US 12,501,519 B2 · Positive temperature coefficient composition

Abstract

The present invention relates to a positive temperature coefficient composition comprising a semi-crystalline material, at least one binder, from 0.5 to 9.5% by weight of an electronically conductive material and a solvent. Furthermore, the present invention relates to use of a positive temperature coefficient composition according to the present invention in heating elements and sensors. A positive temperature coefficient composition according to the present invention provides low and stable resistance till self-regulating temperature, which allows fast heating of the heating element. Furthermore, the positive temperature coefficient composition according to the present invention has high PTC ration and therefore, has higher safety and more power can be applied to the heating element.

Claims13

Dependent claims

A positive temperature coefficient composition comprising:

a) a semi-crystalline material;
b) at least one binder;
c) from 4.5 to 8% by weight of an electronically conductive filler;
and
d) a solvent.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/596,361Filed 16 May 2017 · continuation

Priority

EP 1419352517 Nov 2014

Published

US 2017/0257910 A17 Sep 2017

Granted

16 Dec 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

H05B 3/146
The material being non-metallic: conductive polymers, e.g. polyethylene, thermoplastics
H01C 7/027
Having positive temperature coefficient: consisting of conducting or semi-conducting material dispersed in a non-conductive organic material
H01C 7/028
Having positive temperature coefficient: consisting of organic substances
H01C 17/06586
Characterised by the permanent binder: composed of organic material

Positive temperature coefficient composition

Life of this patent

Positive temperature coefficient composition

Life of this patent

Abstract

Claims13