US5801204A
Expired / Lapsed
US
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Method of reclaiming waste plastic material and a compound including waste plastic material
Assignee: BASF Corp
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Filing: 1995-07-03
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Granted: 1998-09-01
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Expires: 2015-07-03
Abstract
Abstract PCT No. PCT/FI95/00383 Sec. 371 Date Jan. 21, 1997 Sec. 102(e) Date Jan. 21, 1997 PCT Filed Jul. 3, 1995 PCT Pub. No. WO96/02590 PCT Pub. Date Feb. 1, 1996Waste plastic material is treated so as to make possible its utilization as a binder component in road surfacing materials, as a fuel, or for other desirable purposes. The waste plastic material is made at least partially fluid by mixing it with a solvent. The solvent is waste fats produced in refining or by treating animal and/or vegetable fats, crude fatty acids obtained as byproducts of refining fats, or fatty acids or pitch obtained by distilling hydrolyzed fats. The solvent is typically mixed with waste plastic material in the ratio of less than 1:2, preferably about 1:3, and at a temperature of between about 150 DEG -250 DEG C.
Inventors
- 👤 Jan-Erik Johansson
- 👤 Jaakko Paatero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:01
CPC Classifications
C; C10; C10L; C10L5/00; C10L5/40; C10L5/48; C08; C08J; C08J11/00; C08J11/04; C08J11/06; C08J11/08; C08L; C08L95/00; C10G; C10G1/00; C10G1/10; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
90 words
A method of forming a road surfacing material binder comprising the steps of: (a) dissolving waste plastic material in a solvent which mainly comprises (a1) waste fats produced in refining or treating one or more of vegetable fat and animal fat, (a2) crude fatty acids obtained as by-products of refining fats, (a3) fatty acids or pitch obtained by distilling hydrolyzed fats, and (a4) mixtures of (a1)-(a3); and (b) incorporating the solvent and waste plastic material from step (a) with a road surfacing material binder, suitable for use in road surfacing.
Claim 2
Independent Claim
90 words
A method of forming a road surfacing material binder comprising the steps of: (a) dissolving waste plastic material in a solvent which mainly comprises (a1) waste fats produced in refining or treating one or more of vegetable fat and animal fat, (a2) crude fatty acids obtained as by-products of refining fats, (a3) fatty acids or pitch obtained by distilling hydrolyzed fats, and (a4) mixtures of (a1)-(a3); and (b) incorporating the solvent and waste plastic material from step (a) with a road surfacing material binder, suitable for use in road surfacing.
Claim 3
Dependent Claim
41 words
A method as recited in claim 1 wherein step (b) is practiced by incorporating the solvent and waste plastic in bitumen, and evenly mixing the solvent, waste plastic, and bitumen together to form a road surfacing material binder of uniform quality.
Claim 4
Dependent Claim
22 words
A method as recited in claim 1 comprising the further step, prior to step (a), of finely grinding the waste plastic material.
Claim 5
Dependent Claim
23 words
A method as recited in claim 3 wherein step (b) is practiced using solvent at a temperature of 150° C. to 250° C.
Claim 6
Dependent Claim
20 words
A method as recited in claim 1 wherein step (b) is practiced using solvent at a temperature over 200° C.
Claim 7
Dependent Claim
35 words
A method as recited in claim 2 wherein step (b) is practiced to form a road surfacing material binder comprising about 86% bitumen, and about 10% waste plastic and about 4% solvent from step (a).
Claim 8
Dependent Claim
28 words
A method as recited in claim 1 wherein steps (a) and (b) are practiced by mixing solvent and waste plastic material in a ratio of greater than 1:2.
Claim 9
Dependent Claim
38 words
A method as recited in claim 1 wherein step (a) is practiced by using as a solvent vegetable-based substances which are produced as waste or by-products of the food industry and which contain components originating in vegetable fats.
Claim 10
Dependent Claim
28 words
A method as recited in claim 1 wherein step (b) is practiced by mixing the liquid solution from step (a) at an elevated temperature with bitumen or asphalt.
