Patent US4550130A successfully refreshed from Google Patents.
US4550130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite material with improved properties
Assignee: Mitsubishi Chemical Corp
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Filing: 1984-02-28
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Granted: 1985-10-29
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Expires: 2004-02-28
Abstract
Abstract A polyolefin resin composition comprising a polyolefin modified with an unsaturated carboxylic acid, at least one member selected from the group consisting of polyepoxides, polyisocyanates, and polyamines, and a reinforcement.
Inventors
- 👤 Kazuo Kishida
- 👤 Isao Sasaki
- 👤 Hiroshi Mori
- 👤 Yasuaki Ii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:03
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6204; C08L; C08L51/00; C08L51/06
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
196 words
A polyolefin resin composition comprising: (a) a polyolefin selected from the group consisting of polyethylene, polypropylene, poly(4-methylpentene-1), ethylene/vinyl acetate copolymer, ethylene/ethylacrylate copolymer, and ethylene/propylene/diene copolymer modified with from 0.05 to 0.8 parts by weight per 100 parts by weight of the polyolefin, of a grafted unsaturated carboxylic acid; (b) no more than 10 weight %, based on the weight of said modified polyolefin, of a polyfunctional epoxide, polyfunctional amine, polyfunctional isocyanate or mixtures thereof with the proviso that the amount of any given polyfunctional agent is within the range of 0.03 to 5 wt. %; and (c) from 5 to 400 wt. % of a reinforcing material, based on the weight of the modified polyolefin, of (i) a fibrous material selected from the group of glass fibers, carbon fibers, graphite fibers, aromatic polyamide fibers, silicon carbide fibers, polysulfone fibers, polyether ketone fibers, alumina fibers, potassium titanate fibers, asbestos fibers, boron fibers or metal fibers; or (ii) powdery or flaky materials selected from the group consisting of glass flakes, talc, mica, kaolin, clay, diatomaceous earth, calcium carbonate, calcium sulfate, magnesium oxide, carbon black, titanium oxide, powdered metal, alumina, graphite, white carbon, wollastonite, molybdenum disulfide and tungsten disulfide.
Claim 2
Dependent Claim
196 words
A polyolefin resin composition comprising: (a) a polyolefin selected from the group consisting of polyethylene, polypropylene, poly(4-methylpentene-1), ethylene/vinyl acetate copolymer, ethylene/ethylacrylate copolymer, and ethylene/propylene/diene copolymer modified with from 0.05 to 0.8 parts by weight per 100 parts by weight of the polyolefin, of a grafted unsaturated carboxylic acid; (b) no more than 10 weight %, based on the weight of said modified polyolefin, of a polyfunctional epoxide, polyfunctional amine, polyfunctional isocyanate or mixtures thereof with the proviso that the amount of any given polyfunctional agent is within the range of 0.03 to 5 wt. %; and (c) from 5 to 400 wt. % of a reinforcing material, based on the weight of the modified polyolefin, of (i) a fibrous material selected from the group of glass fibers, carbon fibers, graphite fibers, aromatic polyamide fibers, silicon carbide fibers, polysulfone fibers, polyether ketone fibers, alumina fibers, potassium titanate fibers, asbestos fibers, boron fibers or metal fibers; or (ii) powdery or flaky materials selected from the group consisting of glass flakes, talc, mica, kaolin, clay, diatomaceous earth, calcium carbonate, calcium sulfate, magnesium oxide, carbon black, titanium oxide, powdered metal, alumina, graphite, white carbon, wollastonite, molybdenum disulfide and tungsten disulfide.
Claim 3
Dependent Claim
58 words
The composition of claim 1, wherein the modified polyolefin is prepared by reacting a polyolefin and said unsaturated carboxylic acid in the presence of at least one catalyst selected from the group consisting of ketal peroxides and dialkyl peroxides which have a decomposition temperature necessary for attaining the half life of 10 hours of at least 80° C.
Claim 4
Dependent Claim
66 words
The composition of claim 1, wherein the modified polyolefin is prepared by reacting a polyolefin and said unsaturated carboxylic acid in the presence of a mixed catalyst system comprising at least one member selected from the group consisting of ketal peroxides and dialkyl peroxides which have a decomposition temperature necessary for obtaining the half life of 10 hours of at least 80° C., and benzoyl peroxide.
Claim 5
Dependent Claim
40 words
The polyolefin resin composition of claim 3, wherein the weight ratio of said at least one member selected from the group consisting of ketal peroxides and dialkyl peroxides to benzoyl peroxide in the mixed catalyst system is 1/10 to 1/1.
Claim 6
Dependent Claim
33 words
The polyolefin resin composition of claim 1, wherein the modified polyolefin is prepared by heat-melting the unsaturated carboxylic acid, the polyolefin, and the polyfunctional compound in the presence of a peroxide type catalyst.
