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Radiation-crosslinking and thermally crosslinking PU systems-based on poly(e-caprolactone)polyester polyols

A technology of polyester polyol and caprolactone, which is applied in the field of polyurethane system and can solve problems such as no specific instructions

Inactive Publication Date: 2010-02-24
BAYER MATERIALSCIENCE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nothing is specified regarding its compatibility with also present ethylenically unsaturated compounds such as acrylate-based reactive diluents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0098] Two-component formulation A

[0099] The isocyanate reactive component consists of 5.59g of difunctional poly(ε-caprolactone)polyol (number-average molar mass about 650g / mol), 0.40g of acrylic acid 1,4-bis(thionaphthyl)- 2-Butyl ester, 0.030 g of Irgacure OXE 01 (product of Ciba Specialty Chemicals) and 0.020 g of 2,6-di-tert-butyl-4-methylphenol were prepared by stirring the mixture at 50°C until a clear solution appeared. 3.54 g of a polyisocyanate obtained from hexane diisocyanate with a high proportion of oxidiazine diones (Desmodur XP 2410, experimental product of Bayer MaterialScience AG, NCO content: 23.5%) were used as isocyanate component.

[0100] Two-component formulation B

[0101] The isocyanate reactive component consists of 2.70 g of difunctional poly(ε-caprolactone) polyols (number-average molar mass about 650 g / mol), 4.05 g of difunctional poly(tetrahydrofuran) polyols (Terathane 1000, Commercial product from Invista, number average molar mass about 100...

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PUM

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Abstract

The present invention provides polyurethane Systems which cure by radiation and thermal action with crosslinking, and use thereof for the produetion of holographic media. The polyurethane compositionsof the invention comprise A) polyisocyanates, B) polyols, comprising at least one poly(e-caprolactone)polyester polyol, C) Compounds having groups which react on exposure to actinic radiation with ethylenically unsaturated Compounds with polymerization (radiation-curing groups), D) optionally free radical stabilizers and E) photoinitiators.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under 35 U.S.C. § 119(e) to Provisional Application Serial No. 60 / 922,981 (filed April 11, 2007). technical field [0003] The present invention relates to polyurethane systems, which cure by means of crosslinking by the action of radiation and heat, and their use for the production of holographic media. Background technique [0004] In the production of holographic media, as described in US 6,743,552, information is stored in a polymer layer consisting essentially of a matrix polymer and a very specific polymeric polymer homogeneously distributed therein. polymerized monomer. This matrix polymer can be based on polyurethane. Their preparation usually starts from NCO-functional prepolymers, which are crosslinked with polyols, such as polyethers or polyesters, to form urethanes. [0005] However, a problem is that optical damage of the storage layer, such as opacity, often occurs due ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/42C08G18/48C08G18/78C08G18/63G03H1/02G11C13/04
CPCC08G18/798C08G18/7887C08G18/4277C08G18/631C08G18/638G03H2001/0264G11B7/245G11B7/24044C08G18/42C08G18/78C08G18/48G03H1/02
Inventor N·斯托克尔F·-K·布鲁德M·尼斯滕H·布卢姆S·斯特拉兹萨
Owner BAYER MATERIALSCIENCE AG