Method for producing radically post-cross-linked polymers

Details Method for producing radically post-cross-linked polymers Method for producing radically post-cross-linked polymers

2005-05-10

2005-05-10

Robertson, Jeffrey (Department: 1712)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

C522S092000, C522S096000, C525S454000, C525S455000, C528S074500, C528S075000

Reexamination Certificate

active

06890967

ABSTRACT:
Radically post-crosslinked polymers are made by a process comprising the steps of: (1) forming a polyurethane (a*) by reacting a compound (a) with an aliphatic and/or an aromatic isocyanate and a compound (c) wherein compound (a) is the product of the reaction of an epoxidized fatty acid ester and/or an epoxidized triglyceride with acrylic acid and/or methacrylic acid and wherein compound (c) is a polyol ester having two or more C═C double bonds per molecule; (2) forming a crosslinked polyurethane by reacting the polyurethane (a*) with a radical initiator (b). The polymers are useful as components in composites comprised of natural and/or synthetic fibers.

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Kirk-Othmer, Encyclopedia of Chemical Technology, 4th Edition, John Wiley & Sons, New York, (1995), vol. 14, pp. 902-934.
Gerhard W. Becker (Ed.), Kunststoff-Handbuch, vol. 7, “Polyurethane”, (edited by Günter Oertel), 3rd Edition, Carl Hanser Verlag, Munich, (1993), pp. 11-21, 76-103.

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