Non-chalking release/wear coating

Details Non-chalking release/wear coating Non-chalking release/wear coating

1998-02-20

2000-05-09

Chen, Vivian

Stock material or miscellaneous articles

Composite

Of polyisocyanurate

428421, 428457, 526242, 526250, 526255, 524155, 524284, 524300, 524356, 524379, B32B 1508, B32B 2706, B32B 2732

Patent

active

060601671

ABSTRACT:
A release coating of thermally stable essentially non-fluorocarbon polymer and low molecular weight fluorocarbon polymer is made non-chalking; i.e., not cause waxy buildup on fabrication equipment producing articles having the coating thereon, by a special polymerization process for making the fluorocarbon polymer, viz., aqueous dispersion polymerization using conventional initiator, dispersing agent, and chain transfer agent, but also having carboxylic acid, salt, ester or peroxide thereof, or alkanol or ester thereof or ketone present during the polymerization. Alternatively, the additive can be fluorosurfactant which contains carbon-hydrogen bonding and which also serves as the dispersing agent in the polymerization medium.

REFERENCES:
patent: 3635926 (1972-01-01), Gresham et al.
patent: 3956000 (1976-05-01), Kuhls et al.
patent: 4134995 (1979-01-01), Fumoto et al.
patent: 4380618 (1983-04-01), Khan et al.
patent: 4530981 (1985-07-01), Malhotra
patent: 4564652 (1986-01-01), Shimizu et al.
patent: 4621116 (1986-11-01), Morgan

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