Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 13, 2009
Patent Application Number
11150679
Date Filed
June 10, 2005
Patent Primary Examiner
Patent abstract
A process for the polymerization of formaldehyde, comprising contacting formaldehyde in a hydrocarbon solution with an aliphatic anhydride and a quaternary ammonium salt polymerization initiator of the formula:R1R2R3R4N+X−where R1 is an aliphatic or olefinic hydrocarbon group containing about 18 to about 25 carbon atoms; R2, R3, and R4 are each methyl, ethyl, and/or propyl, such that the total number of carbon atoms in R2, R3, and R4 combined is between 3 and 7; and X− is an organic anion.
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