Shape memory styrene copolymer
OwnerTat Hung Tonginventor
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Abstract
A shape memory polymer which is a reaction product of styrene, a vinyl compound, a multifunctional crosslinking agent and an initiator. The shape memory polymer has particular application as a contact lens mold.
Claims23
A shape memory polymer comprising a modifying polymer, a reaction product of styrene, a vinyl compound other than styrene, about 0.5 to about 5% by weight of a multifunctional crosslinking agent and an initiator.
A shape memory polymer comprising a reaction product of styrene, a vinyl compound other than styrene, about 0.5 to about 5% by weight of a multifunctional crosslinking agent and an initiator, wherein said vinyl compound is vinyl neodecanoate, vinyl benzoate, vinyl propionate, vinyl stearate, a methylstyrene, 4-(vinyloxy)butyl stearate or a vinyl pyridine.
A shape memory polymer comprising a reaction product of styrene, a vinyl compound selected from group consisting of vinyl neodecanoate, vinyl benzoate, vinyl propionate, vinyl stearate, a methylstyrene, a vinyl pyridine and 4-(vinyloxy) butyl stearate, a difunctional crosslinking agent and a free radical or a cationic initiator.
A shape memory polymer comprising a reaction product of styrene, a vinyl compound other than styrene, a multifunctional crosslinking agent, an initiator and a modifying polymer.
Dependencies are inferred from the claim text.