Acetylenic diol ethylene oxide/propylene oxide adducts and processes for their manufacture
Patent 6313182 Issued on November 6, 2001. Estimated Expiration Date: 
May 4, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 4, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3268593 Water-based ink compositions Jet ink with amine surfactant Ethoxylated acetylenic glycols having low dynamic surface tension Patent #: 5650543 InventorsAssigneeApplicationNo. 304607 filed on 05/04/1999US Classes:516/204The agent contains organic compound containing oxygen (e.g., carboxylic acid ester)ExaminersPrimary: Cain, Edward J.Attorney, Agent or FirmForeign Patent References
International ClassB01D 012/00AbstractThis invention provides water-based compositions, particularly coating, ink, fountain solution and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of an acetylenic diol ethylene oxide/propylene oxide adduct of the structure ##STR1##where r and t are 1 or 2, (n+m) is 1 to 30 and (p+q) is 1 to 30.Also disclosed is a method for making random and block EO/PO adducts of acetylenic diols by reacting an acetylenic diol with EO and/or PO in the presence of a trialkylamine or Lewis acid.Other References
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