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Macro-diacrylates and macro-polyacrylates

A polyacrylate, acrylate-based technology, applied in the field of large diacrylates and large polyacrylates, can solve problems such as complex preparation processes

Inactive Publication Date: 2009-01-14
GEISTHACHT GKSS R&D GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of large diacrylates is complex in terms of time (more than three days) and environmental factors (multiple purification steps using large amounts of solvents)

Method used

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  • Macro-diacrylates and macro-polyacrylates
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  • Macro-diacrylates and macro-polyacrylates

Examples

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Embodiment Construction

[0101]The following examples are for illustration only and are not meant, nor should they be considered, to limit the scope of the invention.

[0102] 1. Preparation of macrodiol urethane methacrylate as network precursor.

[0103] A. Method 1 (Structural Formula I)

[0104] In Table 1 with R 1 In the 0.05mol dry macrodiol of the structural formula (III), add 0.105mol of 2,2,4- and 4,4,2-trimethylhexane diisocyanate (TMDI), subsequently in the absence of catalyst React at 100°C for 3 hours to obtain isocyanate-terminated macrodiol. In the presence of 500 ppm inhibitor, 1.1 mol of 2-hydroxyethyl methacrylate was added dropwise to the isocyanate-terminated macrodiol at 100°C. The reaction was carried out until the wavelength 2250 cm was no longer observed in the infrared absorption spectrum -1 The isocyanate group absorption peak, so that obtain the large diol polyurethane dimethacrylate of structural formula (I).

[0105] B. Method 2 (Structure II)

[0106] In Table 2 wit...

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Abstract

The invention relates to covalent polymer networks composed of macro-diacrylates and polyacrylates having shape memory properties and that can be used in medical technology.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under 35 U.S.C. §119 to European Application No. 05028119.5, filed December 22, 2005, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to bulky diacrylates and polyacrylates for the preparation of covalent polymer networks with shape memory properties, the polymer networks obtained therefrom and their use. Background technique [0004] Shape memory materials are materials that change their external shape when influenced by external stimuli. The material can pass through, for example, when the temperature increases above the so-called switching temperature (switching temperature) T trans change their shape in a controlled manner. [0005] The shape memory effect is not a specific intrinsic property of the material (shape memory polymer ("SMP")). Rather, it results directly from the combination of structure and mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/73C08G18/81
CPCC08G18/8116C08G18/73C08G18/672C08G18/42
Inventor 塔里克·阿里·阿卜杜拉·哈桑达格玛·博尔特斯多夫维尔纳·拉尔夫·施密特莫里斯·科森曼斯
Owner GEISTHACHT GKSS R&D GMBH
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