Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2006-06-06
2006-06-06
Acquah, Samuel A. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S025000, C528S286000, C528S302000, C528S308000, C528S308600, C502S150000, C502S162000, C502S170000, C502S208000, C524S706000, C524S710000, C524S711000, C524S713000
Reexamination Certificate
active
07057006
ABSTRACT:
A composition that can be used as catalyst in esterification, transesterification or polycondensation is disclosed, which comprises a stable solution comprising (a) titanium in the form of a titanium α-hydroxycarboxylic acid or its salt, (b) a C1–C6carboxylic acid, and (c) zinc in the form of a water-soluble zinc salt, and (d) water; and substantially free of an alkanolamine, an aminocarboxylic acid, or combinations two or more thereof. Also disclosed is an esterification, transesterification or polycondensation process, which comprises contacting, in the presence of the solution composition, an organic acid or its ester or its salt with an alcohol, optionally in the presence of a phosphorus compound, an organic or inorganic toning agent such as cobalt acetate, or combinations thereof.
REFERENCES:
patent: 3404121 (1968-10-01), Barkey
patent: 4501878 (1985-02-01), Adams
patent: 4611049 (1986-09-01), Kuratsuji et al.
patent: 4694099 (1987-09-01), Ahlfors et al.
patent: 5041621 (1991-08-01), Morris et al.
patent: 5095135 (1992-03-01), Yamada et al.
patent: 5237042 (1993-08-01), Kim et al.
patent: 5340907 (1994-08-01), Yau et al.
patent: 5344964 (1994-09-01), Chu et al.
patent: 5385773 (1995-01-01), Yau et al.
patent: 5519108 (1996-05-01), Yuo et al.
patent: 5532392 (1996-07-01), Gheorghiu
patent: 5714570 (1998-02-01), Kim et al.
patent: 5858549 (1999-01-01), Kielbania et al.
patent: 5866710 (1999-02-01), Ridland et al.
patent: 5907054 (1999-05-01), Setoyama et al.
patent: 6013756 (2000-01-01), Hagen et al.
patent: 6080834 (2000-06-01), Putzig et al.
patent: 6133404 (2000-10-01), Kang et al.
patent: 6140458 (2000-10-01), Terado et al.
patent: 6166170 (2000-12-01), Putzig
patent: 6258925 (2001-07-01), Dowling et al.
patent: 6277947 (2001-08-01), Kelsey et al.
patent: 6346070 (2002-02-01), Ohmatsuzawa et al.
patent: 6489433 (2002-12-01), Duan et al.
patent: 0 699 700 (1996-03-01), None
patent: 1 065 230 (2001-01-01), None
patent: 1 090 943 (2001-04-01), None
patent: 1 120 392 (2001-08-01), None
patent: 1 035 916 (2001-09-01), None
patent: 60-35020 (1985-02-01), None
patent: 2-155920 (1990-06-01), None
patent: 8-283393 (1996-10-01), None
patent: 2000-178349 (2000-06-01), None
patent: 2001-213948 (2001-08-01), None
patent: WO 99/28033 (1999-06-01), None
McBride Edward Francis
Putzig Donald Edward
Acquah Samuel A.
E. I. du Pont de Nemours and Company
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