Claim 7
Dependent Claim
24 words
The composition of claim 5, wherein the modified polyolefin is prepared by extruding the reactants which form the same from an extruder type reactor.
Claim 8
Dependent Claim
40 words
The polyolefin resin composition of claim 2, wherein the ketal or dialkyl peroxide catalyst is at least one member selected from the group consisting of 1,1-bis(t-butylperoxy)-3,3,5-trimethylcyclohexane, 1,1-bis(t-butylperoxy)cyclohexane, n-butyl 4,4-bis(t-butylperoxy)valerate, 2,2-bis(t-butylperoxy)butane, 2,2-bis(t-butylperoxy)octane, di-t-butyl peroxide, t-butylcumyl peroxide, dicumyl peroxide ˜,˜'-bis(t-butylperoxyisopropyl)benzene, and 2,5-dimethyl-2,5-di(t-butylperoxy)hexyne-3.
Claim 9
Dependent Claim
22 words
The composition of claim 3, wherein the modified polyolefin is in the form of spherulites of a size of 50μ or less.
Claim 10
Dependent Claim
18 words
The composition of claim 1, wherein the polyfunctional compound is a polyepoxide having an isocyanurate or cyanurate ring.
Claim 11
Dependent Claim
54 words
The composition of claim 1, wherein the improvement ratio of the strength of a molded product prepared from a composition consisting of the modified polyolefin and said reinforcing material to that of a molded product prepared from a polyolefin resin composition consisting of an unmodified polyolefin and said reinforcing material is at least 1.5.
Claim 12
Dependent Claim
32 words
The composition of claim 1, wherein said polyfunctional epoxide is a bisphenol A epoxy compound, a bisphenol F epoxy compound, an aliphatic ether epoxy compound, a novolak epoxide or an isocyanurate epoxide.
Claim 13
Dependent Claim
30 words
The composition of claim 1, wherein said polyfunctional amine is hexamethylene diamine, tetramethylene diamine, methaxylene diamine, diamino diphenylmethane, diaminodiphenyl sulfone, 3,3'-diaminobenzidine, isophthalic acid hydrazide, diamino diphenyl ether, nanomethylenediamine or diethylenetetramine.
Claim 14
Dependent Claim
32 words
The composition of claim 1, wherein said polyfunctional isocyanate is tetramethylene diisocyanate, toluidine diisocyanate, diphenylmethane diisocyanate, naphthalene diisocyanate or a polyisocyanate obtained by extending a diisocyanate compound with a chain extending agent.
Claim 15
Dependent Claim
150 words
A polyolefin resin composition comprising: (a) a polyolefin selected from the group consisting of polyethylene, polypropylene, poly(4-methylpentene-1), ethylene/vinyl acetate copolymer, ethylene/ethylacrylate copolymer, and ethylene/propylene/diene copolymer modified with from 0.05 to 0.8 parts by weight per 100 parts by weight of the polyolefin, of a grafted unsaturated carboxylic acid; (b) no more than 10 weight %, based on the weight of said modified polyolefin, of a polyfunctional epoxide, polyfunctional amine, polyfunctional isocyanate or mixtures thereof with the proviso that the amount of any given polyfunctional agent is within the range of 0.03 to 5 wt. %; and (c) from 5 to 400 wt. % of a reinforcing material, based on the weight of the modified polyolefin, of (i) an inorganic fiber or (ii) at least one member selected from the group consisting of glass flakes, talc, calcium carbonate, magnesium oxide, clay, mica and carbon black or (iii) an aromatic polyamide fiber.
Claim 16
Dependent Claim
150 words
A polyolefin resin composition comprising: (a) a polyolefin selected from the group consisting of polyethylene, polypropylene, poly(4-methylpentene-1), ethylene/vinyl acetate copolymer, ethylene/ethylacrylate copolymer, and ethylene/propylene/diene copolymer modified with from 0.05 to 0.8 parts by weight per 100 parts by weight of the polyolefin, of a grafted unsaturated carboxylic acid; (b) no more than 10 weight %, based on the weight of said modified polyolefin, of a polyfunctional epoxide, polyfunctional amine, polyfunctional isocyanate or mixtures thereof with the proviso that the amount of any given polyfunctional agent is within the range of 0.03 to 5 wt. %; and (c) from 5 to 400 wt. % of a reinforcing material, based on the weight of the modified polyolefin, of (i) an inorganic fiber or (ii) at least one member selected from the group consisting of glass flakes, talc, calcium carbonate, magnesium oxide, clay, mica and carbon black or (iii) an aromatic polyamide fiber.
Claim 17
Dependent Claim
12 words
The composition of claim 14, wherein the reinforcing material is carbon fiber.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-28 | 1989-04-29 | 1989-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-28 | 1993-04-29 | 1993-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-28 | 1997-04-29 | 1997-10-29 | $7700.00 | Window Closed / Lapsed |