method for forming an accelerator-free thin-walled rubber
EP1549476B1 - Method for forming an accelerator-free thin
Thin-walled rubber articles for use contact with living tissue or with materials to be delivered to living tissue are prepared from aqueous latex of either natural rubber or synthetic cis-1,4-polyisoprene by vulcanization to produce both carbon-carbon and carbon- (sulfur) n-carbon crosslinks, the vulcanization being performed in the absence of any compounding components that contain secondary ...
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Method for forming an accelerator-free thin-walled rubber
1. A method for forming a thin-walled rubber article, said method comprising : a. forming an aqueous latex comprising vulcanizable rubber, and water, said latex being devoid of vulcanization accelerators that contain secondary amine groups ; and b. forming said aqueous latex into said thin-walled rubber article by: i. forming said aqueous latex into a film, ii. evaporating water from said film ...
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US Patent for Accelerator-free thin-walled rubber
1. A method for forming a thin-walled rubber article, said method comprising: (a) forming an aqueous latex comprising vulcanizable rubber, a sulfur-containing vulcanizing agent, a crosslinking agent that forms carbon-carbon crosslinks, and water, said latex being devoid of vulcanization accelerators that contain secondary amine groups; and
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Accelerator-free thin-walled rubber vulcanizates from latex
1. A method for forming a thin-walled rubber article, said method comprising: (a) forming an aqueous latex comprising vulcanizable rubber, a sulfur-containing vulcanizing agent, a crosslinking agent that forms carbon-carbon crosslinks, and water, said latex being devoid of vulcanization accelerators that contain secondary amine groups; and
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WO2006081415A2 - Thin walled polynitrile oxide crosslinked
THIN WALLED POLYNITRILE OXIDE CROSSLINKED RUBBER FILM PRODUCTS AND METHODS OF MANUFACTURE THEREOF. ... A method for forming dip-molded or cast thin walled rubber film products comprised of natural rubber or synthetic cis-l,4-polyisoprene rubber crosslinked with a polynitrile oxide crosslinking agent, comprising: ... Accelerator-free thin-walled ...
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Patents by Inventor Mark W. McGlothlin - Justia
The invention further comprises methods for making a catheter of the invention and methods of delivering a fluid to a patient with a catheter of the invention. ... Accelerator-free thin-walled rubber vulcanizates from latex. ... Inventor: Mark W. McGlothlin Method of forming a polymeric casing with textured surface ...
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EP1841802B1 - Thin walled polynitrile oxide crosslinked
Natural rubber and/or synthetic polyisoprene film products having enhanced tear strength and tensile strength crosslinked with a one polynitrile oxide, intended for direct or indirect contact with living tissue or fluids to be placed in living organisms.
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US20040036196A1 - Powder-free nitrile gloves
The present invention discloses a method of removing a rubber article from a former and producing a powder-free nitrile rubber article without the necessity of any post-stripping powder removal techniques. The process includes contacting a former with a powder-free coagulant composition and then contacting the former with a nitrile latex emulsion to form the matrix of the article on the former.
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US6051320A - Thin-walled natural rubber latex material
A thin walled natural rubber latex material is disclosed suitable for forming thin walled products including gloves, dental dams and shields, catheter tubing, penrose surgical drains, finger cots, coverings for body parts, and the like. The thin walled material is formed from a latex emulsion containing natural rubber, sulphur-free, oxygen-donating curing agents, and a strength enhancing agent ...
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Vulcanization & Accelerators
Vulcanization & Accelerators Vulcanization is a cross linking process in which individual molecules of rubber (polymer) are converted into a three dimensional network of interconnected (polymer) chains through chemical cross links(of sulfur). The vulcanization process was discovered in 1839 and the individuals responsible for this discovery were
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An Accelerator Free Peroxide Vulcanization Technique
An accelerator-free curing method has been developed for use with many existing latticesthem from a mainly viscous state to an elastic state by forming a three dimensional network. Sulphur isactivator is used for vulcanizing dry rubber instead of sulphur Hydro-peroxide vulcanized lattices
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Free-Form Optimization of Thin-Walled Structure for Frequency
With this free-form optimization method, an optimum thin-walled structure with a smooth free-form surface can be obtained without any shape parameterization. The calculated results show the effectiveness of the proposed method for the optimal free-form design of thin-walled structures with
Send InquiryWo/2004/033177 accelerator-free thin-walled rubber vulcanizates
Accelerator-free thin-walled rubber vulcanizates from latex. AbstractWhile sulfur activators may be included, it is preferable that no sulfur accelerators at all be included. Thin-walled rubber articles formed from the latex surprisingly exhibit a combination of high tensile
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Rubber pad tube straining as a new severe plastic | MetaTOC
A novel severe plastic deformation technique entitled rubber pad tube straining is proposed suitable for manufacturing of high-strength ultrafine-grainedFinite element results revealed that the equivalent plastic strain of about 1 could be reached at the end of the first cycle of rubber pad tube straining
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Exploring Liquid Impact Forming Technology of the Thin-Walled Tubes
Liquid impact forming, a compound forming technique of thin-walled tube using stamping and hydroforming processes, is presented inWe propose a specific methodology based on the coupling between an enhanced one-step method for the rapid simulation of tube hydroforming process and a
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Accelerator-free thin-walled rubber vulcanizates from - PubChem
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Send InquiryResearch on bending forming method of large
Large diameter thin-walled tubes are key lightweight components with important applications in the aviation and aerospace industries.In this study, a numerical control (NC) rotary draw bending (RDB) forming method for large diameter-to-thickness ratio thin-walled (LDTRTW) tubes was investigated.
Send InquiryA Multi-Objective Optimization Method for Thin-Walled Tube NC
It is proved that the forming quality has been improved by the method.Application is put forward for Ф50×1×100 (tube outside diameter ×tube wall thickness × central line bendingAbstract: The bending of plates on rubber pad is a relatively new method used for roll bending of thin plates in recent years.
Send InquiryVulcanization - an overview | ScienceDirect Topics
The accelerators react in the form of their more active zinc salts, due to the nearly ubiquitous presence of zinc oxide in sulfur vulcanized compounds.These properties, which are generally related to the speed with which the accelerator is converted to its very active salt form, are compared in Table 1.
Send InquiryThin Rubber Mat: Amazon.com
Buy products related to thin rubber mat products and see what customers say about thin rubber mat products on Amazon.com ✓ FREE DELIVERY possible on eligible purchases.Before, you could hear the spin cycle throughout the whole house, and it would rattle cupboards and other items on the walls.
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