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Flame retardant composition

一种组合物、阻燃性的技术，应用在改性的环氧树脂包含卤素或者磷来提供阻燃性。,可固化环氧树脂组合物,实施方式中,电层压体领域，能够解决降低韧性、增加脆性等问题

Inactive Publication Date: 2012-11-28
BLUE CUBE IP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Although materials with high glass transition temperatures are available, these materials often exhibit increased brittleness and thus reduced toughness

Method used

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  • Flame retardant composition
  • Flame retardant composition
  • Flame retardant composition

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] Various additives are commonly added to the composition during the preparation of epoxy-containing laminates to improve the flame retardancy of the resulting laminate. Typically, additives containing halogen or phosphorus groups are used. In a preferred embodiment, the oxazolidinone-modified epoxy resin (a) includes halogen or phosphorus to provide flame retardancy. Suitable halogen-containing additives include, for example, tetrabromodiphenol propane, or epoxy resins prepared by reacting diglycidyl ether of bisphenol-A with tetrabromodiphenol propane.

[0045] Preferred halogenated flame retardants are brominated flame retardants. Examples of halogenated flame retardants include halogenated epoxy resins (especially brominated epoxy resins), tetrabromobisphenol A (TBBA) and its derivatives, D.E.R. 542, D.E.R. 560, which are available from Dow Chemical Company, Brominated novolaks and their glycidyl ethers, TBBA epoxy oligomers, and other derivatives. Examples of suit...

Embodiment 1 and comparative example A

[0106] Table 1

[0107] Raw materials for varnish compositions

Comparative example A

Example 1

Epoxy F [80% non-volatiles in MEK]

176.9

0.0

Epoxy H [70% non-volatiles in DMF]

77.0

99.6

Epoxy O [80% non-volatile in acetone]

0.0

126.0

Resin T [75% non-volatiles in MEK]

100.0

100.0

Resin B [50% non-volatiles in MEK]

100.0

100.0

Catalyst [10% non-volatiles in MEK]

0.5

0.6

MEK

33.4

33.3

[0108] Table 2

[0109] Varnish properties

Comparative example A

Example 1

Varnish gel time

290

270

%Br (relatively non-volatile matter)

17％

17％

% non-volatile matter

65.7％

64.3％

[0110] table 3

[0111] test results

Comparative example A

Example 1

color

uniform dark brown

uniform dark brown

Tg(DSC, midpoint, 20℃ / min), ℃ ...

Embodiment 2 and comparative example B

[0122] table 5

[0123] Raw materials for varnish compositions

[0124] Resin B [50% non-volatiles in MEK]

[0125] Table 6

[0126] Varnish properties

[0127] Table 7

[0128] test results

[0129] It can be seen that the examples of the present invention not only have a significantly higher glass transition temperature, but also have an increase in delamination energy and a significant improvement in thermal decomposition temperature. The increase in glass transition temperature allows the laminate to be used at higher operating temperatures. The resulting laminate was also tougher than the control as evidenced by the increase in delamination energy.

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Abstract

A curable epoxy resin composition comprising at least one oxazolidone-modified epoxy resin which is the reaction product of an epoxy resin and an isocyanate, at least one maleimide, at least one cyanate ester, and optionally at least one non-oxazolidone containing epoxy resin, wherein at least one component of the composition comprises halogen or phosphorous to provide flame retardancy to the cured composition, a method of making the composition and methods of making a prepreg and an electrical laminate using the composition.

Description

Background of the invention [0001] The present invention relates to epoxy resin compositions, and more particularly to curable epoxy resin compositions for use in electrical laminate applications, and electrical laminates prepared therefrom. [0002] It is common practice to prepare electrical laminates and other fiber reinforced composites from reinforcing fibers and a matrix resin containing epoxy resin. A typical example of a method of making such a laminate may include the following steps: [0003] (1) The epoxy-containing formulation is applied or dipped into the substrate by roll coating, dip coating, spray coating, other known techniques, and / or combinations thereof. The substrate is typically a woven or non-woven fiber mat containing eg glass fibers or paper. Epoxy resin formulations used for impregnation are commonly referred to as "varnishes". [0004] (2) "B-staged" the impregnated substrate by heating at a temperature sufficient to expel the solvent in the epoxy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/00C08G59/18C08G59/40C08L63/00C08L63/02C08L75/04C08L79/00
CPCC08J2363/02C08G18/003C08L63/00C08J5/24C08J5/244C08J5/249C08L2666/20C08K3/16C08L2201/02C08K2003/026
Inventor 瓦利特·卢多维克赫罗尔德·乌尔里克伯恩德·霍维尔
Owner BLUE CUBE IP