Patent US3873643A successfully refreshed from Google Patents.
US3873643A
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Graft copolymers of polyolefins and cyclic acid and acid anhydride monomers
Assignee: Enron Chemical Co
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Filing: 1972-12-18
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Granted: 1975-03-25
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Expires: 1992-12-18
Abstract
Abstract Compositions of matter comprising graft copolymers of a polyolefin and at least one monomer of the class of polymerizable cyclic or polycyclic ethylenically unsaturated acids or acid anhydrides. The resulting copolymers exhibit superior performance in composites, blends and chemically reacted derivative products when compared with unmodified polyolefins and polyolefins grafted with other monomers.
Inventors
- 👤 William C L Wu
- 👤 Lawrence J Krebaum
- 👤 Jr John Machonis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
C; C08; C08F; C08F255/00; C08L; C08L51/00; C08L51/003
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
38 words
A GRAFT COPOLYMER OF ABOUT 70-99.95 WEIGHT PERCENT OF A POLYETHYLENE POLYMER AND ABOUT 30-0.05 WEIGHT PERCENT OF AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF POLYMERIZABLE CYCLIC ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS AND CARBOXYLIC ACID ANHYDRIDES.
Claim 2
Dependent Claim
38 words
A GRAFT COPOLYMER OF ABOUT 70-99.95 WEIGHT PERCENT OF A POLYETHYLENE POLYMER AND ABOUT 30-0.05 WEIGHT PERCENT OF AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF POLYMERIZABLE CYCLIC ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS AND CARBOXYLIC ACID ANHYDRIDES.
Claim 3
Dependent Claim
44 words
A graft copolymer of about 70-99.95 weight percent of a polyethylene polymer with a density of about 0.910-0.965 and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 4
Dependent Claim
44 words
A graft copolymer of about 70-99.95 weight percent of a polyethylene polymer with a density of about 0.910-0.965 and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 5
Dependent Claim
57 words
A graft copolymer of about 70-99.95 weighT percent of a linear copolymer of at least 60% ethylene and up to 40% of an alpha olefin containing 4 to 6 carbon atoms, and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 6
Dependent Claim
57 words
A graft copolymer of about 70-99.95 weighT percent of a linear copolymer of at least 60% ethylene and up to 40% of an alpha olefin containing 4 to 6 carbon atoms, and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 7
Dependent Claim
60 words
A graft copolymer of about 70-99.95 weight percent of a terpolymer of ethylene, propylene and up to 5% of a member of the group consisting of cyclic and acyclic aliphatic dienes and mixtures thereof, and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 8
Dependent Claim
60 words
A graft copolymer of about 70-99.95 weight percent of a terpolymer of ethylene, propylene and up to 5% of a member of the group consisting of cyclic and acyclic aliphatic dienes and mixtures thereof, and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 9
Dependent Claim
45 words
A graft copolymer of about 70-99.95 weight percent of a blend of ethylene polymers, ethylene-alpha-olefin copolymers and ethylene-propylene-diene terpolymers, and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 10
Dependent Claim
45 words
A graft copolymer of about 70-99.95 weight percent of a blend of ethylene polymers, ethylene-alpha-olefin copolymers and ethylene-propylene-diene terpolymers, and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 11
Dependent Claim
43 words
A graft copolymer of about 70-99.95 weight percent of a blend of ethylene polymers and ethylene-alpha-olefin copolymers, and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 12
Dependent Claim
43 words
A graft copolymer of about 70-99.95 weight percent of a blend of ethylene polymers and ethylene-alpha-olefin copolymers, and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 13
Dependent Claim
26 words
A graft copolymer of about 70-99.95 weight percent of a polyethylene polymer and about 30-0.05 weight percent of at least one monomer comprising 4-methylcyclohex-4-ene-1,2-dicarboxylic acid anhydride.
Claim 14
Dependent Claim
26 words
A graft copolymer of about 70-99.95 weight percent of a polyethylene polymer and about 30-0.05 weight percent of at least one monomer comprising 4-methylcyclohex-4-ene-1,2-dicarboxylic acid anhydride.
Claim 15
Dependent Claim
43 words
A graft copolymer of about 70-99.95 weight percent of a blend of ethylene polymers and ethylene-propylene-diene terpolymers, and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 16
Dependent Claim
43 words
A graft copolymer of about 70-99.95 weight percent of a blend of ethylene polymers and ethylene-propylene-diene terpolymers, and about 30-0.05 weight percent of at least one monomer selected from the group consisting of polymerizable cyclic ethylenically unsaturated carboxylic acids and carboxylic acid anhydrides.
Claim 17
Dependent Claim
25 words
A graft copolymer of about 70-99.95 weight percent of a polyethylene polymer and about 30-0.05 weight percent of at least one monomer comprising tetrahydrophthalic anhydride.
Claim 18
Dependent Claim
25 words
A graft copolymer of about 70-99.95 weight percent of a polyethylene polymer and about 30-0.05 weight percent of at least one monomer comprising tetrahydrophthalic anhydride.
Claim 19
Dependent Claim
24 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin and about 30-0.05 weight percent of at least one monomer comprising x-methylnorborn-5-ene-2,3-dicarboxylic anhydride.
Claim 20
Dependent Claim
24 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin and about 30-0.05 weight percent of at least one monomer comprising x-methylnorborn-5-ene-2,3-dicarboxylic anhydride.
Claim 21
Dependent Claim
24 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin and about 30-0.05 weight percent of at least one monomer comprising norborn-5-ene-2,3-dicarboxylic anhydride.
Claim 22
Dependent Claim
24 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin and about 30-0.05 weight percent of at least one monomer comprising norborn-5-ene-2,3-dicarboxylic anhydride.
Claim 23
Dependent Claim
25 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin and about 30-0.05 weight percent of at least one monomer comprising 2-cyclopentenyl acetic acid.
Claim 24
Dependent Claim
25 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin and about 30-0.05 weight percent of at least one monomer comprising 2-cyclopentenyl acetic acid.
Claim 25
Dependent Claim
26 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin comprising polyethylene and about 30-0.05 weight percent of at least one monomer comprising abietic acid.
Claim 26
Dependent Claim
26 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin comprising polyethylene and about 30-0.05 weight percent of at least one monomer comprising abietic acid.
Claim 27
Dependent Claim
24 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin and about 30-0.05 weight percent of at least one monomer comprising maleo-pimaric acid.
Claim 28
Dependent Claim
24 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin and about 30-0.05 weight percent of at least one monomer comprising maleo-pimaric acid.
Claim 29
Dependent Claim
24 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin and about 30-0.05 weight percent of at least one monomer comprising bicyclo(2.2.2)oct-5-ene-2,3-dicarboxylic anhydride.
Claim 30
Dependent Claim
24 words
A graft copolymer of about 70-99.95 weight percent of a polyolefin and about 30-0.05 weight percent of at least one monomer comprising bicyclo(2.2.2)oct-5-ene-2,3-dicarboxylic anhydride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |