Graft polymers of polymerizable monomers and olefin polymers
First Claim
1. A vinyl halide polyolefin graft polymer wherein the vinyl halide alone or in combination with up to 50 percent by weight based on the total weight of monomer of an ethylenically unsaturated compound copolymerizable therewith, and in the liquid state, is polymerized with a single polymer of an aliphatic hydrocarbon monoolefin of 2 to about 8 carbon atoms which is in the solid state in particulate form and is substantially insoluble in the monomer but absorbs a substantial amount of the monomer, and remains as a free flowing particle that does not agglomerate or fuse, wherein the proportion of monoolefin polymer in said graft polymer is about 20 to about 80 weight percent based on the weight of said monomer.
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Abstract
Graft polymers are prepared by reacting an ethylenically unsaturated polymerizable monomer with a polymer of an olefin of 2 to about 8 carbon atoms in a process wherein the olefin polymer is substantially insoluble in the monomer but is capable of absorbing the monomer. In a preferred aspect, a vinyl halide polyolefin graft polymer is produced by reacting a solid polyolefin particle with a vinyl halide monomer in which the polyolefin is substantially insoluble, but is capable of absorbing the monomer. The solid particles can be contacted with the monomer in one step or in stages. When the stage-wise reaction is continued until the proportion of polyolefin in the polymer product is about 2 to about 20 weight percent, the resulting product can be formed to a transparent or translucent article. When a small proportion of solid polyolefin is employed in the polymerization process, both a graft polymer and a polymer of the unsaturated monomer are simultaneously produced in the same reactor and can be readily mechanically separated into the individual products.
30 Citations
61 Claims
- 1. A vinyl halide polyolefin graft polymer wherein the vinyl halide alone or in combination with up to 50 percent by weight based on the total weight of monomer of an ethylenically unsaturated compound copolymerizable therewith, and in the liquid state, is polymerized with a single polymer of an aliphatic hydrocarbon monoolefin of 2 to about 8 carbon atoms which is in the solid state in particulate form and is substantially insoluble in the monomer but absorbs a substantial amount of the monomer, and remains as a free flowing particle that does not agglomerate or fuse, wherein the proportion of monoolefin polymer in said graft polymer is about 20 to about 80 weight percent based on the weight of said monomer.
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36. A process for preparing a vinyl halide polyolefin graft copolymer which comprises:
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(1) mixing a monomer component comprising vinyl halide alone or in combination with up to 50 percent by weight based on the total weight of monomer of an ethylenically unsaturated monomer copolymerizable therewith, in the liquid state, with a solid polyolefin comprising a single polymer of an aliphatic hydrocarbon monoolefin of 2 to about 8 carbon atoms, which polymer is in particulate form and substantially insoluble in the monomer or monomers, but absorbs a substantial amount of the monomer or monomers, and remains as a free flowing particle that does not agglomerate or fuse; and
an initiator, and(2) heating the resulting mixture at a temperature in the range of about 30 to about 90 degrees Celsius. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44)
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- 45. A process for producing a vinyl halide polyolefin graft copolymer which comprises reacting vinyl halide alone or in combination with up to 50 percent by weight based on the total weight of monomer of an ethylenically unsaturated monomer copolymerizable therewith, in the liquid state with a solid polyolefin of an aliphatic hydrocarbon monoolefin of 2 to about 8 carbon atoms in particulate form, that is substantially insoluble in the monomer but absorbs a substantial amount of the monomer, and remains as a free flowing particle that does not agglomerate or fuse, in the presence of an initiator for the reaction.
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55. A process for preparing a vinyl halide polyolefin graft copolymer which comprises:
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(1) mixing a monomer component comprising vinyl halide alone or in combination with up to 50 percent by weight based on the total weight of monomer of an ethylenically unsaturated monomer copolymerizable therewith, in the liquid state, with a solid polyolefin comprising a single polymer of an aliphatic hydrocarbon monoolefin of 2 to about 8 carbon atoms, wherein the polyolefin is in particulate form and substantially insoluble in the monomer or monomers, but absorbs a substantial amount of the monomer or monomers, and remains as a free flowing particle that does not agglomerate or fuse; and
an initiator, and(2) heating the resulting mixture at a temperature in the range of about 30 to about 90 degrees Celsius, (3) mixing additional monomer component with the product of step (2), and (4) heating the resulting mixture at a temperature in the range of about 30 to about 90 degrees Celsius. - View Dependent Claims (56, 57, 58, 59, 60, 61)
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Specification