US 6,982,308 B2
PTFE-based formulation for the insulation of integrated circuits
Valery Kapeliouchko, Alessandria (Italy); Enrico Marchese, Asti (Italy); and Tatiana Temtchenko, Alessandria (Italy)
Assigned to Solvay Solexis S.p.A., Milan (Italy)
Filed on Oct. 22, 2004, as Appl. No. 10/970,009.
Application 10/970009 is a division of application No. 09/931756, filed on Aug. 20, 2001, granted, now 6,825,304.
Claims priority of application No. MI2000A1935 (IT), filed on Sep. 01, 2000.
Prior Publication US 2005/0261454 A1, Nov. 24, 2005
Int. Cl. C08F 214/26 (2006.01)
U.S. Cl. 526—247 20 Claims
 
1. A formulation based on the PTFE, homopolymer or modified, comprising:
1) latex of said PTFE having a particle diameter between 5 and 100 nm, comprising an anionic fluorinated surfactant in an amount in the range of 2% to 25% by weight based on the PTFE;
2) a non ionic fluorinated surfactant, added to the PTFE latex in an amount in the range of 18% to 60% by weight based on the PTFE.