US4008095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paving compositions and method for producing the same
Assignee: Nichireki Kagaku Kogyo Co Ltd
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Filing: 1974-12-09
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Granted: 1977-02-15
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Expires: 1994-12-09
Abstract
Abstract A paving composition comprising asphalt and micro-granular coal which are uniformly combined integrally with each other without thermal decomposition of said coal and a method for producing a paving composition which comprises triturating a mixture of asphalt and coal at a temperature below the thermal decomposition point of the coal thereby to reduce the diameter of the resulting micro-granular coal to 1 to 100μ and, at the same time, to achieve the uniform integral combination of asphalt and coal. Thereby, there is provided a paving composition which is excellent in thermal stability, weather resistance, adhesive property, sticking strength, viscoelasticity and workability. Moreover, besides the main components, asphalt and coal, various modifying agents or additives may be further incorporated so that the properties of the paving composition can be further improved.
Inventors
- 👤 Fumiaki Fukushima
- 👤 Hiroshi Nozaki
- 👤 Keisuke Tanaka
- 👤 Takashi Kanagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:55
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/02; E01C19/10; E01C19/1013; E01C19/104; E01C19/1045; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08L; C08L95/00; E01C7/00; E01C7/08; E01C7/18; E01C7/182; E01C7/26; E01C7/265
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
153 words
A paving composition, consisting essentially of: from 3 to 50% by weight of microgranular undigested coal particles having a particle size in the range of 1 to 30μ; the balance is a bituminous material which is liquid at a temperature below about 200° C. and consisting principally of asphalt, said asphalt being at least about 50% by weight of the total weight of the composition; said composition being free of mineral aggregate particles, said coal particles being uniformly mixed with and dispersed in the bituminous material, said composition having been prepared by simultaneous trituration of said coal particles and said bituminous material at a temperature below about 200° C. by flowing a mixture of said bituminous material and coal particles between the opposing surfaces of a pair of closely spaced triturating discs, one of which is rotating relative to the other, to subject the mixture to simultaneous compression, shear, friction and centrifugal forces.
Claim 2
Dependent Claim
153 words
A paving composition, consisting essentially of: from 3 to 50% by weight of microgranular undigested coal particles having a particle size in the range of 1 to 30μ; the balance is a bituminous material which is liquid at a temperature below about 200° C. and consisting principally of asphalt, said asphalt being at least about 50% by weight of the total weight of the composition; said composition being free of mineral aggregate particles, said coal particles being uniformly mixed with and dispersed in the bituminous material, said composition having been prepared by simultaneous trituration of said coal particles and said bituminous material at a temperature below about 200° C. by flowing a mixture of said bituminous material and coal particles between the opposing surfaces of a pair of closely spaced triturating discs, one of which is rotating relative to the other, to subject the mixture to simultaneous compression, shear, friction and centrifugal forces.
Claim 3
Dependent Claim
206 words
A paving composition as claimed in claim 1, wherein the bituminous material contains at least one additive selected from the group consisting of (1) tars selected from the group consisting of coal tar and oil gas tar; (2) pitches selected from the group consisting of tar pitch, styrene tar pitch, fatty acid pitch and tall oil pitch; (3) natural rubber and synthetic rubber selected from the group consisting of butadiene-styrene rubber, butadiene-acrylonitrile rubber, chloroprene rubber, polyisobutylene rubber, polyisoprene rubber, polybutadiene rubber and butyl rubber; (4) fats and oils selected from the group consisting of bean oil, linseed oil, fish oil and whale oil; (5) synthetic resins selected from the group consisting of polyvinyl chloride, polyethylene, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, polypropylene and propylene-ethylene copolymer; (6) natural resins selected from the group consisting of turpentine and rosin; (7) petroleum resins; (8) natural resin oils selected from the group consisting of pine root oil and turpentine oil; (9) coal oils selected from the group consisting of creosote and anthracene; (10) chlorine-containing organic solvents selected from the group consisting of α-chloronaphthalene, tetrachloroethylene, trichloroethylene, methylene chloride, dichloropropane and carbon tetrachloride; (11) tetrahydronaphthalene; and (12) metallic soaps selected from the group consisting of Ca, Mg, Zn, Al and Fe soaps.
Claim 4
Dependent Claim
30 words
A paving composition as claimed in claim 2, wherein said tar is incorporated in an amount of 3 to 30% by weight, based on the weight of the paving composition.
Claim 5
Dependent Claim
30 words
A paving composition as claimed in claim 2, wherein said pitch is incorporated in an amount of 5 to 20% by weight, based on the weight of the paving composition.
Claim 6
Dependent Claim
30 words
A paving composition as claimed in claim 2, wherein said rubber is incorporated in an amount of 0.5 to 5% by weight, based on the weight of the paving composition.
Claim 7
Dependent Claim
32 words
A paving composition as claimed in claim 2, wherein said fat and oil is incorporated in an amount of 2 to 10% by weight, based on the weight of the paving composition.
Claim 8
Dependent Claim
31 words
A paving composition as claimed in claim 2, wherein said synthetic resin is incorporated in an amount of 0.5 to 10% by weight, based on the weight of the paving composition.
Claim 9
Dependent Claim
34 words
A paving composition as claimed in claim 2, wherein said natural resin or petroleum resin is incorporated in an amount of 1 to 10% by weight, based on the weight of the paving composition.
Claim 10
Dependent Claim
32 words
A paving composition as claimed in claim 2, wherein said natural resin oil is incorporated in an amount of 1 to 10% by weight, based on the weight of the paving composition.
