Invention Application
- Patent Title: Highly concentrated formaldehyde solution, production and reaction thereof
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Application No.: US10494762Application Date: 2002-11-05
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Publication No.: US20050040359A1Publication Date: 2005-02-24
- Inventor: Eckhard Stroeffer , Martin Sohn , Hans Hasse , Klemens Schilling
- Applicant: Eckhard Stroeffer , Martin Sohn , Hans Hasse , Klemens Schilling
- Priority: DE101541872 20011105; DE102382484 20020821
- International Application: PCT/EP02/12346 WO 20021105
- Main IPC: C07C45/86
- IPC: C07C45/86 ; C07C31/02 ; C07C31/20 ; C07C45/79 ; C07C45/82 ; C07C47/04 ; C07C47/058

Abstract:
In an aqueous formaldehyde solution comprising formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x of ≧65% by weight, the mean molar mass {overscore (M)} of the polyoxymethylene glycols is, as a function of the formaldehyde concentration, equal to or less than the values given by equation I: ( M _ g / mol ) = 48 + 6.589 · 10 - 1 · ( x % by weight ) + 4.725 · 10 2 · ( x % by weight ) 2 - 3.434 · 10 - 3 · ( x % by weight ) 3 + 9.625 · 10 - 5 · ( x % by weight ) 4 - 1.172 · 10 6 · ( x % by weight ) 5 + 5.357 · 10 - 9 · ( x % by weight ) 6 ( I ) where: {overscore (M)} is the mean molar mass, and x is the total concentration of formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in % by weight (total formaldehyde concentration).
Public/Granted literature
- US07193115B2 Highly concentrated formaldehyde solution, production and reaction thereof Public/Granted day:2007-03-20
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