C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/1306, 400/54
C08L 1/02 (2006.01) C08L 59/00 (2006.01) C08L 1/00 (2006.01) C08L 33/04 (2006.01) C08L 33/26 (2006.01)
Patent
CA 2012354
Incorporation into polyacetal molding compositions of 0.05-3 weight percent of certain non-meltable polymers containing formaldehyde reactive hydroxyl groups, formaldehyde reactive nitrogen groups, or formaldehyde reactive hydroxyl and formaldehyde reactive nitrogen groups, wherein the polymer has an average particle size, bath prior to melt processing with the polyacetal and after melt processing with the polyacetal, of less than to microns, results in improved thermal stability of such compositions. Also, incorporation of 0.05 to 5 weight percent of certain microcrystalline or fibrous cellulose stabilizers into polyacetal molding compositions results in improved thermal stability for such compositions.
Bennett Jones Llp
E. I. Du Pont de Nemours And Company
LandOfFree
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