US 8,941,284 B2 · Electromagnetic converter with a polymer element based on a mixture of polyisocyanate and isocyanate-functional prepolymer and a compound with at least two isocyanate reactive hydroxyl groups

Abstract

The present invention relates to an electromechanical converter, in particular an electromechanical sensor, actuator and/or generator, which comprises a polymer element obtainable from a reaction mixture comprising a polyisocyanate, a polyisocyanate prepolymer and a compound having at least two isocyanate-reactive hydroxy groups. The present invention additionally relates to a process for the production of such an electromechanical converter and to the use of a polymer element according to the invention as an electromechanical element. The present invention relates further to an electronic and/or electrical device comprising an electromechanical converter according to the invention and to the use of an electromechanical converter according to the invention in an electronic and/or electrical device.

Claims16

Dependent claims

An electromechanical converter having at least two electrodes and at least one electroactive polymer element, wherein the polymer element is arranged between two electrodes,

and wherein the polymer element comprises the reaction product of
A) a polyisocyanate
B) a polyisocyanate prepolymer and
C) a compound having at least two isocyanate-reactive hydroxy groups.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

13/387,413Filed 20 Jul 2010

Priority

EP 0900991131 Jul 2009

Published

US 2012/0194039 A12 Aug 2012

Granted

27 Jan 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C08G 18/10
Processes: prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
H10N 30/098
Forming piezoelectric or electrostrictive materials: forming organic materials
H10N 30/857
Piezoelectric or electrostrictive active materials: macromolecular compositions
Y10S 310/80
Electrical generator or motor structure: piezoelectric polymers, e.g. PVDF

Electromagnetic converter with a polymer element based on a mixture of polyisocyanate and isocyanate-functional prepolymer and a compound with at least two isocyanate reactive hydroxyl groups

Life of this patent

Electromagnetic converter with a polymer element based on a mixture of polyisocyanate and isocyanate-functional prepolymer and a compound with at least two isocyanate reactive hydroxyl groups

Life of this patent

Abstract

Claims16