Patents Assigned to Merquinsa Mercados Quimicos, S.L.
  • Polyurethane thermoplastic material and production process
    Patent number: 6140453
    Abstract: The thermoplastic polyurethane material has the general formula I ##STR1## (1<f<500; 1<f'<15; R and R'=alkyl or aryl) and X has formula II ##STR2## (2<n<140; 1<(n'+n")<51). The process for the preparation thereof comprises reacting a polyether-polycaprolactone block copolymer having a molecular weight ranging from 1000 to 6000 of formula IIa ##STR3## with a chain extender of formula HO--R'--OH and a diisocyanate of formula OCN--R--NCO.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: October 31, 2000
    Assignee: Merquinsa Mercados Quimicos, S.L.
    Inventors: Joaquim Julia Barges, Jose Luis Ayuso Piqueras