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Polycarbonate compositions, articles formed therefrom, and methods of manufacture thereof

A technology of polycarbonate and composition, applied in the field of polycarbonate composition, can solve problems such as not being suitable for application

Active Publication Date: 2015-08-26
SABIC GLOBAL TECHNOLOGIEIS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polycarbonates produce smoke and heat when burned, which makes them less suitable for use in mass transportation (planes, trains and ships) as well as in buildings and construction

Method used

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  • Polycarbonate compositions, articles formed therefrom, and methods of manufacture thereof
  • Polycarbonate compositions, articles formed therefrom, and methods of manufacture thereof
  • Polycarbonate compositions, articles formed therefrom, and methods of manufacture thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 13

[0322] Examples 1 to 13 demonstrate the effect of adding various polycarbonate-siloxane copolymers and polydimethylsiloxane (PDMS) oils to PPP-BP / BPA copolymers on smoke density, clarity and haze properties. Influence. The recipes and results are shown in Table 3. figure 1 and figure 2 The results are also shown graphically in .

[0323] Comparative Examples 1 and 6 show that PPP-BP / BPA copolymers and polydimethylsiloxane / bisphenol A polycarbonate copolymers with 6 wt.% siloxane units (SiPC2) have 2 Relatively high smoke density (DS-4), measured according to ISO5659-2, far exceeds the hazard class 2 requirements for EN45545 R1 or R6 applications (DS-4<300) or R3 applications (DS-4<480). Surprisingly, when a relatively low amount of SiPC2 was added to the PPP-BP / BPA copolymer, compared with a composition containing SiPC2 but no PPP-BP / BPA (Comparative Example 6) and a composition containing PPP-BP / BPA However, the DS-4 of the compositions containing both SiPC2 and PPP-BP / B...

Embodiment 14 to 29

[0329] These examples demonstrate the effect of adding various polydimethylsiloxane / bisphenol A polycarbonate copolymers and polysiloxanes to branched polycarbonates on smoke density, transmittance, and haze properties.

Embodiment 14 to 21

[0331] Examples 14 to 21 demonstrate the addition of polydimethylsiloxane / bisphenol A with 6 wt.% siloxane units to a branched bisphenol A polycarbonate resin (PC3) terminated with cyanophenyl groups Effect of polycarbonate copolymer (SiPC2) on smoke density and other properties. The recipes and results are shown in Table 4. image 3 The results are also shown graphically in .

[0332] Table 4.

[0333]

[0334] Comparative examples 14 and 21 show that at 50kW / m 2 Branched bisphenol A polycarbonate resin (PC3) terminated with cyanophenyl groups and polydimethylsiloxane / bisphenol A polycarbonate with 6 wt.% siloxane units, measured according to ISO5659-2 Both ester copolymers (SiPC2) have relatively high DS-4 values ​​(1165 and 935 respectively), far exceeding those for EN45545 R1 or R6 applications (DS-4<300) or R3 applications (DS-4<480) HL2 requirements.

[0335] When a relatively small amount of SiPC2 was added to PC3, the DS-4 values ​​of the compositions containin...

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PUM

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Abstract

A composition comprises a first polycarbonate having a limited oxygen index of greater than 26% measured according to ISO 4589 on a 4 mm thick plaque, wherein an article molded from the first polycarbonate has a smoke density after 4 minutes (DS-4) of greater than 600 determined according to ISO 5659-2 on a 3 mm thick plaque at 50 kW / m2; and a second polymer different from the first polycarbonate, the second polymer comprising a poly(carbonate-siloxane) copolymer, a polydialkylsiloxane, or a combination comprising at least one of the foregoing; wherein an article molded from the second polymer has a smoke density after 4 minutes (DS-4) of greater than 600 determined according to ISO 5659-2 on a 3 mm thick plaque at 50 kW / m2; wherein an article molded from the composition has a smoke density after 4 minutes (DS-4) of smaller than 480 determined according to ISO 5659-2 on a 3 mm thick plaque at 50 kW / m2.

Description

technical field [0001] The present disclosure relates to polycarbonate compositions, articles formed therefrom, and methods of making them, and in particular, to low smoke density, low heat release polycarbonate compositions, articles formed therefrom, and methods of making them. Background technique [0002] Polycarbonates are used in a wide variety of applications, at least in part because of their well-balanced properties, such as formability, heat resistance, and impact properties, among others. However, polycarbonates produce smoke and heat when burned, which makes them less suitable for use in mass transportation (airplanes, trains and ships) as well as in buildings and construction. Recently, the European Union has approved the introduction of a new harmonized fire protection standard (ie EN-45545) for railway applications to replace the different standards currently in force in member states, which will be fully effective within the next two to three years. The stan...

Claims

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Application Information

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IPC IPC(8): C08L69/00
CPCC08K2003/2241C08G73/1071C08K3/0058C08G77/442C08G77/04C08L69/00C08G73/1053C08L69/005C08G77/448C08K5/49C08L2205/025C08L2205/03C08L2207/53C08L83/04C08K5/526C08K5/1345C08L79/08C08K13/06C08K3/04C08K5/523C08L51/085C08K3/016C08L83/10C08L2201/02
Inventor 保罗·迪安·西贝特马克·阿德里安乌斯·约翰内斯·范 德 梅罗兰·塞巴斯蒂安·阿辛克罗伯特·迪尔克·范 德 格兰佩尔纪尧姆·菲利普·科利特·拉韦涅
Owner SABIC GLOBAL TECHNOLOGIEIS BV
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