Non aqueous polymeric dispersion of vinyl monomers produced from polystyrene pyrolysis oil
OwnerJuan Pedro PÉREZ VALENCIA, Enrique DOMINGUEZ RAMOSinventors
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Abstract
This invention relates to a polymer polyol comprising: (a) a dispersed phase formed by polymeric particles which are the polymerization product of a polystyrene pyrolysis oil, and acrylonitrile; or alternatively, of a polystyrene pyrolysis oil, acrylonitrile, and styrene monomer; and (b) a continuous phase comprising (b1) a polyol, to compositions comprising or made from the polymer polyol, such as polyurethane (foams). The invention also relates to a process for preparing polymer polyols using pyrolysis oil of polystyrene; as well as processes for the preparation of the compositions comprising or made from the polymer polyol.
Claims14
A polymer polyol comprising:
- (a) a dispersed phase formed by polymeric particles (a1) which are a polymerization product of a polystyrene pyrolysis oil and an acrylonitrile;
- or alternatively, of a polystyrene pyrolysis oil, an acrylonitrile, and a styrene monomer;
- and
- (b) a continuous phase comprising:
- (b1) a polyol;
- and
- (b2) optionally, one or more of the compounds selected from the group consisting of macromer;
- dispersant;
- 2,4-diphenyl-1-butene and isomers thereof;
- 2,4,6-triphenyl-1-hexene and isomers thereof;
- 2-phenylnaphthalene;
- and poly-aromatic compounds;
- wherein the polystyrene pyrolysis oil comprises from 50% to 98% by weight of the styrene monomer,
- wherein:
- the polymeric particles (a1) comprise:
- monomeric units of styrene, acrylonitrile, and alpha-methyl styrene;
- and
- one or more monomeric units selected from the group consisting of propenyl benzene;
- divinylbenzene;
- phenylacetylene;
- methyl butenes;
- methyl pentenes;
- isobutene;
- pentenes;
- hexene;
- heptenes;
- octenes, cyclopentadiene;
- allylbenzene;
- methyl-styrene other than alpha-methyl-styrene;
- ethyl-styrene;
- stilbene;
- 2,4-diphenyl-1-butene and isomers thereof;
- 1,4-diphenyl-1,3-butadiene and isomers thereof;
- and 2,4,6-triphenyl-1-hexene and isomers thereof.
A process for the preparation of a polymer polyol comprising:
- (a) a dispersed phase formed by polymeric particles (a1);
- and
- (b) a continuous phase comprising a polyol (b1);
- wherein:
- the process comprises:
- (i) providing polymeric particles dispersed in a continuous polyol phase by polymerization of a polystyrene pyrolysis oil and an acrylonitrile;
- or alternatively by polymerization of a polystyrene pyrolysis oil, an acrylonitrile, and a styrene monomer;
- and optionally one or more monomeric units selected from the group consisting of propenyl benzene;
- divinylbenzene;
- phenylacetylene;
- methyl butenes;
- methyl pentenes;
- isobutene;
- pentenes;
- hexene;
- heptenes;
- octenes, cyclopentadiene;
- allylbenzene;
- methyl-styrene other than alpha-methyl-styrene;
- ethyl-styrene;
- stilbene;
- 2,4-diphenyl-1-butene and isomers thereof;
- 1,4-diphenyl-1,3-butadiene and isomers thereof;
- and 2,4,6-triphenyl-1-hexene and isomers thereof;
- in a continuous polyol phase in the presence of at least one radical initiator;
- wherein the polystyrene pyrolysis oil comprises from 50% to 98% by weight of styrene monomer.
Dependencies are inferred from the claim text.