Stock material or miscellaneous articles – Composite
Reexamination Certificate
2005-05-31
2005-05-31
Zacharia, Ramsey (Department: 1773)
Stock material or miscellaneous articles
Composite
C524S107000, C524S111000, C524S356000, C524S359000, C524S360000, C524S609000, C524S611000
Reexamination Certificate
active
06899952
ABSTRACT:
A polysulfone-based resin solution composition which is stable, contains no undissolved resin left in the liquid, shows neither thickening nor gelation, gives a smooth coating layer when spread on a base film and does not generate any harmful component, and a laminate which is produced by spreading and drying the same polysulfone-based resin solution composition on a base film surface. More specifically, a polysulfone-based resin solution composition prepared by dissolving at least one type of polysulfone-based resin in a mixed solvent composed of a lactone (A) or ketone (B) having an aromatic ring, and cycloketone (C) and aliphatic ketone (D) having a boiling point of 150° C. or lower, and a laminate which is produced by spreading and drying the same polysulfone-based resin solution composition on a base film surface.
REFERENCES:
patent: 4020046 (1977-04-01), King et al.
patent: 4598137 (1986-07-01), Guiver et al.
patent: 4642170 (1987-02-01), Alvino et al.
patent: 7-024858 (1995-01-01), None
patent: 7-300559 (1995-11-01), None
patent: 8-321219 (1996-12-01), None
Armstrong Kratz Quintos Hanson & Brooks, LLP
Daicel Chemical Industries Ltd.
Zacharia Ramsey
LandOfFree
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