Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant
Reexamination Certificate
2005-03-22
2005-03-22
Cooney, Jr., John M. (Department: 1711)
Compositions
Compositions containing a single chemical reactant or plural...
Organic reactant
C252S182240, C252S182270, C252S182280, C528S076000, C564S437000, C568S606000, C568S607000, C568S608000, C568S630000
Reexamination Certificate
active
06869543
ABSTRACT:
Clear, amine-initiated polyether polyols are made by epoxidizing an amine in the presence of an alkali metal hydroxide catalyst. By reducing the amount of catalyst used during the polyol synthesis and by adding the catalyst after between 5 and 30% of the total amount of at least one alkylene oxide has been added, after lactic acid neutralization, gives a short chain polyol that has foam processing characteristics similar to the conventional sulfuric acid neutralized polyol. The polyols produced in this manner are particularly useful for the production of polyurethane and polyisocyanurate foams.
REFERENCES:
patent: 4391728 (1983-07-01), Korczak et al.
patent: 4430490 (1984-02-01), Doerge
patent: 4562290 (1985-12-01), Korczak et al.
patent: 4877879 (1989-10-01), Gansow
patent: 5786405 (1998-07-01), Schilling et al.
patent: 6284812 (2001-09-01), Rotermund et al.
Japanese Abstract, 57168918, Oct. 18, 1982, Polyether polyols for rigid polyurethane foams.
Japanese Abstract, 57168917, Oct. 18, 1982, Polyether polyol for polyurethane foams.
Anderson Nathan L.
Doerge Herman P.
Haider Karl W.
Headley Keith J.
Ingold Kerry A.
Bayer Polymers LLC
Cooney Jr. John M.
Gil Joseph C.
Seng Jennifer R.
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