US 2003/0171464 A1 · Thermoplastic hydrophilic polymeric compositions for moisture vapour permeable structures

Abstract

The present invention relates to thermoplastic hydrophilic polymeric compositions for making a liquid impermeable moisture vapor permeable structure, for example by forming the composition into a layer or film. The thermoplastic compositions comprise selected thermoplastic polymers and selected compatible plasticiser that provide the thermoplastic hydrophilic composition with a desired tackiness level, without impairing the moisture vapor permeability of films or layers made from the thermoplastic hydrophilic polymeric compositions. The layers made from the thermoplastic hydrophilic polymeric compositions of the present invention can find a variety of applications wherein liquid imperviousness and moisture vapor permeability are desirable.

Claims29

Dependent claims

A thermoplastic hydrophilic polymeric composition comprising:

a thermoplastic hydrophilic polymer having hard and soft segments in the molecular chain, wherein said thermoplastic hydrophilic polymer shows, at least in the solid state, and typically at room temperature, a multi-phase morphology with hard and soft domains, and
at least a suitable plasticiser which preferentially associates with said hard segments of said thermoplastic hydrophilic polymer, and which is capable of preferentially softening said hard domains.

Dependencies are inferred from the claim text.

Facts

Application

10/400,055Filed 26 Mar 2003

Priority

EP 00121585.42 Oct 2000

Published

11 Sep 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

C08K 5/103
Of monocarboxylic acids: with polyalcohols
C08K 5/11
Esters; Ether-esters: of acyclic polycarboxylic acids
Y10T 428/249953
Web or sheet containing structurally defined element or component: composite having voids in a component [e.g., porous, cellular, etc.]
C08K
Use of inorganic or non-macromolecular organic substances as compounding ingredients

Thermoplastic hydrophilic polymeric compositions for moisture vapour permeable structures

Life of this patent

Thermoplastic hydrophilic polymeric compositions for moisture vapour permeable structures

Life of this patent

Abstract

Claims29