Landec Corporation

Mark A Wanthal

Ray F Stewart

Steven P Bitler

David A Kamp

David D Taft

Donald A Schultz

Paul A Meyers

Paul C Paetzke

Guy J Stokes

Novel modifying agents contain a sharply-melting crystalline polymer ingredient, preferably a side chain crystalline (SCC) ingredient, and an active chemical ingredient. Such modifying agents, especially when in the form of particles, can be placed in contact with a matrix, will not modify the matrix below the crystalline melting point T , but will rapidly modify the matrix above T . The active chemical ingredient can react with the matrix, catalyze a reaction of the matrix, or inhibit a reaction of the matrix. Particularly useful compositions are polymer precursors which are storage-stable at low temperatures but which are rapidly converted to crosslinked resins when heated to temperatures above T , optionally in the presence of light.

Polymeric modifying agents

The present invention provides a modeling paste comprising a latent material which can be applied as a thick layer to a substrate and which after activation rapidly crosslinks to a machinable surface.

Modeling pastes

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Redwood Shores, CA, United States of America

Mark A Wanthal