-11 东洋纺株式会社 聚酯树脂组合物、含该聚酯树脂组合物的光反射体用部件和光反射体
CN111918924A (zh) 2018-03-26 2020-11-10 东洋纺株式会社 聚酯树脂组合物、含该聚酯树脂组合物的光反射体用部件和光反射体
EP3591003B1 (fr) * 2018-07-06 2021-05-19 SHPP Global Technologies B.V. Compositions thermoplastiques à faible constante diélectrique et rigidité élevée et article façonné associé
US20230348702A1 (en) 2020-03-24 2023-11-02 Wacker Chemie Ag Compositions which have polyester-polysiloxane copolymers

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US4663413A (en) * 1985-01-04 1987-05-05 Thoratec Laboratories Corp. Polysiloxane-polylactone block copolymers
DE3535283A1 (de) * 1985-10-03 1987-04-09 Byk Chemie Gmbh Polyestergruppenhaltige polysiloxane fuer lacke und formmassen und die verwendung hierfuer
US5191036A (en) * 1989-02-23 1993-03-02 Mitsubishi Rayon Co., Ltd. Thermoplastic resin composition
JP2986509B2 (ja) * 1989-05-26 1999-12-06 三井化学株式会社 変性ポリエステル樹脂組成物、その製造方法、およびその用途
US6165610A (en) * 1993-01-14 2000-12-26 Printpack Illinois, Inc. Metallized film comprising blend of polyester and ethylene copolymers
JP3228752B2 (ja) * 1994-04-15 2001-11-12 コウブ カーディオバスキュラー、インコーポレイテッド 生体適合性被覆製品
AU1159297A (en) * 1995-11-15 1997-06-05 Cobe Laboratories Inc. Method for controlling surface concentration of a polymer additive
JPH1161382A (ja) * 1997-08-07 1999-03-05 Mitsubishi Eng Plast Kk ポリエステル樹脂組成物からなる光反射体
JPH11241006A (ja) * 1998-02-26 1999-09-07 Mitsubishi Eng Plast Corp 光反射体
DE10117107A1 (de) * 2001-04-06 2002-10-17 Degussa Formteil mit hoher Kurzzeitwärmeformbeständigkeit
US20030096122A1 (en) * 2001-09-28 2003-05-22 Mercx Franciscus Petrus Maria Metallized polyester composition
DE10200804A1 (de) * 2002-01-11 2003-07-24 Degussa Leichtfliessende Polyester-Formmasse

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Also Published As

Publication number Publication date
CN1980997A (zh) 2007-06-13
US20070185257A1 (en) 2007-08-09
JP2008507603A (ja) 2008-03-13
WO2006010717A2 (fr) 2006-02-02
RU2007106629A (ru) 2008-09-10
DE102004035835A1 (de) 2006-03-16
WO2006010717A3 (fr) 2006-03-23
KR20070039500A (ko) 2007-04-12
BRPI0512995A (pt) 2008-04-22

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