Process for the living radical polymerization of chlorine containing monomers
AssigneeUniversity of Pennsylvania
InventorsVirgil Percec, Alex Asandei
Life of this patent
Estimating the term…
Abstract
A process for the preparation of polyvinyl chloride (PVC) with controlled molecular weight and molecular weight distribution is disclosed. The polymerization reaction can be initiated by various organic halide initiators in conjunction with a metal catalyst and an optional ligand in organic solvents or water and in the presence of an optional comonomer. The polymerization process provides PVC with a controlled molecular weight and narrow molecular weight distribution. The chlorine containing polymers compositions are useful as, among others, viscosity modifiers, impact modifiers and compatibilizers.
Claims65
A polymeric composition comprising:
- a vinyl chlorine polymer derived from a living radical polymerization of a vinyl chloride monomer or a structurally-related derivative thereof in the presence of an initiator, a metal catalyst, an optional ligand and an optional solvent or water.
A polymeric composition comprising:
- a vinyl chloride polymer derived from a radical polymerization of a vinyl chloride monomer or a structurally-related derivative in the presence of an initiator, a metal catalyst, and optionally ligand and optionally a solvent or water.
A process for the preparation of a chlorine containing polymer comprising the steps of:
- forming a mixture comprising:
- a vinyl chloride monomer or a structurally-related derivative;
- and
- optionally, a comonomer, in the presence of an initiator, a metal catalyst;
- an optional ligand;
- and optionally, a solvent or water;
- and
- polymerizing said vinyl chloride monomer to form a polymer or copolymer by a radical or a living radical process.
A polymeric composition comprising:
- a copolymer derived from a radical or a living radical polymerization of vinyl chloride monomer or a structurally-related derivative and a comonomer known to copolymerize with vinyl chloride via a radical mechanism in the presence of an initiator, a metal catalyst, and optionally a ligand and optionally a solvent or water.
Dependencies are inferred from the claim text.