Shape memory cyanate ester copolymers

A method for making shape memory polymer comprising mixing a monofunctional cyanate ester monomer with at least one molecule terminated with a moiety containing an active hydrogen having the structure

• R2HX—R1—YHR3
• Wherein X and Y may be N, O, or S and R1 is H or a CaHb aliphatic or aromatic polymer wherein a and b are non-zero positive whole numbers, and R2 and R3 may be nothing, H, or a CsHt aliphatic or aromatic polymer wherein s and t are non-zero, positive, whole numbers, until the mixture reaches equilibrium which is then further mixed with a difunctional cyanate ester resin until the mixture reaches equilibrium, then curing the mixture in a mold of a desired geometric size and shape.

Shape memory polymer prepared from a reaction mixture comprising a monofunctional cyanate ester monomer and at least one amine terminated molecule having the structure

• R4HX—R8—YHR7
• Wherein X and Y can be the same or different and may be N, O, or S and R4, and R7 can be the same or different and may be nothing, H, or a CsHt aliphatic or aromatic polymer wherein s and t are non-zero, positive whole numbers, and R8 has the structure
• wherein n is a non-zero, positive whole number of at least 1, and wherein m can be zero or a positive, whole number, and wherein R5 and R6 can be the same or different and are CqHt aliphatic or aromatic polymer wherein q can be any non-zero positive whole number between 1 and 10, which is then further mixed with a difunctional cyanate ester resin.

A method for making shape memory polymer comprising mixing a monofunctional cyanate ester monomer with at least one molecule terminated with a moiety containing an active hydrogen having the structure

• R4HX—R8—YHR7
• Wherein X and Y can be the same or different and may be N, O, or S and R4 and R7 can be the same or different and are nothing, H, or a CsHt aliphatic or aromatic polymer wherein s and t are non-zero, positive whole numbers, and R8 has the structure
• wherein n is a whole number of at least 1 and wherein m can be zero or a positive whole number and wherein R5 and R6 can be the same or different and may be a CqHt aliphatic or aromatic polymer wherein q can be any non-zero positive whole number between 1 and 10, until the mixture reaches equilibrium which is then further mixed with a difunctional cyanate ester resin until the mixture reaches equilibrium, then curing the mixture in a mold of a desired geometric size and shape.