The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 1992
Filed:
Oct. 10, 1989
Applicant:
Inventors:
Alberto Greco, Dresano, IT;
Patrizia Blasioli, Biassono, IT;
Assignee:
Enichem Synthesis S.p.A., Palermo, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528 44 ; 528 76 ; 528 80 ; 528 83 ; 528 85 ; 528367 ; 528370 ; 528372 ;
Abstract
Copolyester-diol polycarbonates fluid at room temperature, having a number average molecular weight comprised within the range of from 1,500 to 6,000 with a glass transition temperature (T.sub.g) lower than -45.degree. C., useful in the sector of polyurethanes and in the sector of sealants, are obtained by means of a reaction of transesterification by starting from: