US1166784A - Revulcanizing rubber. - Google Patents
Revulcanizing rubber. Download PDFInfo
- Publication number
- US1166784A US1166784A US74425513A US1913744255A US1166784A US 1166784 A US1166784 A US 1166784A US 74425513 A US74425513 A US 74425513A US 1913744255 A US1913744255 A US 1913744255A US 1166784 A US1166784 A US 1166784A
- Authority
- US
- United States
- Prior art keywords
- rubber
- revulcanizing
- exhausting
- compressing
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/12—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
Definitions
- My invention relates to the treatment of rubber, and has particular reference to a novel process of rcvulcanizing rubber, as will be hereinafter more particularly described.
- My novel-process contemplates the treatment of vulcanized rubber, generally waste or scrap, and embodies the following steps: First, exhausting from the material being treated the air, moisture, etc., by means of a vacuum. Secondly, compressing the material so exhausted to any desired degree, which may be as high as three 'or four thousand pounds to thesquare inch, or even higher. Thirdly, heating the material so exhausted and compressed, the amount of heat being governed by the character of the scrap being treated, and which may run as high as 500 F. or higher.
- revulcanizing rubber which consists in exhausting. heating, and compressingthe material under compacting pressure in excess of that required for consolidating the mass, and finally subjecting the same to a vulcanizing heat.
- testimonv whereof. I have hereunto set my hand in the presence of two subscribing witnesses.
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Description
UNITED were PATENT orn cn.
RAYMOND B. PRICE, OF NEW YORK, N. Y. ASSIGNOR TO RUBBER REGENEBATING COMPANY, A CORPORATION OF INDIANA.
REVULCANIZING RUBBER.
No Drawing.
T 0 all whom it may concern,
Be it known that I, RAYMOND B. PRICE, a citizen of the United States, residing in the borough of Manhattan, city of New York, State of New York, have invented new and useful Improvements in Revulcanizing Rubber, of which the following is a specification.
My invention relates to the treatment of rubber, and has particular reference to a novel process of rcvulcanizing rubber, as will be hereinafter more particularly described.
My novel-process contemplates the treatment of vulcanized rubber, generally waste or scrap, and embodies the following steps: First, exhausting from the material being treated the air, moisture, etc., by means of a vacuum. Secondly, compressing the material so exhausted to any desired degree, which may be as high as three 'or four thousand pounds to thesquare inch, or even higher. Thirdly, heating the material so exhausted and compressed, the amount of heat being governed by the character of the scrap being treated, and which may run as high as 500 F. or higher.
It may be found desirable under certain conditions to apply someheat to the material being treated during the exhausting orthe compressing step in the process, or during both of these steps, or beforehand, but the heat'so applied thereto must be retained below the fusing point of rubber.
I, furthermore, contemplate under certain circumstances an additional step in the process, vi'z.: quicklv cooling the material afterthe application thereto ofthe third or heating step in the process to check vulcanization and prevent over-curing of the exterior of-the product.
By compressing the material being treatad, which constitutes the second step in my,
Specification of Letters Patent.
Patented Jan. 4, 1916.
Application filed January 25, 1913. SerialN-o. 744,255.
minimized.
Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:
1. The process of revulcanizing rubber, which consists in exhausting. heating, and compressingthe material under compacting pressure in excess of that required for consolidating the mass, and finally subjecting the same to a vulcanizing heat.
2. The process of revulcanizing rubber, which consists in exhausting and compressing the same under excessive compacting pressure in the presence of heat below the raised fusing point of rubber under said pressure. and then subiecting the material so treated to a vulcanizing heat.
3. The process of revulcanizing rubber. which consists in exhausting, heating, and compressing the same under excessive comacting pressure to minimize destructive distillation, then subiecting the same to vulcanizingheat, and finally quickly cooling the same to check surface vulcanization.
In testimonv whereof. I have hereunto set my hand in the presence of two subscribing witnesses.
PERCY B; HILLS, A. L. M'ILLS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74425513A US1166784A (en) | 1913-01-25 | 1913-01-25 | Revulcanizing rubber. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74425513A US1166784A (en) | 1913-01-25 | 1913-01-25 | Revulcanizing rubber. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1166784A true US1166784A (en) | 1916-01-04 |
Family
ID=3234805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US74425513A Expired - Lifetime US1166784A (en) | 1913-01-25 | 1913-01-25 | Revulcanizing rubber. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1166784A (en) |
-
1913
- 1913-01-25 US US74425513A patent/US1166784A/en not_active Expired - Lifetime
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