Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2006-08-30
2009-10-06
Peng, Kuo-Liang (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C568S001000
Reexamination Certificate
active
07598302
ABSTRACT:
The present invention is directed to an adhesion promoter for bonding fluoropolymers and, more specifically, for bonding a fluoroplastic layer to a fluroelastomer layer in a multi-layered article, such as a fuel filler hose. In one embodiment, the adhesion promoter includes a solvent, a polyallyamine (PAA), and an organo-onium compound. The solvent can include an organic solvent, such as an alcohol, e.g., methanol, ethanol, or isopropanol. The polyallylamine includes a homopolymer of 2-propen-1-amine, and the organo-onium compound can include an organic phosphonium salt. The final composition of the adhesion promoter can include solvent in the range of about 80% by weight to about 99% by weight; polyallylamine in the range of about 0.5% by weight to about 10% by weight; and organo-onium compound in the range of about 0.5% by weight to about 10% by weight. Such adhesion promoter may further optionally include a silane, such as an organosilane.
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Bowen Kathleen K.
Peng Kuo-Liang
Rockhill Alvin T.
Veyance Technologies, Inc
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