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Flame-resistant polycarbonate moulding compounds for extrusion applications

A molding composition, polycarbonate technology, applied in the field of polycarbonate composition, can solve the problem of weak thermal shape invariance and other problems

Inactive Publication Date: 2011-05-11
BAYER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this molding composition is characterized by weak ESC-behavior and poor thermal shape stability, especially when sufficient flame retardant is applied to achieve sufficient flame retardancy in the case of thin walls

Method used

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  • Flame-resistant polycarbonate moulding compounds for extrusion applications
  • Flame-resistant polycarbonate moulding compounds for extrusion applications
  • Flame-resistant polycarbonate moulding compounds for extrusion applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0190] Component A

[0191] The branched polycarbonate based on bisphenol A has a relative solution viscosity of 1.34 measured in dichloromethane at 25° C. and a concentration of 0.5 g / 100 ml.

[0192] Component B

[0193] 45 parts by weight of styrene and acrylonitrile in a ratio of 72:28 and 55 parts by weight of granular cross-linked polybutadiene rubber (average particle diameter d 50 = 0.3-0.4 μm) graft polymer prepared by emulsion polymerization.

[0194] Component C.1

[0195] Bisphenol-A based oligophosphate

[0196]

[0197] Component C.2

[0198] Resorcinol-based oligophosphates

[0199]

[0200] In order to determine the number-average N-values ​​of the given components C.1 and C.2, the content of oligomeric phosphate esters was first determined by HPLC measurement:

[0201] Column type: LiChrosorp RP-8

[0202] Eluent in gradient elution: acetonitrile / water 50:50-100:0

[0203] Concentration: 5mg / ml

[0204] The weight-averaged N average value...

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Abstract

The invention relates to chlorine and bromine-free, flame-resistant polycarbonate moulding compounds which are characterized by excellent flame resistance combined with good mechanical and thermal properties, good ESC characteristics and a sufficiently good melt stability for extrusion. The invention also relates to moulded parts, profiles, panels, tubes and channels which are produced from the moulding compounds.

Description

[0001] The application date is February 21, 2001, the international application number is PCT / EP01 / 01924 (the national application number is 01805912.0), and the invention title is "Flame-retardant polycarbonate molding combination for extrusion applications" The divisional application of the application for "things". technical field [0002] The present invention relates to chlorine- and bromine-free polycarbonate compositions of improved impact strength, which have high melt viscosity and melt stability and are therefore suitable for processing in extrusion processes and at the same time have excellent Flame retardancy, good ESC-behavior and mechanical properties as well as high thermal shape invariance. Background technique [0003] Chlorine- and bromine-free, flame-retardant, impact-strength-improved polycarbonate molding compositions are known. [0004] EP-A 0 345 522 (US-A 5 061 745) describes, for example, polymer mixtures of aromatic polycarbonates, ABS-graft polyme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/28C08L51/00C08L51/04C08L51/06C08L51/08C08L55/02C08K13/04C08K3/34C08K5/523C08K5/103C08J5/18B29C48/00B29C48/07B29C48/09B29C48/12C08K5/00C08K5/521C08K5/5357C08K5/5399C08L27/12C08L85/02
CPCC08K5/0066C08K5/523C08K5/5357C08K5/5399C08L27/12C08L51/04C08L55/02C08L69/00C08L85/02B29C48/00B29C48/07B29C48/09B29C48/12C08L67/00C08L2666/14C08L2666/02
Inventor A·赛德尔T·埃克尔B·凯勒D·维特曼
Owner BAYER AG
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