Browse Prior Art Database

Mixtures of Multicomponent Polymers with Fillers

IP.com Disclosure Number: IPCOM000103182D
Original Publication Date: 1990-Jul-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 34K

Publishing Venue

IBM

Related People

Brady, M: AUTHOR [+4]

Abstract

Disclosed is a method of producing two or more component polycondensation polymers. One or more of the components may be organic fillers, particularly those consisting of low dielectric constant materials as PTFE.

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Mixtures of Multicomponent Polymers with Fillers

      Disclosed is a method of producing two or more component
polycondensation polymers.  One or more of the components may be
organic fillers, particularly those consisting of low dielectric
constant materials as PTFE.

      In a recent article 1, a method to produce polyimides filled
with inorganic particles was described.  Uniform distribution is
reached by co-milling of a solution of a polyimide component with
inorganic particles.  The polyamic acid is synthesized from the same
solution by adding the second polyimide component.

      In a typical process PTFE powder is suspended in a solution of
a condensable monomer, e.g., diamine, diol, dianhydride, etc.
Distribution of the powder in the solution can be aided by ball
milling, sonification, or shaking.  Finally, the second monomer
(solid or solution) is added to the solution.  The polycondensation
then occurs as usual, ie., heating, water extraction, etc.,
conditions. The monomer ratio is kept close to 1 to achieve high
molecular weights.

      Reference:
1  "Method for Suspension of Solid Particles in Polyamic Acid
Solution," #26359, Research Disclosure, 263 (March 1986) Kenneth
Mason Publications Ltd. England.

      Disclosed anonymously