Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2007-07-10
2007-07-10
Truong, Duc (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S275000, C528S279000, C528S280000, C528S281000, C528S282000, C528S283000, C528S285000, C528S302000, C528S308000, C528S308600, C528S486000, C528S488000, C528S491000, C528S499000, C524S783000, C524S785000, C524S786000, C524S794000
Reexamination Certificate
active
11236878
ABSTRACT:
A method is described for the manufacture of polyesters of aromatic dicarboxylic acids with aliphatic and/or cycloaliphatic dials, in which an aromatic dicarboxylic acid in the presence of a monocarboxylic acid or a mixture of a monocarboxylic acid present in a saturated solution with water or another suitable solvent is converted with an aliphatic or cycloaliphatic dial to a dicarboxylic acid alkanediolestercarboxylate and/or its oligomers, which are polycondensed in further process steps to the polyester.
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Deiss Stefan
Heldmann Karl-Heinz
Reisen Michael
Seidel Eckhard
Myers Jonathan
Truong Duc
Wilford Andrew
Zimmer Aktiengesellschaft
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