Claim 11
Dependent Claim
38 words
A method as recited in claim 1 wherein step (a) is practiced by using one or both of fatty acids and pitch formed in connection with the hydrolysis of fats and the distillation following it, as a solvent.
Claim 12
Dependent Claim
31 words
A method as recited in claim 1 wherein step (a) is practiced by using crude fatty acids formed in connection with distillation related to the refining of fats as a solvent.
Claim 13
Dependent Claim
29 words
A method as recited in claim 1 wherein step (a) is practiced by using crude fatty acids formed in connection with the alkali refining of fats as the solvent.
Claim 14
Dependent Claim
26 words
A method as recited in claim 1 wherein step (a) is practiced by using waste deep frying oil produced in the food industry as a solvent.
Claim 15
Dependent Claim
30 words
A method as recited in claim 1 wherein step (a) is practiced by using beef tallow, hog's fat, fish oil, or waste fats of the fur industry, as the solvent.
Claim 16
Dependent Claim
31 words
A method as recited in claim 1 wherein step (a) is practiced using one or more of waste polyethene, polyamide, polystyrene, polyvinyl chloride, acrylic, and PET as the waste plastic material.
Claim 17
Dependent Claim
26 words
A method as recited in claim 3 wherein step (a) is practiced using waste plastic containing paper or plastic containing board as the waste plastic material.
Claim 18
Dependent Claim
38 words
A method as recited in claim 2 wherein steps (a) and (b) are practiced by mixing the waste plastic material with the bitumen, and then mixing the solvent from step (a) with the bitumen and waste plastic material.
Claim 19
Dependent Claim
21 words
A method as recited in claim 17 wherein steps (a) and (b) are practiced at a temperature of over 200° C.
Claim 20
Independent Claim
87 words
A method of forming a fuel, comprising the steps of: (a) dissolving waste plastic material in a solvent which mainly comprises (a1) waste fats produced in refining or treating one or more of vegetable fat and animal fat, (a2) crude fatty acids obtained as by-products of refining fats, (a3) fatty acids or pitch obtained by distilling hydrolyzed fats, and (a4) mixtures of (a1)-(a3); and (b) incorporating the waste plastic and solvent from step (a) in a liquid fuel, capable of being readily burned to produce heat energy.
Claim 21
Independent Claim
87 words
A method of forming a fuel, comprising the steps of: (a) dissolving waste plastic material in a solvent which mainly comprises (a1) waste fats produced in refining or treating one or more of vegetable fat and animal fat, (a2) crude fatty acids obtained as by-products of refining fats, (a3) fatty acids or pitch obtained by distilling hydrolyzed fats, and (a4) mixtures of (a1)-(a3); and (b) incorporating the waste plastic and solvent from step (a) in a liquid fuel, capable of being readily burned to produce heat energy.
Claim 22
Dependent Claim
25 words
A method as recited in claim 19 wherein steps (a) and (b) are practiced by adding the solvent and waste plastic to liquid fuel oil.
Claim 23
Dependent Claim
24 words
A method as recited in claim 20 wherein the solvent and the waste plastic material are mixed together at a temperature of 200° C.
Claim 24
Dependent Claim
30 words
A method as recited in claim 20 wherein step (a) is practiced by using beef tallow, hog's fat, fish oil, or waste fats of the fur industry, as the solvent.
Claim 25
Dependent Claim
26 words
A method as recited in claim 20 wherein step (a) is practiced using waste plastic containing paper or plastic containing board as the waste plastic material.
Claim 26
Dependent Claim
28 words
A method as recited in claim 20 wherein steps (a) and (b) are practiced by mixing solvent and waste plastic material in a ratio of greater than 1:2.
Claim 27
Dependent Claim
36 words
A method as recited in claim 20 wherein step (a) is practiced by using one or more of waste soybean oil, rapeseed oil, sunflower oil, palm and palm kernel oil, and coconut oil, as the solvent.
