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Polycarbonate compositions and articles formed therefrom

A technology of polycarbonate and composition, applied in the field of polycarbonate composition and products formed therefrom

Active Publication Date: 2009-07-01
SHPP GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, only limited flame retardancy can be obtained when KSS is used alone

Method used

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  • Polycarbonate compositions and articles formed therefrom
  • Polycarbonate compositions and articles formed therefrom
  • Polycarbonate compositions and articles formed therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0190] Various amounts of flame retardant additive and polycarbonate were added together and premixed. In the following examples, the release agent is pentaerythritol tetrastearate, and the thermal stabilizer is IRGAPHOS TM 168 (tris(2,4-di-tert-butylphenyl)phosphite). Extrusion and molding were carried out under normal polycarbonate processing conditions. The flammability test was carried out using the statistical "UL Tool", in which 5 test bars of specified thickness were burned using the UL94 test procedure and the total flame-out-time was calculated. The following table shows the standards of V0, V1 and V2 under the UL94 standard.

[0191] The flammability test was carried out using the statistical "UL Tool", in which 5 test bars of specified thickness were burned using the UL94 test procedure and the total flame-out-time was calculated. The following table shows the standards of V0, V1 and V2 under the UL94 standard.

[0192] test type 94V0 94V1 94V2 ...

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PUM

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Abstract

A polycarbonate composition is disclosed having zero or minimum halogen content, while also exhibiting improved fire-retardance and / or drip-resistant characteristics. The composition comprises an effective amount of a polycarbonate, an anti-dripping agent, an aromatic sulfone sulfonate, an aromatic sulfonate, a synergistic combination of an elastomer-modified graft copolymer and a polysiloxane-polycarbonate copolymer, and an optional siloxane oligomer. The polycarbonate composition is useful for manufacture of electronic and mechanical articles, among others.

Description

Background of the invention [0001] In various exemplary embodiments, the present invention relates to polycarbonate compositions having little or no halogen content, improved flame and / or flame retardancy, and uses thereof, and articles formed therefrom. drop characteristics. [0002] Polycarbonate (PC) resins have a variety of important commercial applications due to their strength and clarity. Unfortunately, polycarbonate resins are not inherently very flame retardant, so when burning, they drip hot molten material causing nearby materials to also catch fire. Thus, in order to safely utilize polycarbonate in a variety of commercial applications, additives must be included to further prevent burning of the material and / or reduce dripping. [0003] A number of different materials have been described for the preparation of flame-retardant (FR) and / or drip-resistant polycarbonates. Examples of such materials include those described in US Patent Nos. 3,971,756; 4,028,297; 4,11...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/00
CPCC08K5/42C08L69/00C08L51/04C08L55/02C08L83/04C08L53/00C08L83/10C08K2201/014C08L2666/14C08L2666/02C08L2666/24C08L83/00C08K5/00
Inventor 陈静焦华林业刚杨敬武杨新民
Owner SHPP GLOBAL TECH BV
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