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Hardenable reaction resin system

a reaction resin and resin technology, applied in the direction of printed circuit, transportation and packaging, non-metallic protective coating application, etc., can solve the problems of inability to implement higher filler contents in systems, and achieve low linear shrinkage, low thermal expansion coefficient, and high elongation at rupture

Inactive Publication Date: 2007-08-16
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] When hardened, the reaction resin system has low linear shrinkage and is characterized by a higher elongation at rupture and a low thermal expansion coefficient.
[0007] Furthermore, the reaction resin system preferably has fused silica or silica flour particles as a filler, which results in a particularly pronounced thermal stability, a low expansion coefficient, and a low dielectric constant.
[0008] In a particularly advantageous embodiment, the reaction resin system has bisphenol A, bisphenol B, and / or bisphenol F, optionally mixed with an epoxy, as the resin component. This resin system has a high degree of cross-linking and therefore high mechanical stability when hardened.

Problems solved by technology

Higher filler contents are impossible to implement in the systems described therein, because they would have a negative effect on the viscosity, i.e., processability of the casting compound.

Method used

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Embodiment Construction

[0009] A reaction resin system according to the present invention has three basic components: a resin component A, a filler B, and polymer particles C, which are dispersed in resin component A. In addition, at least one hardener D and commonly used additives are provided such as one or more antifoaming agents, sedimentation inhibitors, or adhesion promoters.

[0010] In general, it should be kept in mind that the reaction resin system must form a stable system before and during processing to prevent the components from separating. Thus, filler particles B and polymer particles C should form stable dispersions with resin component A, and, if there are more resin components A, resin components A should form stable solutions or emulsions among themselves. This stability must be ensured during both processing and hardening of the reaction resin system.

[0011] Basically a plurality of monomers, cross-linkable compounds, or mixtures of such compounds may be used as resin component A. Partic...

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Abstract

A hardenable reaction resin system, in particular a casting compound, laminating resin, or impregnating resin, which is to be processed as a two-component compound and contains a resin component, a mineral filler, and polymer particles dispersed in the resin component. The filler includes nanoparticles.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a hardenable reaction resin system, a method for manufacturing same, as well as its use. BACKGROUND INFORMATION [0002] Systems based on a resin which hardens via a chemical reaction play a significant role in the manufacture of industrial components. When such reaction resin systems are used for insulation purposes, they usually have a high filler content. High filler contents result in a high thermal and mechanical resistance of the hardened reaction resin systems. [0003] German Patent Application No. DE 100 51 051 describes such epoxy resin-based reaction resin systems. They contain up to 75 wt. % filler. Higher filler contents are impossible to implement in the systems described therein, because they would have a negative effect on the viscosity, i.e., processability of the casting compound. [0004] An object of the present invention is to provide a hardenable reaction resin system which has a high thermal and mechanic...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08L63/00C08K3/00H05K3/28
CPCB82Y30/00C08K3/0033C08K2201/011H05K2201/0257H05K2201/0209H05K2201/0212H05K3/285C08K3/013
Inventor JENRICH, IRENELEO, KRISTIANMUZIC, MARKUSENDRES, WOLFGANGHOLST, MARCO
Owner ROBERT BOSCH GMBH
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