Claim 28
Independent Claim
81 words
A method of utilizing a fuel, comprising the steps of: (a) dissolving waste plastic material in a solvent which mainly comprises (a1) waste fats produced in refining or treating one or more of vegetable fat and animal fat, (a2) crude fatty acids obtained as by-products of refining fats, (a3) fatty acids or pitch obtained by distilling hydrolyzed fats, and (a4) mixtures of (a1)-(a3) to produce a liquid solution; and (b) burning the liquid solution, in liquid form, to produce heat energy.
Claim 29
Independent Claim
81 words
A method of utilizing a fuel, comprising the steps of: (a) dissolving waste plastic material in a solvent which mainly comprises (a1) waste fats produced in refining or treating one or more of vegetable fat and animal fat, (a2) crude fatty acids obtained as by-products of refining fats, (a3) fatty acids or pitch obtained by distilling hydrolyzed fats, and (a4) mixtures of (a1)-(a3) to produce a liquid solution; and (b) burning the liquid solution, in liquid form, to produce heat energy.
Claim 30
Dependent Claim
36 words
A method as recited in claim 26 wherein step (a) is practiced at a temperature of 150° C. to 250° C., and by mixing solvent and waste plastic material in a ratio of greater than 1:2.
Claim 31
Dependent Claim
83 words
A liquid solution containing one or more of waste polyethene, polyamide, polystyrene, PVC, acrylic, and PET waste plastic material dissolved in a solvent which mainly comprises (a1) waste fats produced in refining or treating of one or more vegetable fat and animal fat, (a2) crude fatty acids obtained as by-products of refining fats, (a3) fatty acids or pitch obtained by distilling hydrolyzed fats, and (a4) mixtures of (a1)-(a3), the solvent mixed with the waste plastic material in the ratio of greater than 1:2.
Claim 32
Dependent Claim
83 words
A liquid solution containing one or more of waste polyethene, polyamide, polystyrene, PVC, acrylic, and PET waste plastic material dissolved in a solvent which mainly comprises (a1) waste fats produced in refining or treating of one or more vegetable fat and animal fat, (a2) crude fatty acids obtained as by-products of refining fats, (a3) fatty acids or pitch obtained by distilling hydrolyzed fats, and (a4) mixtures of (a1)-(a3), the solvent mixed with the waste plastic material in the ratio of greater than 1:2.
Claim 33
Dependent Claim
14 words
A liquid fuel as recited in claim 28 further comprising liquid industrial fuel oil.
Claim 34
Dependent Claim
93 words
A road surfacing material binder comprising: one or more of waste polyethene, polyamide, polystyrene, PVC, acrylic, and PET waste plastic material dissolved in a solvent which mainly comprises (a1) waste fats produced in refining or treating one or more of vegetable fat and animal fat, (a2) crude fatty acids obtained as by-products of refining fats, (a3) fatty acids or pitch obtained by distilling hydrolyzed fats, and (a4) mixtures of (a1)-(a3), the solvent mixed with the waste plastic material being evenly mixed together in the ratio of greater than 1:2; and bitumen or asphalt.
Claim 35
Dependent Claim
93 words
A road surfacing material binder comprising: one or more of waste polyethene, polyamide, polystyrene, PVC, acrylic, and PET waste plastic material dissolved in a solvent which mainly comprises (a1) waste fats produced in refining or treating one or more of vegetable fat and animal fat, (a2) crude fatty acids obtained as by-products of refining fats, (a3) fatty acids or pitch obtained by distilling hydrolyzed fats, and (a4) mixtures of (a1)-(a3), the solvent mixed with the waste plastic material being evenly mixed together in the ratio of greater than 1:2; and bitumen or asphalt.
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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) | 2001-08-31 | 2002-03-02 | 2002-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-31 | 2006-03-02 | 2006-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-31 | 2010-03-02 | 2010-09-01 | $7700.00 | Window Closed / Lapsed |