3625994

Information

• Patent Grant
• 3625994

• References
• Source

• Patent Number

  3,625,994

• Date Filed

  Not available

• Date Issued

  Tuesday, December 7, 1971
  53 years ago

• CPC

  • C08G63/82 - characterised by the catalyst used
  • C07C67/46 - from ketenes or polyketenes
  • C08G63/005 - Polyesters prepared from ketenes
  • C08G63/42 - Cyclic ethers Cyclic carbonates Cyclic sulfites Cyclic orthoesters
  • C08G63/672 - Dicarboxylic acids and dihydroxy compounds

• US Classifications

  • 560 - Organic compounds
  • 524 - Synthetic resins or natural rubbers
  • 562 - Organic compounds