Title:
通気性ポリウレタン、ブレンドおよび成品
Document Type and Number:
Japanese Patent JP2005522543
Kind Code:
A
Abstract:
A breathable polyurethane having an upright moisture vapor transmission rate (MVTR) of more than about 500 gms/m2/24 hr comprises: (a) poly(alkylene oxide) side-chain units in an amount comprising about 12 wt. % to about 80 wt. % of said polyurethane, wherein (i) alkylene oxide groups in said poly(alkylene oxide) side-chain units have from 2 to 10 carbon atoms and are unsubstituted, substituted, or both unsubstituted and substituted, (ii) at least about 50 wt. % of said alkylene oxide groups are ethylene oxide, and (iii) said amount of said side-chain units is (i) at least about 30 wt. % when the molecular weight of said side-chain units is less than about 600 grams/mole, (ii) at least about 15 wt. % when the molecular weight of said side-chain units is from about 600 to about 1,000 grams/mole, and at least about 12 wt. % when the molecular weight of said side-chain units is more than about 1,000 grams/mole, and (b) poly(ethylene oxide) main-chain units in an amount comprising less than about 25 wt. % of said polyurethane. Coatings and films for textiles and other articles and applications using such polyurethanes have excellent breathability, i.e., high moisture vapor transmission rates (MVTR).
Inventors:
Alexander bu louvenin
George E Snow
Ronald Dee Varun
Garry A. Anderle
George E Snow
Ronald Dee Varun
Garry A. Anderle
Application Number:
JP2003584137A
Publication Date:
July 28, 2005
Filing Date:
March 07, 2003
Export Citation:
Assignee:
Noveon IP Holdings Corporation
International Classes:
C08L75/08; C08G18/08; C08G18/12; C08G18/40; C08G18/48; C08G18/66; C08L101/00; C09D175/04; C08L33/00; C08L33/18; (IPC1-7): C08G18/48; C08L75/08; C08L101/00
Attorney, Agent or Firm:
Masataka Oshima