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

1992-09-11

1993-06-29

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Composite

Of polyisocyanurate

428463, 524171, 524520, 525189, B32B 2700, B32B 1508

Patent

active

052233430

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.4 to 10.sup.8 poises to give a concentration gradient.

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patent: 4252859 (1981-02-01), Concannon et al.
patent: 4287112 (1981-09-01), Berghamans
patent: 4351883 (1982-09-01), Marcantonio et al.
patent: 4425448 (1984-01-01), Concannon et al.

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