Claim 11
Dependent Claim
31 words
A paving composition as claimed in claim 2, wherein said coal oil is incorporated in an amount of 3 to 15% by weight, based on the weight of the paving composition.
Claim 12
Dependent Claim
32 words
A paving composition as claimed in claim 2, wherein said chlorine-containing organic solvent is incorporated in an amount of 1 to 30% by weight, based on the weight of the paving composition.
Claim 13
Dependent Claim
30 words
A paving composition as claimed in claim 2, wherein said tetrahydronaphthalene is incorporated in an amount of 0.5 to 8% by weight, based on the weight of the paving composition.
Claim 14
Dependent Claim
31 words
A paving composition as claimed in claim 2, wherein said metallic soap is incorporated in an amount of 0.1 to 2% by weight, based on the weight of the paving composition.
Claim 15
Independent Claim
149 words
A method for producing a paving composition, which comprises the steps of 1. feeding into the narrow gap between a pair of opposed, closely spaced triturating discs, one of which is rotating relative to the other at a high speed, a starting mixture free of particles of mineral aggregate and consisting essentially of a. from 3 to 50% by weight of undigested coal particles, and b. the balance is a liquid bituminous material consisting principally of asphalt, said asphalt being at least about 50% by weight of the total weight of said starting mixture, 2. triturating said starting mixture by subjecting same to simultaneous compression, shear, friction and centrifugal forces between said discs at a temperature below about 200° C. to subdivide the coal particles to a size in the range of 1 to 30μ and simultaneously uniformly mixing and dispersing the coal particles in the liquid bituminous material.
Claim 16
Independent Claim
149 words
A method for producing a paving composition, which comprises the steps of 1. feeding into the narrow gap between a pair of opposed, closely spaced triturating discs, one of which is rotating relative to the other at a high speed, a starting mixture free of particles of mineral aggregate and consisting essentially of a. from 3 to 50% by weight of undigested coal particles, and b. the balance is a liquid bituminous material consisting principally of asphalt, said asphalt being at least about 50% by weight of the total weight of said starting mixture, 2. triturating said starting mixture by subjecting same to simultaneous compression, shear, friction and centrifugal forces between said discs at a temperature below about 200° C. to subdivide the coal particles to a size in the range of 1 to 30μ and simultaneously uniformly mixing and dispersing the coal particles in the liquid bituminous material.
Claim 17
Dependent Claim
211 words
A method for producing a paving composition as claimed in claim 3, wherein said bituminous material further contains at least one additive selected from the group consisting of (1) tars selected from the group consisting of coal tar and oil gas tar; (2) pitches selected from the group consisting of tar pitch, styrene tar pitch, fatty acid pitch and tall oil pitch; (3) natural rubber and synthetic rubber selected from the group consisting of butadiene-styrene rubber, butadiene-acrylonitrile rubber, chloroprene rubber, polyisobutylene rubber, polyisoprene rubber, polybutadiene rubber and butyl rubber; (4) fats and oils selected from the group consisting of bean oil, linseed oil, fish oil and whale oil; (5) synthetic resins selected from the group consisting of polyvinyl chloride, polyethylene, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer, polypropylene and propylene-ethylene copolymer; (6) natural resins selected from the group consisting of turpentine and rosin; (7) petroleum resin; (8) natural resin oils selected from the group consisting of pine root oil and turpentine oil; (9) coal oils selected from the group consisting of creosote and anthracene; (10) chlorine-containing organic solvents selected from the group consisting of α-chloronaphthalene, tetrachloroethylene, trichloroethylene, methylene chloride, dichloropropane and carbon tetrachloride; (11) tetrahydronaphthalene; and (12) metallic soaps selected from the group consisting of Ca, Mg, Zn, Al and Fe soaps.
Claim 18
Independent Claim
135 words
A method for producing a paving composition, which comprises the steps of: 1. feeding into the narrow gap between a pair of opposed closely spaced triturating discs which are rotating relative to each other at a high speed, a mixture consisting essentially of: a. an asphalt-free oil, b. undigested coal particles, the coal particles being the sole particulate material in the mixture, 2. triturating the mixture by subjecting same to simultaneous compression, shear, friction and centrifugal forces between said discs, at a temperature below about 200° C., to subdivide the coal particles to a size in the range of 1 to 30μ and simultaneously uniformly mixing and dispersing the coal particles in the oil, and 3. adding asphalt to the mixture to obtain a composition containing from 3 to 50% by weight of coal particles.
Claim 19
Independent Claim
135 words
A method for producing a paving composition, which comprises the steps of: 1. feeding into the narrow gap between a pair of opposed closely spaced triturating discs which are rotating relative to each other at a high speed, a mixture consisting essentially of: a. an asphalt-free oil, b. undigested coal particles, the coal particles being the sole particulate material in the mixture, 2. triturating the mixture by subjecting same to simultaneous compression, shear, friction and centrifugal forces between said discs, at a temperature below about 200° C., to subdivide the coal particles to a size in the range of 1 to 30μ and simultaneously uniformly mixing and dispersing the coal particles in the oil, and 3. adding asphalt to the mixture to obtain a composition containing from 3 to 50% by weight of coal particles.
References Cited (Backward Citations)
US2037147A
Cited
US2113794A
Cited
US2188204A
Cited
US2629669A
Cited
US2701217A
Cited
US2888357A
Cited
US2877128A
Cited
US3091543A
Cited
US3085892A
Cited
US3243311A
Cited
US3264127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |