Surfactants for shape memory polymer foam synthesis
AssigneeSyracuse University
InventorsMary Beth Monroe, Natalie M. Petryk
Life of this patent
Estimating the term…
Abstract
A readily available and inexpensive surfactant for shape memory polymer foam formation. The surfactant is used as a pore stabilizer during polymerization in the presence of a blowing agent. The surfactant is formed by reacting a conventional surfactant having a free reactive group, such as a hydroxyl group, an amine group, or a carboxylic acid group, with an isocyanate to form a urethane, urea, or amide bond, respectively, at the location of the reactive group. An exemplary surfactant is polyethoxylated castor oil that has been reacted with 3-(triethoxysilyl)propyl isocyanate, to form macroglycerol ricinoleate urethane 3-(triethoxysilyl)propyl.
Claims15
A pore stabilizer for use in polymer foam formation, comprising a surfactant having a free group reacted with an isocyanate to form a urethane bond.
A method of forming a pore stabilizer, comprising the steps of:
- providing a surfactant having a free group;
- and
- reacting the surfactant with an isocyanate to form a urethane bond at the free group.
Dependencies are inferred from the claim text.