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Fluorine Containing Aryl Cyanate Laminating Resins

IP.com Disclosure Number: IPCOM000047913D
Original Publication Date: 1983-Dec-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 20K

Publishing Venue

IBM

Related People

Cox, RJ: AUTHOR [+3]

Abstract

Polyaryl cyanates have been shown to be useful as thermosetting resins in the manufacture of printed circuit (PC) boards. These materials have good electrical and thermal properties, but their mechanical properties are not satisfactory. The glass-filled pre preg made from this material is brittle. Materials such as bis-maleimide have been added to the formulation to form a resin which has improved processability. The resin system from a mixture of bisphenol A dicyanate and bis-maleimide is not a copolymer but is simply an interpenetrating blend of the two homo polymers. The mechanical properties of this system are dictated by the properties of the individual homo polymers.

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Fluorine Containing Aryl Cyanate Laminating Resins

Polyaryl cyanates have been shown to be useful as thermosetting resins in the manufacture of printed circuit (PC) boards. These materials have good electrical and thermal properties, but their mechanical properties are not satisfactory. The glass-filled pre preg made from this material is brittle. Materials such as bis- maleimide have been added to the formulation to form a resin which has improved processability. The resin system from a mixture of bisphenol A dicyanate and bis-maleimide is not a copolymer but is simply an interpenetrating blend of the two homo polymers. The mechanical properties of this system are dictated by the properties of the individual homo polymers. Polyaryl cyanates in which all or some of the hydrogen atoms have been substituted by fluorine or fluoroalkyl chains show superior mechanical properties when used as laminating resins for PC boards. Flow, operability and flexibility are all improved over the nonfluorinated counterparts. Copolymers of these fluorinated monomers can also be prepared and will allow specific amounts of a desired physical property to be incorporated into the final polymers. Structures of the following type are examples of the above:

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