(19)
(11) EP 1 990 354 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
21.01.2009 Bulletin 2009/04

(43) Date of publication:
12.11.2008 Bulletin 2008/46

(21) Application number: 07425264.4

(22) Date of filing: 08.05.2007
(51) International Patent Classification (IPC): 
C08G 18/32(2006.01)
 C08J 9/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(71) Applicants:
  • Eigenmann & Veronelli S.p.A.
    20017 Rho (MI) (IT)
  • New Wind S.r.l.
    72017 Ostuni (BR) (IT)

(72) Inventors:
  • Praderio, Francesco
    21051 Arcisate (VA) (IT)
  • Muha, Krunoslav
    20020 Arese (MI) (IT)
  • Cruccas, Nilson
    85034 Francavilla Sul Sinni (PZ) (IT)

(74) Representative: Perani, Aurelio et al
Perani Mezzanotte & Partners Piazza San Babila, 5
20122 Milano
20122 Milano (IT)

   


(54) Viscoelastic polyurethane foam and process for the preparation thereof


(57) The invention concerns a viscoelastic polyurethane foam obtainable by the reaction system comprising at least a composition a) of isocyanate MDI and b) a polyol composition comprising at least an expanding agent, at least a fatty derivative selected from an amide of an amine C2-C10 and a fatty acid C6-C22 and/or an ester of an alcohol C2-C10 and a fatty acid C6-C22, at least a surfactant, at least a catalyst and at least a polyether polyol having nominal average functionality of 3 to 6, average molecular weight of 800 to 6000, n° of OH of 28 to 200 mg KOH/g, a percentage of ethylene oxide (OE) higher than 50%, said ethylene oxide (OE) being in an amount of 20 to 95 parts by weight on 100 parts by weight of the polyol composition. The invention further concerns a process for manufacturing the viscoelastic polyurethane foam and products made of such a foam.