Flame retardant polycarbonate compositions, methods of manufacture thereof and articles comprising the same

A technology of polycarbonate and composition, applied in the field of flame retardant polycarbonate composition

Active Publication Date: 2015-03-18
SHPP GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the design of the circuit needs to be changed, it is an easy matter to reprogram the computer that controls the laser

Method used

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  • Flame retardant polycarbonate compositions, methods of manufacture thereof and articles comprising the same
  • Flame retardant polycarbonate compositions, methods of manufacture thereof and articles comprising the same
  • Flame retardant polycarbonate compositions, methods of manufacture thereof and articles comprising the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0200] This example was conducted following Example 2 to demonstrate the disclosed composition and method of making a flame retardant composition comprising a polycarbonate composition, a phosphazene flame retardant, and a laser direct structuring additive. Polycarbonates are high flow polycarbonate (PC2), low flow polycarbonate (PC1) and 20wt% polysiloxane-polycarbonate with MVR of 13.0-14.0g / 10min at 300°C / 1.2kg Blend of ester copolymer resin (PC3). The polycarbonate resins used in this example are shown in Tables 1a and 1b below. Molecular weights specified are weight average molecular weights determined using polycarbonate standards.

[0201] Table 1a

[0202]

[0203] Table 1b lists the ingredients used in the following examples (Example 1 and Example 2) and a brief description of these ingredients. Table 2 lists the mixing conditions in the extruder, and Table 3 lists the mixing conditions in the molding machine. Table 4 lists comparative compositions along with c...

Embodiment 2

[0228] This example was also performed to demonstrate the disclosed composition and method of making a flame retardant composition comprising a polycarbonate composition, a phosphazene flame retardant, and a laser direct structuring additive. Samples were compounded, extruded and molded according to the details provided in Tables 2 and 3 above. Compositions are provided in Table 6, while properties are provided in Table 7. Samples #6-9 each contained increased amounts of phenoxyphosphazene flame retardant. Table 6

[0229] project description

unit

Sample #6

Sample #7

Sample #8

Sample #9

100-level PCP

wt%

68.67

67.67

66.67

65.67

PCP 1300

wt%

10

10

10

10

20% PC / siloxane copolymer, PCP endcapped

wt%

10

10

10

10

Phosphite stabilizer

wt%

0.06

0.06

0.06

0.06

Hindered phenol stabilizer

wt%

0.1

0.1

0.1

0.1

metal de...

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Abstract

Disclosed herein is a flame retardant composition comprising a polycarbonate; 5 to 10 weight percent of a polysiloxane-polycarbonate copolymer; where the polysiloxane-polycarbonate copolymer comprises an amount of greater than 10 weigh percent of the polysiloxane and where the molecular weight of the polysiloxane-polycarbonate copolymer is greater than or equal to 25,000 grams per mole; 5 to 20 weight percent of a branched polycarbonate; 5 to 60 weight percent of a reinforcing filler; and 1 to 15 weight percent of a flame retarding compound. Disclosed herein too is a method comprising blending a polycarbonate; 5 to 10 weight percent of a polysiloxane-polycarbonate copolymer; 5 to 20 weight percent of a branched polycarbonate; 5 to 60 weight percent of a reinforcing filler; where the reinforcing filler is a glass fiber, a carbon fiber, a metal fiber, or a combination comprising at least one of the foregoing reinforcing fillers; and 1 to 15 weight percent of a flame retarding compound; and extruding the flame retardant composition.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 61 / 651,487, filed May 24, 2012, and US Provisional Application No. 61 / 651,481, filed May 24, 2012, the entire contents of which are hereby incorporated by reference. Background technique [0003] The present disclosure relates to flame retardant polycarbonate compositions, methods of making the same, and articles comprising the same. [0004] In electronic and electrical devices, such as notebook personal computers, electronic books, and tablet personal computers, metal body panels are replaced by materials that are lighter in weight and provide a robust combination of mechanical properties. These lighter materials result in weight savings, cost savings, and enable complex designs to be manufactured. While these lighter materials can be used to make panels with thinner section thicknesses, it is desirable to increase the stiffness of the material to prev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/22C08K5/5399C08L69/00
CPCC08L83/10C08K7/14C09K21/14C08K3/22C08L69/00C08G77/448C08K7/02C08L69/005C08K5/5399C08L67/02C08L2205/02C08L2201/02C08L2205/025C08L2205/035C08L2205/03C08L55/02C08L51/04C08L25/12C08L85/02C08K13/02C08K3/34C08K5/524C08K5/103C08K5/523C08L83/04C08L83/00C08J3/22C08K3/00C08L2666/84
Inventor 吴彤李莹林叶刚
Owner SHPP GLOBAL TECH BV
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