Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2007-09-11
2007-09-11
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C502S150000, C521S172000, C528S198000, C528S403000, C528S405000, C528S411000, C528S412000, C528S413000, C528S415000, C528S419000
Reexamination Certificate
active
11091981
ABSTRACT:
A method of forming a polyethercarbonate polyol enhances incorporation of CO2into the polyethercarbonate polyol. The method provides a catalyst including a multimetal cyanide compound. The multimetal cyanide compound has an ordered structure defined by a cationic catalytic center and an anionic backbone with the anionic backbone spatially arranged about the cationic catalytic center. The anionic backbone is modified with a supplemental anionic spacer to affect the spatial arrangement and catalytic activity of the cationic catalytic center. The supplemental anionic spacer is incorporated into the multimetal cyanide compound to establish the general formula, M1a[M2b(CN)cMd3Xe]f, wherein M1, M2, and M3are various metal ions and X is the supplemental anionic spacer. An H-functional initiator, an alkylene oxide, and CO2are reacted in the presence of the modified multimetal cyanide compound to form the polyethercarbonate polyol.
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Dexheimer Edward M.
Hinz Werner
Wildeson Jacob
BASF Corporation
Borrego Fernando A.
Boykin Terressa
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