GB2373506A - Static-free synthetic rubber - Google Patents

Static-free synthetic rubber Download PDF

Info

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
Application number
GB0107417A
Other versions
GB2373506B (en
GB0107417D0 (en
Inventor
Kuo-Hsiang Chang
Yu-Chou Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0107417A priority Critical patent/GB2373506B/en
Publication of GB0107417D0 publication Critical patent/GB0107417D0/en
Publication of GB2373506A publication Critical patent/GB2373506A/en
Application granted granted Critical
Publication of GB2373506B publication Critical patent/GB2373506B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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)

CLAIMS: 1. A static-free synthetic rubber, comprising: Ethylene Vinyl Acetate; Acrylonitrile-butadiene ; Anti-static agent; Activated Zinc Oxide; Zinc Stearate; HI-sil; (EPDM); Plasticizer ; Stearic Acid; (DCP) Peroxides; and (AC) Blowing agents; wherein the ingredients are in the following weight ratios: 38.14% Ethylene Vinyl Acetate; 7.63% Acrylonitrile-butadiene; 9.77% Anti-static agent; 3. 81% Activated Zinc Oxide; 1.07% Zinc Stearate; 24. 41% HI-sil; 7.63% (EPDM); 3.36% plasticizer; and 1.07% Stearic Acid. 2. The static-free synthetic rubber as claimed in claim 1, further including 0.98% (DCP) Peroxides and 2.14% (AC) blowing agents. 3. A process for producing a static-free synthetic rubber, including the steps: (a) mixing the following ingredients in percentage weight ratios as shown, 38.14% Ethylene Vinyl Acetate; 7.63% Acrylonitrile-butadiene; 9.77% Anti-static agent; 3. 81% Activated Zinc Oxide; 1.07% Zinc Stearate; 24. 41% HI-sil; 7.63% (EPDM); 3.36% Plasticizer; and 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; wherein the sheet of synthetic rubber is cut into pieces and the pieces are put into a mold to be subject to high pressure at a temperature of 160 degrees Celsius for 10 minutes. Amendments to the claims have been filed as follows 1. A static-free synthetic rubber, comprising' Ethylene Vinyl Acetate, Acrylonitrile-butadiene ; Anti-static agent; Activated Zinc Oxide; Zinc Stearate ; Hi-Sil (RTM) comprising 98% silica, 1 8% water soluble salts, and 0.05% max iron; (EPDM) Plasticizer ; Stearic Acid ; (DCO) Peroxides, and (AC) Blowing agents; wherein the ingredients are in the following weight ratios: 38.14% Ethylene Vinyl Acetate; 7. 63% Acrylonitrile-butadiene ; 9.77% Anti-static agent; 3. 81% Activated Zinc Oxide; 1.07% Zinc Sterate. 24. 41% Hi-Sil (RTM) 7.63% plasticizer; 1.07% Stearic Acid; 0 98% (DCP) Peroxides; and 2. 14% (AC) blowing agents. 2. A process for producing a static-free synthetic rubber, including the steps: (a) mixing the following ingredients in percentage weight ratios as shown, 38.14% Ethylene Vinyl Acetate; 7. 63% Acrylonitrile-butadiene; 9. 77% Anti-static agent ; 3. 81% Activated Zinc Oxide;
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
GB0107417A 2001-03-24 2001-03-24 Static-free synthetic rubber Expired - Fee Related GB2373506B (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Title
PAJ Abstract for JP100265618A *
WPI Abstract Aceesion No 1981-28166D & JP 56 020 042 A *

Cited By (5)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
US6235805B1 (en) Static-free synthetic rubber
JP3323284B2 (en) Composition based on an elastomeric polymer consisting of vinylidene fluoride, hexafluoropropene and optionally tetrafluoroethylene suitable for the production of microporous foamed products
CN113527790A (en) Anti-static irradiation crosslinked polyethylene foam material and preparation method thereof
CN102924801B (en) Preparation method of composite foamed material
GB2373506A (en) Static-free synthetic rubber
CN104530550B (en) A kind of thermoplastic elastomer (TPE) and preparation method thereof and the moulding process for conveyer belt
CN109834901A (en) A kind of midsole of TPU expanded beads and the integrally formed moulding process of shoes outsole
CN106243470A (en) A kind of wear resistant shoe product material and preparation method
CN106042410A (en) Mold pressing production technology for polytetrafluoroethylene plates
CN110845787A (en) High-resilience modified EVA material, high-resilience EVA sole and manufacturing method thereof
CN106220980A (en) A kind of compound article of footwear material and preparation method
CN110591215A (en) Ultralight EVA (ethylene-vinyl acetate) midsole material for sneakers and manufacturing method thereof
CN104544720A (en) Oil-resistant anti-static-electricity rubber/EVA (ethylene-vinyl acetate copolymer) sole recipe as well as preparing method and application thereof
CN103289411B (en) Closed cell foamed material and preparation method thereof is blended in Silicone Rubber/EPDM binary
CN106117668A (en) A kind of corrosion resistant rubber composite of antistatic and preparation method thereof
CN105820521A (en) Plastic floor special for stadium and preparation method thereof
US2901774A (en) Process of making cellular material
KR100695401B1 (en) Ethylene vinyl Acetate CopolymerEVA compounds for a footwear sole, Method for producing a sponge by using thereof and a sponge
CN114702718A (en) Foaming sole formula capable of shortening secondary forming time and preparation method thereof
CN116711904A (en) Camouflage soft high-elasticity foaming sole and processing method thereof
US8048349B2 (en) Method for the preparation of foamed and crosslinked rubber
CN112795065B (en) Sole rubber composition and preparation method thereof
CN114634681A (en) High-elastic anti-static sole and preparation method thereof
JP3462169B2 (en) Non-charged synthetic rubber and method for producing the same
KR100688154B1 (en) A shoe sole using the cork sponge and a method for manufacturing the same

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050324