Patent · US Active

Organic polyurethane shape memory material and a preparation method thereof

US8318889B2 · kind B2 · utility

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1References

1Claims

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Assignee

CHUNG-SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY, ARMAMENTS BUREAU, M.N.D · TW

Inventors

Wen-Chiung Su · Longqi, TW
Cheng-Che Tsai · New Taipei, TW
Ching Yu · Taichung, TW
Shenghong A. Dai · Wallingford, US
Ru-Jong Jeng · Taipei, TW

Key dates

Filing date	Aug 17, 2007
Grant date	Nov 27, 2012
Priority date	—
Expiry date	Oct 12, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2280/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

An organic polyurethane shape memory material includes a C10 chain or C18 chain and consists of hard segment and soft segment. The material is produced by reacting the single-chain type dendrimer with diethylenetriamine to produce dendrimer. Then dendrimer reacts with N-(3-aminopropyl)diethanolamine to produce dendritic diols. Next, polymer HO(C6H10O2)xC2H4OC2H4(C6H10O2)yOH, where x+y=25˜26, reacts with methylenedi-p-phenyl diisocyanate, and at least one type of dendritic diols is added to produce the organic polyurethane shape memory material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.