Hemocompatible coated polymer and related one-step methods
View Patent ↗A polymer with a hemocompatible film or coating is manufactured by a one-step method comprising polymerizing monomer droplets comprising at least one crosslinking agent to form a polymer and simultaneously coating the resulting polymer using at least one dispersing agent to thereby form a hemocompatible coated polymer.
1. A method of manufacturing a biocompatible coat polymer, said method comprising:
polymerizing monomer droplets comprising at least one cross agent to form a polymer and simultaneously coating said resultant polymer using a least one polymeric dispersing agent to thereby form a biocompatible coated polymer.
2. The method of claim 1 wherein said polymer is formed using a suspension polymerization procedure.
3. The method of claim 1 wherein said polymer is formed using emulsion polymerization procedure.
4. The method of claim 1 wherein said dispersing agent comprises a biocompatibilizing polymer.
5. The method of claim 4 wherein said biocompatibilizing polymer is poly(N-vinylpyrrolidinone).
6. The method of claim 4 wherein said biocompatibilizing polymer is poly(vinyl alcohol).
7. The method of claim 4 wherein said biocompatibilizing polymer is selected from a group consisting of poly(hydroxyethyl methacrylate), poly(hydroxyethyl acrylate), poly(dimethylaminoethyl methacrylate), salts of poly(acrylic acid), salts of poly(methacrylic acid), poly(diethylaminoethyl methacrylate), poly(hydroxypropyl methacrylate), poly(hydroxypropyl acrylate), poly(N-vinylpyrrolidinone) poly(vinyl alcohol) and mixtures thereof.
8. The method of claim 4 wherein said biocompatibilizing polymer becomes grafted to a surface of said hemocompatible coated polymer.
9. The method of claim 1 wherein said dispersing agent is selected from a group consisting of hydroxyethyl cellulose, hydroxypopyl cellulose, poly(hydroxyethyl methacrylate), poly(hydroxyethyl acrylate), poly(hydroxypropyl methacrylate), poly(hydroxypropyl acrylate), poly(dimethylaminoethyl methacrylate), poly(dimethylaminoethyl acrylate), poly(diethylaminoethyl methacrylate), poly(diethylaminoethyl acrylate), poly(vinyl alcohol), salts of poly(methacrylic acid), and salts of poly(acrylic acid) and mixtures thereof.
10. The method of claim 1 wherein said crosslinking agent comprises copolymers of divinylbenzene with comonomers being selected from a group consisting of styrene, ethylstyrene, acrylonitrile, butyl methacrylate, octyl methacrylate, butyl acrylate, octyl acrylate, cetyl methacrylate, cetyl acrylate, ethyl methacrylate, ethyl acrylate, vinyltoluene, vinylnaphthalene, vinylbenzyl alcohol, vinylformamide and mixtures thereof.
11. The method of claim 1 wherein said crosslinking agent is hydrophobic prior to coating and said external surface of said polymer is rendered hydrophilic and biocompatible after coating.
12. The method of claim 1 wherein said polymer is processed in non-pyrogenic water.
13. The method of claim 1 wherein said crosslinking agent is polymerized with at least one vinyl monomer.