Non-stick coating system with high and low melt viscosity PTFE f

Details Non-stick coating system with high and low melt viscosity PTFE f Non-stick coating system with high and low melt viscosity PTFE f

1990-12-12

1992-12-01

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Composite

Of polyisocyanurate

4273722, 4273855, 428458, 524514, B32B 1508, B32B 2706, B05D 302

Patent

active

051680130

ABSTRACT:
Improved non-stick coating systems can be applied to untreated smooth substrate with a primer of a first polytetrafluoroethylene having a melt viscosity over 10.sup.10 poises plus a second polytetrafluoroethylene having a melt viscosity in the range of 10.sup.3 to 10.sup.8 poises to give a concentration gradient.

REFERENCES:
patent: 3857852 (1974-12-01), Tieszen
patent: 3928675 (1975-12-01), Tieszen
patent: 4049863 (1977-09-01), Vassilion
patent: 4087394 (1978-05-01), Concannon
patent: 4118537 (1978-10-01), Vary et al.
patent: 4123401 (1978-10-01), Berghmans et al.
patent: 4167605 (1979-09-01), Attwood et al.
patent: 4252859 (1981-02-01), Concannon et al.
patent: 4287112 (1981-09-01), Berghmans
patent: 4425448 (1984-01-01), Concannon et al.
patent: 4548986 (1985-10-01), Suzuki et al.

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