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:
Dec. 08, 1981
Filed:
Jan. 08, 1979
Applicant:
Inventors:
Ennio Cozzi, Cantalupo, IT;
Massimo Tardani, Bosto Arsizio, IT;
Assignee:
Snia Viscosa, Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521138 ; 521139 ; 521140 ; 525 49 ;
Abstract
Unsaturated polyester resins having an acidity number of 5-90 mg. KOH/g. and a molecular weight of 500-5000 and which are capable of entrapping air or other inert gases so as to form structural foams and contain in the chain 0.1 to 20 mol % of amide and/or amine groups. These groups are preferably derived from the reaction of an organic compound having two reactive groups at least one of which contains nitrogen with the polycarboxylic acid and/or polyvalent alcohol contained in the polyester resin.