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US4000095A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for preparing materials containing minerals and synthetic substances and materials manufactured according to said method and objects consisting of said materials

Assignee: Hollandsche Wegenbouw Zanen BV
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Filing: 1974-11-19
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Granted: 1976-12-28
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Expires: 1994-11-19
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Abstract

Abstract A building or road construction material, and method for its formation, which comprises (1) mineral components such as sand, gravel, diminuted glass, etc., (2) polymeric components such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, etc., and (3) hydrocarbon-containing component such as tar pitch, bituminous products, petroleum coke, etc. combined in a special proportion to produce materials with improved properties such as a particularly large Marshall stability, a large compression strength and an excellent fluting, tracking and crack resistance. According to the method, the mineral component is first heated to a temperature of at least 180° C and then mixed with the polymeric component in diminutive form, in which the percentage by weight of polymeric components amounts to at most 100 percent, calculated on the amount by weight of the hydrocarbon component, and then to this resulting mixture is added the hydrocarbon component, provided that, if a bituminuous product is used as the hydrocarbon component, the percentage by weight of the polymeric component should in addition amount to at least 20 percent by weight, calculated on the amount of bitumen. The final mixture is then allowed to cool to form the desired product.

Inventors

  • 👤 Antoon J. Van Den Berg

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 01:53
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; C08; C08L; C08L95/00; E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; E01C7/182; E01C7/26; E01C7/265; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 94 words
A method for preparing a material consisting essentially of a mineral component, a thermoplastic polymeric component, and bitumen, said method comprising sequentially: 1. heating the mineral component to a temperature of at least 180° C; 2. mixing with the heated mineral component of (1) the polymeric component, said polymeric component being in diminutive form, said polymeric component being at least 20wt.% and at most 100wt.% of the weight of the bitumen; 3. mixing with said mixture of (2) the bitumen which has been previously heated; and 4. allowing the material product of (3) cool.
Claim 2
Independent Claim 94 words
A method for preparing a material consisting essentially of a mineral component, a thermoplastic polymeric component, and bitumen, said method comprising sequentially: 1. heating the mineral component to a temperature of at least 180° C; 2. mixing with the heated mineral component of (1) the polymeric component, said polymeric component being in diminutive form, said polymeric component being at least 20wt.% and at most 100wt.% of the weight of the bitumen; 3. mixing with said mixture of (2) the bitumen which has been previously heated; and 4. allowing the material product of (3) cool.
Claim 3
Dependent Claim 38 words
A method according to claim 1, wherein said diminutive polymeric component comprises a mixture of diminutive thermoplastic polymers selected from the group of diminutive polyethylene, polypropylene, polybutylene, polyvinyl chloride, polyacrylates, polyamides, polyesters, polyethylene imines, polystyrene, and copolymers thereof.
Claim 4
Dependent Claim 24 words
A method according to claim 2, wherein said diminutive polymeric component is selected from the group of industrial waste plastics and domestic waste plastics.
Claim 5
Dependent Claim 28 words
A method according to claim 1, wherein said diminutive polymeric component is used in the form of chips, granules, grains, coarse millings, shreds, cut pieces, or broken pieces.
Claim 6
Dependent Claim 32 words
A method according to claim 1, wherein said diminutive polymeric component is used in an amount of 0.3 to 10% by weight, calculated on the amount by weight of the mineral components.
Claim 7
Dependent Claim 19 words
A method according to claim 1, wherein said mineral component is selected from sand, gravel, diminuted glass and slags.
Claim 8
Dependent Claim 24 words
A method according to claim 6, wherein said mineral component is diminutive glass or slages originating from blast furnaces, metallurgical works and refuse incinerators.
Claim 9
Dependent Claim 30 words
A method according to claim 5, wherein said bitumen is used in an amount of 3 to 10% by weight, calculated on the amount by weight of said mineral component.
Claim 10
Dependent Claim 68 words
A method according to claim 1, wherein said mineral component comprises sand or a mixture of sand and gravel; said polymeric component comprises diminutive polyethylene in an amount of 1 to 3% by weight, calculated on the amount by weight of said mineral component; and said bitumen is used in an amount of 5 to 8% by weight, calculated on the amount by weight of said mineral component.
Claim 11
Dependent Claim 13 words
A method according to claim 1, wherein pigments are added to said material.
Claim 12
Dependent Claim 14 words
A road surface construction comprising the material prepared by the method of claim 1.
Claim 13
Dependent Claim 14 words
A road surface construction comprising the material prepared by the method of claim 8.
Claim 14
Dependent Claim 14 words
A road surface construction comprising the material prepared by the method of claim 9.

References Cited (Backward Citations)

US3112681A Cited
US3336252A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-12-28 1980-06-28 1980-12-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-12-28 1984-06-28 1984-12-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-12-28 1988-06-28 1988-12-28 $7700.00 Window Closed / Lapsed

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