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Composite system with high impact and thermal deformation resistance

A system and form of technology, applied in household appliances, other household appliances, chemical instruments and methods, etc., can solve problems such as high warpage

Inactive Publication Date: 2018-07-06
ROHM G M B H
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The methyl methacrylate-styrene-maleic anhydride copolymers known according to DE 44 40 219 A1 achieve a high degree of warpage in the case of lamination to PC, although they exhibit a high resistance to thermal deformation

Method used

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  • Composite system with high impact and thermal deformation resistance
  • Composite system with high impact and thermal deformation resistance
  • Composite system with high impact and thermal deformation resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0117] Preparation of polymer blend a) (for polymer blend layer a)) or comparative composition

[0118] Embodiment (the present invention)

[0119] The inventive modified PMMA (=polymer blend for polymer blend layer a)) is prepared from:

[0120] 50.00% by weight of standard PMMA (equivalent to polymer A))

[0121] 50.00% by weight of styrene-maleic anhydride (co)polymer (equivalent to polymer B)) preparation

[0122] Standard PMMA (=polymer A) consists of 96% methyl methacrylate and 4% methyl acrylate. Preparation of this PMMA based on DE 4440 219A1:

[0123]

[0124] The reactants were weighed into polyester bags, polymerized in a water bath, and then heat treated in a tempered furnace. Subsequently, the polymer is ground and devolatilized by means of an extruder.

[0125] Temperature profile for polymerization in water bath:

[0126] 24h 60℃

[0127] Temperature distribution in tempering furnace:

[0128] 6 hours at 110°C

[0129] The resulting molecular weight ...

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Abstract

The invention relates to composite systems, preferably multilayer films, with high impact resistance and thermal deformation resistance, as well as processes for their preparation and their use.

Description

technical field [0001] The invention relates to composite systems, preferably multilayer films, with high impact resistance and thermal deformation resistance, as well as processes for their preparation and their use. Background technique [0002] Composite systems, preferably multilayer films, are used for display front panels, mobile displays, for example in cellular phones, smartphones and input terminals, and in display panels. Furthermore, composite systems, preferably multilayer films, are used in automotive glazing, in automotive bodies, in gaming machines and in carports. [0003] Various embodiments of composite systems formed from various polymer types are known. Important requirements here are good impact resistance, high optical clarity and good surface hardness. Furthermore, there should be a high scratch resistance. When using composite systems, preferably multilayer films, the low warping of the multilayer films at high temperatures and high air humidity is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/30C08F222/08C08L33/12C08L35/06
CPCB32B27/302B32B27/308C08F220/14C08F222/08C08L33/12C08L25/08C08L23/12B32B27/08B32B2457/20C08L35/06C08F212/08C08F222/06B32B27/30
Inventor R·卡尔洛夫G·狄特里奇M·维克C-L·陈
Owner ROHM G M B H