4-carboxy polyesters and method of making them

• US 3,264,267 A
• Filed: 09/10/1962
• Issued: 08/02/1966
• Est. Priority Date: 09/10/1962
• Status: Expired due to Term

• Current Assignee: Stephens, James R., Strien Richard E Van
• Original Assignee: Stephens, James R., Strien Richard E Van
• Inventors: Stephens, James R., STRIEN RICHARD E VAN
• Application Number:
  US04/222,670
• Time in Patent Office: 1,422 Days
• US Class Current: 528/296
• CPC Class Codes: C08G 63/20 Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
• CPC Class Codes: C08G 63/42 Cyclic ethers C08G59/00 takes precedence; Cyclic carbonates; Cyclic sulfites; Cyclic orthoesters
• CPC Class Codes: C08G 63/54 the acids or hydroxy compounds containing carbocyclic rings
• CPC Class Codes: C08G 63/58 Cyclic ethers C08G59/00 takes precedence; Cyclic carbonates; Cyclic sulfites ; Cyclic orthoesters

Claims

1. A METHOD FOR PREPARING RESINOUS LINEAR 4-CARBOXY POLYESTERS WHICH COMPRISES:

(A) REACTION AT A TEMPERATURE BELOW 70*C. 4-VINYL TRIMELLITATE ANHYDRIDE WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF A MONO-EPOXIDE AND A MIXTURE OF A MONO-EPOXIDE WITH A GLYCOL, SAID EPOXIDE AND GLYCOL EACH HAVING FROM 2 TO 9 CARBON ATOMS, TO OBTAIN A RESINOUS LINEAR POLYESTER HAVING THE REPEATING UNIT