(19)
(11) EP 0 227 819 A1

(12)

(43) Date of publication:
08.07.1987 Bulletin 1987/28

(21) Application number: 86904595.0

(22) Date of filing: 26.06.1986
(51) International Patent Classification (IPC): 
C08G 18/ 42( . )
C08G 18/ 46( . )
C08G 64/ 40( . )
C08G 18/ 44( . )
C08G 64/ 20( . )
(86) International application number:
PCT/US1986/001384
(87) International publication number:
WO 1987/000185 (15.01.1987 Gazette 1987/01)
(84) Designated Contracting States:
BE DE FR GB IT NL

(30) Priority: 01.07.1985 US 19850750362

(71) Applicant: THE DOW CHEMICAL COMPANY
Midland Michigan 48640-1967 (US)

(72) Inventor:
  • HARRIS, Robert, F.
    Midland, MI 48640 (US)

(74) Representative: Huber, Bernhard, Dipl.-Chem., et al 
Patentanwälte H. Weickmann, Dr. K. Fincke F.A. Weickmann, B. Huber Dr. H. Liska, Dr. J. Prechtel, Dr. B. Böhm Postfach 86 08 20
D-81635 München
D-81635 München (DE)

   


(54) A PROCESS FOR INCREASING THE MOLECULAR WEIGHT OF POLY(ALKYLENE CARBONATE) POLYOLS