GB2373506A - Static-free synthetic rubber - Google Patents
Static-free synthetic rubber Download PDFInfo
- Publication number
- GB2373506A GB2373506A GB0107417A GB0107417A GB2373506A GB 2373506 A GB2373506 A GB 2373506A GB 0107417 A GB0107417 A GB 0107417A GB 0107417 A GB0107417 A GB 0107417A GB 2373506 A GB2373506 A GB 2373506A
- Authority
- GB
- United Kingdom
- Prior art keywords
- static
- synthetic rubber
- minutes
- kneading
- mixture
- 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.)
- Granted
Links
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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- 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
- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
A process for producing static-free synthetic rubber includes mixing ethylene vinyl acetate, acrylonitrile-butadiene, Anti-static agent, Activated zinc oxide, Zinc stearate, HI-sil (RTM), EPDM, Plasticizer, and Stearic Acid prior to a kneading process at 140 degrees Celsius for 8 to 12 minutes. (DCP) Peroxides and Blowing agents are added to the kneading mixture two minutes before the end of the kneading process. After the kneading process, the resultant mixture is fed through rollers (10, Fig 2) to form a sheet (20B, Fig 2) of the synthetic rubber The sheet (20B) is then cut into appropriately-sized pieces and put into a mold (30, Fig 3), where the pieces are subjected to high pressure and a temperature of 160 degrees Celsius. The pieces are then left to cool, and then be used for articles such as static-free footwear.
Description
STATIC-FREE SYNTHETIC RUBBER 1. Field of the Invention
The present invention relates to a synthetic rubber, especially a synthetic rubber which remains free of static electricity while being used.
Synthetic rubbers have many applications and are now particularly important in the Information Technology industry, where electronic devices such as semiconductors etc, can be seriously damaged by static electricity during their manufacture.
The static electricity is often caused by shoes of workers, and then it travels through the atmosphere to the components being produced. Although so-called"static-free" rooms are devised to try to eliminate the occurrence of static, it is found that static still occurs, again often from the footwear of the workers as they move around. Thus, there is a long and unfulfilled need for a synthetic rubber which is completely static free when in use, especially static-free synthetic rubber for use on floors and footwear in the production of electrical components.
The main objective of the invention is to provide a synthetic rubber which is completely free from the production of static electricity.
A further objective of the invention is to produce a static-free synthetic rubber for use in preparing foot wear and floor coverings.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
In the drawings:
Fig. 1 is a flow chart of the production of static-free synthetic rubber in accordance with the present invention ;
Fig. 2 is a schematic view of the synthetic rubber of the present invention being passed through a pair of rollers; and
Fig. 3 is a schematic view of a portion of the synthetic rubber of the present invention prior to be further processed in a mold.
The present invention relates to a static-free synthetic rubber, and involves the process as shown in Fig. l.
The following ingredients are mixed together in ratios of weight as indicated in the parentheses:
Ethylene Vinyl Acetate (38.14%)
Acrylonitrile-butadiene (7.63%)
Anti-static agent (9.77%)
Activated Zinc Oxide (3. 81%)
Zinc Stearate (1.07%)
HI-Sil (24.41%)
EPDM (7.63%)
Plasticizer (3.36%)
Stearic Acid (1.07%)
A resulting mixture (20) is put in a kneading machine, and kneaded for 8 to
12 minutes at 140 degrees Celsius. Two minutes before the projected end of the kneading cycle, (DCP) Peroxides (0.98%) and (AC) Blowing agents (2.14%) are added to produce a mixture (20A). After completion of the kneading cycle, the mixture (20A) is removed and then fed through rollers (10) as shown in Fig. 2, to produce a sheet (20B) of the synthetic rubber in accordance with the present invention. Referring to Fig. 3, the sheet (20B) is cut into portions (20C), each of which is put into a mold (30) comprising two halves. The mold (30) is preheated to 160 degrees Celsius and the two halves are brought together, whereafter the portion (20C) is subjected to high pressure for 10 minutes, and then cooled.
The portions (20C) can be formed into shoe soles, floor mats, cushions for seating, all of which are static-free and so can be used in environments requiring which are demanded to be static-free, such as in the production of components for the Information Technology industry.
