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Low smoke polycarbonate composition and laminates, method of manufacture and product made therefrom

A technology of polycarbonate and composition, applied in the field of polycarbonate composition, can solve the problems of difficult processing, expensive polymer, unable to provide mechanical properties of polycarbonate composition and the like

Active Publication Date: 2008-07-30
SHPP GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However these polymers are very expensive and difficult to process and do not provide the mechanical properties exhibited by polycarbonate compositions

Method used

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  • Low smoke polycarbonate composition and laminates, method of manufacture and product made therefrom
  • Low smoke polycarbonate composition and laminates, method of manufacture and product made therefrom
  • Low smoke polycarbonate composition and laminates, method of manufacture and product made therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0236] A series of compositions were prepared using the above materials as described in Tables 1A-1 and 1B. In addition to the materials in the table, each sample contained about 0.5 wt% TSAN and about 0.46 wt% other additives (antioxidants, stabilizers and mold release agents). Polycarbonate ("PC") is a combination of equal weights of PC-1 and PC-2. The samples were tested as described above and the results are shown in Tables 1A-2, 1A-2 and 1B.

[0237] Table 1A-1

[0238] components

unit

C1

C2

1

2

3

4

5

6

7

8

10

11

12

PC

(50wt%PC-1+

50wt%PC-2)

wt%

69.1

76

94.04

86.04

81.04

71.04

76.04

71.04

61.04

76.04

66.04

74.54

51.04

PC-Si

wt%

-

-

-

8

8

8

18

18

18

8

18

12

...

Embodiment 2

[0253] Several compositions were prepared and tested as described above for Example 1 . The contents of the compositions are shown in Table 2A. In addition to the components indicated, all sample compositions contained 0.2% Seenox by weight of the sample TM Stabilizer, 0.3% Irganox TM 1076 Antioxidants and 0.1% Irgaphos TM 168 Stabilizer.

[0254] Table 2A

[0255] Sample composition

components

unit

2-1

2-2

2-3

2-4

2-5

2-6

PC (50wt% PC-1+50wt

%PC-2)

wt%

78.4

76.4

73.4

76.4

74.05

67.05

PC-3

wt%

38.2

37.03

33.53

PC-Si

wt%

10

10

10

10

10

10

BPADP

wt%

1

3

6

3

3

10

PEI-2

wt%

5

5

5

5

5

5

BABS

wt%

5

5

5

5

5

5

TSAN

wt%

0

0

0

0

0.35

0.35 ...

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Abstract

A laminate contains a first layer and a second layer. The first layer contains a first composition that contains polycarbonate, polycarbonate-polysiloxane copolymer, impact modifier and polyetherimide, wherein the polycarbonate constitutes at least about 50% by weight of the composition and a 3.2 millimeter thick, 7.6 centimeter square sample of the first composition produces a smoke density (Ds) of less than 275 after a 4-minute burn, measured according to ASTM E 662-03. The first composition may contain about 50 wt. % to about 97 wt. % polycarbonate, about 0.5 wt.% to about 25 wt.% polycarbonate-polysiloxane copolymer, about 0.5 wt.% to about 20 wt.% impact modifier, and about 2 wt.% to about 15 wt.% polyetherimide, by weight. An article may contain a sheet or film made from such a composition. A laminate or article may be made to include a first layer or sheet that includes such a composition.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation-in-part of US Patent Application Serial No. 11 / 212,424, filed August 26, 2005, which is hereby incorporated by reference in its entirety. Background technique [0003] The present disclosure relates to polycarbonate compositions, in particular polycarbonate compositions including impact modifier compositions, their use in laminated articles, methods of manufacture and uses thereof. Blends of polycarbonate and impact modifier compositions are useful in many engineering applications because they exhibit a balance of moldability, heat resistance, moisture resistance, impact strength and good flame retardancy ratings. For example, polycarbonate / acrylonitrile-butadiene-styrene blends are used to make casings for desktop and laptop computers, cell phones, computer printers, and the like. However, when they burn, these blends generate so much smoke that they cannot be used in transportation a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00
CPCC08L79/08C08L69/00C08L83/10C08L55/02C08K5/0066C08K5/521C08L2666/02
Inventor 内夫恩·阿加沃尔托马斯·埃布林斯里尼瓦斯·西里普拉普
Owner SHPP GLOBAL TECH BV