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PMMA film featuring particularly great weather resistance and great uv protection

一种紫外线、用途的技术，应用在紫外线和气候防护叠材领域，能够解决没有给出耐气候性等问题

Active Publication Date: 2009-01-07
ROHM G M B H
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application gives no indication of improved weather resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] Preparation of PMMA plastic

[0022] Polymethyl methacrylate plastics are usually obtained by free-radical polymerization of mixtures containing methyl methacrylate. Usually the mixture contains at least 40% by weight, preferably at least 60% by weight, particularly preferably at least 80% by weight, based on the weight of the monomers, of methyl methacrylate.

[0023] In addition to this, for the preparation of polymethyl methacrylate, the mixture may also contain further (meth)acrylates which are copolymerizable with methyl methacrylate. The term "(meth)acrylate" includes methacrylates and acrylates and mixtures of both. These monomers are largely known. Especially (meth)acrylates derived from saturated alcohols, such as methyl acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, n-butyl (meth)acrylate, tert-(meth)acrylate Butyl, isobutyl (meth)acrylate, pentyl (meth)acrylate and 2-ethylhexyl (meth)acrylate; also (meth)acrylates derived from unsaturated alcohols,...

Embodiment 1

[0100] Use a PMMA membrane with a thickness of 56 μm formed from:

[0101] a) 89.8% by mass of a polymer made of a two-phase impact modifier according to EP 0 528 196, note [AN 2]: I have to also check with Dr. Goldacker, the total composition is:

[0102] 59.9% by mass of MMA

[0103] 37.1% by mass of butyl acrylate

[0104] 0.36% by mass of ethyl acrylate

[0105] 0.66% by mass of allyl methacrylate

[0106] 1.95% by mass of 3-(2-Benztriazololyl) 2-hydroxy-5-tert-octylbenzyl methacrylate, a homopolymerizable ultraviolet absorber.

[0107] 0.53% by mass of dodecylmercaptan, based on the above monomers

[0108] b) 10% by mass 7H, by GmbH gets,

[0109] c) 0.2% by mass of Tinuvin 360 (ultraviolet absorber based on benzotriazole of Ciba SC company)z

[0110] The mixture is extruded into a film by conventional methods.

[0111] The film was then laminated on a PVC-decor film (brown wood trim), subsequently coated on a plastic carrier and tested.

[0112] Composition o...

Embodiment 2

[0114] Example 1, except for 1.95% by mass of 3-(2-benzotriazolyl)2-hydroxy-5-tert-octylbenzyl methacrylate in the polymer + 2.3% by mass based on the film of Example 1 360. The amount of monomers in Example 1 was adjusted accordingly.

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PUM

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Abstract

The invention relates to a novel UV-protective and weather-resistant package for surface protecting films for polyvinyl chloride window profiles made of poly(meth)acrylate. Matrix plastics having great molecular weights are used in order to obtain great weather resistance of the surface protecting films.

Description

technical field [0001] The invention relates to one or more layers of plastics moldings with particularly high UV stability and high weather stability, in particular made of polymethyl(meth)acrylate (PMMA) or of PMMA and polylidene 1.1-bis A mixture of vinyl fluorides. The plastic molded body is used, for example, as a surface protection film for polyvinyl chloride window profiles. Furthermore, the invention relates to UV- and weather-protective laminates for transparent plastics, such as PMMA films, and objects equipped with such surface protection films. Background technique [0002] Polymethyl(meth)acrylates are highly weather-resistant and are therefore particularly suitable for all applications in the atmosphere-exposed environment. For this reason, PMMA films have been marketed as surface protection films for colored polyvinyl chloride (PVC) window profiles. [0003] The manufactured profiles must pass tests according to the requirements of the RAL-Quality Organizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/00C08F220/00C08J7/00
CPCC08J2327/06C08K5/3475C08J2433/00C08J7/047Y10T156/10C08J7/0427C08L33/12C08J5/18C08L33/06C08K5/00C08J7/00
Inventor U·努姆里希A·诺伊霍伊泽T·戈尔达克T·阿恩特A·拉施茨G·迪克霍特-拜尔C·克罗默尔
Owner ROHM G M B H