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Formable anti-glare polymer film

A polymer film, anti-glare technology, used in polyurea/polyurethane coatings, instruments, anti-reflection coatings, etc., to achieve the effect of good molding performance

Active Publication Date: 2021-12-28
COVESTRO DEUTSCHLAND AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Therefore, a challenge is to achieve anti-glare surfaces on polymer films that exhibit good molding properties (especially in common molding processes such as in-mold decoration processes) and are free of defects (especially at the edges of molded samples) hard coating film

Method used

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  • Formable anti-glare polymer film
  • Formable anti-glare polymer film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0152] Approximately 40.65 grams of UA122P (a difunctional urethane acrylate supplied by Shin Nakamura, Japan) was weighed into a container and 30 grams of 1-methoxy-2-propanol was added. The mixture was stirred until a homogeneous solution appeared. To this solution was added 27.18 g of PETIA (pentaerythritol triacrylate from Allnex S.à r.l) and 0.11 g of Additol TM VXL 4930 (from Allnex S.à r.l). The mixture was stirred for an additional 15 minutes to ensure a homogeneous solution, followed by the addition of 2.06 g of Irgacure TM 184 (photoinitiator from BASF SE). The theoretical crosslink density is calculated to be 1.81·10 -3 .

[0153] Apply the liquid formulation to Makrofol as described above on the roughened PMMA surface TM 908 base. The breaking elongation of this coating film was 3.9%.

Embodiment 2

[0154] Embodiment 2 (comparative example):

[0155] A membrane has been prepared as described in Example 1, but the membrane used is Makrofol TM SR253.

[0156] The breaking elongation of this coating film was 3.5%. This coating film did not exhibit antiglare properties.

Embodiment 3

[0157] Embodiment 3 (comparative example):

[0158] Approximately 27.18 grams of UA122P (urethane acrylate supplied by Shin Nakamura, Japan) was weighed into a container and 30 grams of 1-methoxy-2-propanol was added. The mixture was stirred until a homogeneous solution appeared. To this solution was added 40.65 g of PETIA (pentaerythritol triacrylate from Allnex S.à r.l) and 0.11 g of Additol TM VXL 4930 (from Allnex S.à r.l). The mixture was stirred for an additional 15 minutes to ensure a homogeneous solution, followed by the addition of 2.06 g of Irgacure TM 184 (photoinitiator from BASF SE). The theoretical crosslink density was calculated to be 2.71·10 -3 .

[0159] Apply the liquid formulation to Makrofol as described above on the roughened PMMA surface TM 908 base. The breaking elongation of this coating film was 2.9%.

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Abstract

The present invention provides a formable antiglare polymer film, wherein the thermoplastic polymer film has at least one textured surface and a coating on said textured surface, said coating can be coated with a coating composition cloth, the coating composition comprising: (a) a binder comprising at least one difunctional (meth)acrylic monomer and / or a difunctional (meth)acrylate oligomer; and (b ) crosslinking agent comprising at least one polyfunctional (meth)acrylic monomer, wherein the coating composition has <2.0·10 ‑3 , preferably ≤1.99·10 ‑3 to ≥0.1·10 ‑3 , more preferably ≤1.85·10 ‑3 to ≥0.2·10 ‑3 Theoretical crosslink densities of , and methods for making such films. Furthermore, it relates to molded articles, in particular molded articles obtainable by an in-mold decoration (IMD) process, and the use of a formable anti-glare film for the manufacture of molded articles.

Description

technical field [0001] The present invention relates to a formable antiglare polymer film and a method of making such a film. Furthermore, the invention relates to molded articles, in particular molded articles obtainable by an in-mold decoration (IMD) process, and the use of a formable antiglare film for the manufacture of molded articles. Background technique [0002] Antiglare surfaces are understood to mean optical surfaces in which the specular reflection is reduced (Becker, M.E. and Neumeier, J., 70.4: Optical Characterization of Scattering Anti-Glare Layers, SIDSymposium Digest of Technical Papers, SID, 2011, 42, 1038-1041 ). Typical applications of such surfaces can be found in display technology, but also in the fields of architecture, furniture, etc. In this regard, the anti-glare configuration of the film deserves special attention due to its wide range of uses. [0003] Various methods exist in the art for imparting anti-glare properties to film surfaces, for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/111G02B1/10C09D175/14
CPCC09D4/00C09D133/04C09D175/14G02B5/0221G02B5/0268C08F222/102C09D5/006C09D133/08C09D133/10C09D7/63
Inventor D.泰瓦讷亚甘柴曼S.科斯特罗米内J.佩特佐尔特N.贝拉姆D.沙伊布纳C.L.黄M.冯
Owner COVESTRO DEUTSCHLAND AG
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