Unsaturated cyclic anhydride end capped polyimides and polyamic acids and photosensitive compositions thereof
US-2024254284-A1 · Aug 1, 2024 · US
Quick responsive, shape memory thermoset polyimide and preparation method thereof
US10155850B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10155850-B2 |
| Application number | US-201515110143-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 7, 2015 |
| Priority date | May 23, 2014 |
| Publication date | Dec 18, 2018 |
| Grant date | Dec 18, 2018 |
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- Title
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Abstract
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A fast-response thermoplastic shape-memory polyimide and a preparation method thereof, related to a polyimide and a preparation method thereof. The present invention aims to solve the problem in high-temperature conditions of slow shape recovery poor stability, and poor mechanical properties of a shape-memory polymer prepared by utilizing an existing method. The structural formula of the polyamide of the present invention is as represented by formula (I). The preparation method is: 1. preparation of a diamine solution; 2. preparation of an anhydride-terminated high molecular weight polyamic acid; 3. preparation of a viscous sol-gel; and, 4. preparation of the thermoplastic shape-memory polyimide. The thermoplastic shape-memory polyimide prepared per the present invention is provided with a very fast shape recovery rate and improved shape-memory effect. The present invention is applicable in the field of polyimide preparation.
First claim
Opening claim text (preview).
What is claimed is: 1. A quick responsive, high-performance, thermoset shape memory polyimide, having a structure of: wherein n is 58-156, m≥1 and the molecular weight of the chain segments of said quick responsive, high-performance, thermoset shape memory polyimide between crosslinker molecules is 46-124 Kg/mol.
Assignees
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Classifications
- C08G73/1078Primary
wholly aromatic in the diamino moiety · CPC title
Wholly aromatic polyimides containing oxygen in the form of ether bonds in the main chain · CPC title
- C08G73/026Primary
Wholly aromatic polyamines · CPC title
characterised by the process itself, e.g. steps, continuous · CPC title
Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds · CPC title
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- What does patent US10155850B2 cover?
- A fast-response thermoplastic shape-memory polyimide and a preparation method thereof, related to a polyimide and a preparation method thereof. The present invention aims to solve the problem in high-temperature conditions of slow shape recovery poor stability, and poor mechanical properties of a shape-memory polymer prepared by utilizing an existing method. The structural formula of the polyam…
- Who is the assignee on this patent?
- Harbin Inst Technology
- What technology area does this patent fall under?
- Primary CPC classification C08G73/1078. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 18 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).