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (2)
1.07% Stearic Acid ; (b) adding the resulting mixture from step (a) for a kneading cycle in a kneading machine for a duration of a minimum 8 minutes and a maximum of 12 minutes; wherein a further step of adding 0.98% (DCP) Peroxides and
2.14% Blowing agents to the disclosed mixture two minutes is added before the end of the disclosed kneading cycle; wherein the disclosed mixture in the kneading cycle is heated to 140 degrees
Celsius ; wherein after the kneading cycle is finished, the mixture is fed through rollers to produce a sheet of the static-free synthetic rubber ;
1. 07% Zinc Stearate;
24.41% Hi-Sil (RIM) comprising 98% silica, 1 8% water soluble salts, and 0.05% max iron ;
7.63% (EPDM) ;
3.36% Plasticizer; and
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0107417A GB2373506B (en) | 2001-03-24 | 2001-03-24 | Static-free synthetic rubber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0107417A GB2373506B (en) | 2001-03-24 | 2001-03-24 | Static-free synthetic rubber |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0107417D0 GB0107417D0 (en) | 2001-05-16 |
GB2373506A true GB2373506A (en) | 2002-09-25 |
GB2373506B GB2373506B (en) | 2003-02-19 |
Family
ID=9911487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0107417A Expired - Fee Related GB2373506B (en) | 2001-03-24 | 2001-03-24 | Static-free synthetic rubber |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2373506B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1449868A1 (en) * | 2003-02-19 | 2004-08-25 | Nitto Denko Corporation | Composition for polyolefin resin foam and foam thereof, and method for producing foam |
CN101812203B (en) * | 2009-12-07 | 2011-09-28 | 天津鹏翎胶管股份有限公司 | Formula of ethylene propylene terpolymer with high resistance to braking fluid |
CN109370063A (en) * | 2018-09-26 | 2019-02-22 | 珠海科茂威新材料有限公司 | A kind of low pre-dispersed masterbatch particles of zinc high activity |
US11447621B2 (en) * | 2018-06-13 | 2022-09-20 | Braskem S.A. | EVA thermoplastic compounds, methods thereof, and articles therefrom |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5620042A (en) * | 1979-07-26 | 1981-02-25 | Ube Ind Ltd | Stretch film for wrapping of accumulation |
GB2270696A (en) * | 1992-09-05 | 1994-03-23 | Shyu Horng Yi | Electrically conductive foam |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10265618A (en) * | 1997-03-26 | 1998-10-06 | Lonseal Corp | Antistatic flooring material and antistatic welding rod |
-
2001
- 2001-03-24 GB GB0107417A patent/GB2373506B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5620042A (en) * | 1979-07-26 | 1981-02-25 | Ube Ind Ltd | Stretch film for wrapping of accumulation |
GB2270696A (en) * | 1992-09-05 | 1994-03-23 | Shyu Horng Yi | Electrically conductive foam |
Non-Patent Citations (2)
Title |
---|
PAJ Abstract for JP100265618A * |
WPI Abstract Aceesion No 1981-28166D & JP 56 020 042 A * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1449868A1 (en) * | 2003-02-19 | 2004-08-25 | Nitto Denko Corporation | Composition for polyolefin resin foam and foam thereof, and method for producing foam |
CN1523051B (en) * | 2003-02-19 | 2010-06-02 | 日东电工株式会社 | Composition for polyolefin resin foam and foam thereof, and method for producing foam |
CN101812203B (en) * | 2009-12-07 | 2011-09-28 | 天津鹏翎胶管股份有限公司 | Formula of ethylene propylene terpolymer with high resistance to braking fluid |
US11447621B2 (en) * | 2018-06-13 | 2022-09-20 | Braskem S.A. | EVA thermoplastic compounds, methods thereof, and articles therefrom |
CN109370063A (en) * | 2018-09-26 | 2019-02-22 | 珠海科茂威新材料有限公司 | A kind of low pre-dispersed masterbatch particles of zinc high activity |
Also Published As
Publication number | Publication date |
---|---|
GB2373506B (en) | 2003-02-19 |
GB0107417D0 (en) | 2001-05-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20050324 |