rubber composition which is free of carcinogenic by brazil
Rubber | chemical compound | Britannica
Rubber. Formed in a living organism, natural rubber consists of solids suspended in a milky fluid, called latex, that circulates in the inner portions of the bark of many tropical and subtropical trees and shrubs, but predominantly Hevea brasiliensis, a tall softwood tree originating in Brazil.
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EP0695780A1 - Rubber composition free of carcinogenic
A compsn. contains: (a) natural rubber, polyisoprene, polybutadiene, a styrene-butadiene, styrene-isoprene or butadiene-isoprene copolymer or a styrene-butadiene-isoprene terpolymer, (b) S, (c) benzothiazyl disulphide or mercaptobenzothiazole as accelerator, (d) tetrabenzylthiuram disulphide or Zn dibenzyldithiocarbamate as ultra-accelerator, and (e) an amine, guanidine, aldehyde-amine condensate or quat. ammonium salt as vulcanisation activator, and is vulcanisable at 95-140 degrees C.
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US6982050B2 - Rubber composition which is free
A rubber composition which is free of precursor of at least one carcinogenic nitrosamine, is capable of vulcanization at a temperature of between 95° C. and 140° C., and has a vulcanization system which includes: a) sulfur; b) an accelerator compound; c) an ultra-accelerator compound; d) a vulcanization amine activator.
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CN1120559A - Rubber composition which is free
Rubber composition which does not contain at least one carcinogenic nitrosamine precursor, curing it, it has a cure system comprising at 95 ℃ -140 ℃ of: a) sulfur; b) promoter compound; c) ultra accelerator compound; D) an amine curing agent.
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Evaluation of potential carcinogenicity of organic
Currently, there are > 11,000 synthetic turf athletic fields in the United States and > 13,000 in Europe. Concerns have been raised about exposure to carcinogenic chemicals resulting from contact with synthetic turf fields, particularly the infill material (“crumb rubber”), which is commonly fabricated from recycled tires.
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SOLID AND LIQUID SILICONE RUBBER - MATERIAL AND PROCESSING
Chemical fundamentals, the most important silicone rubber grades, their components and curing mechanisms Section 2: Silicone Rubber – Material and Processing Advantages 14 Why and when silicone rubber is the material of choice. Material and processing advantages Section 3: WACKER Silicone Rubber Grades 20
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MATERIAL SAFETY DATA SHEET - Federal-Mogul
Listed Carcinogens: The rubber industry is listed as an exposure circumstance that is known to be carcinogenic to humans (Group 1). Carbon black: Certain carbon blacks have proved carcinogenic in animal studies. Inhalation animal studies of high concentrations resulted in chronic inflammation, lung fibrosis and lung tumors.
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Crumb rubber
The chemicals listed above include carcinogens, and other chemicals with dermal and endocrine disrupting impacts. Environmental impacts. Crumb rubber is used as a filling in artificial turf fields. In 2007, use in this capacity prevented about 300 million pounds of rubber from polluting landfills.
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General Properties of Elastomers - ELBEX Corporation
Crude natural rubber is found in the juices of many plants (shrubs, vines, and trees), the principal of which is the Hevea Brasiliensis tree, native to Brazil. After the latex is processed, natural rubber becomes an elastomer with excellent mechanical properties. Natural Rubber has a typical service temperature range between –67° F and +180° F.
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Natural rubber
The rubber particle is an enzymatically active entity that contains three layers of material, the rubber particle, a biomembrane and free monomeric units. The biomembrane is held tightly to the rubber core due to the high negative charge along the double bonds of the rubber polymer backbone.
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CN1120559A - Rubber composition which is free
Rubber composition which does not contain at least one carcinogenic nitrosamine precursor, curing it, it has a cure system comprising at 95 ℃ -140 ℃ of: a) sulfur; b) promoter compound; c) ultra accelerator compound; D) an amine curing agent.
Send Inquiry
US6982050B2 - Rubber composition which is free
A rubber composition which is free of precursor of at least one carcinogenic nitrosamine, is capable of vulcanization at a temperature of between 95° C. and 140° C., and has a vulcanization system which includes: a) sulfur; b) an accelerator compound; c) an ultra-accelerator compound; d) a vulcanization amine activator.
Send InquiryEP0695780A1 - Rubber composition free of carcinogenic
A compsn. contains: (a) natural rubber, polyisoprene, polybutadiene, a styrene-butadiene, styrene-isoprene or butadiene-isoprene copolymer or a styrene-butadiene-isoprene terpolymer, (b) S, (c) benzothiazyl disulphide or mercaptobenzothiazole as accelerator, (d) tetrabenzylthiuram disulphide or Zn dibenzyldithiocarbamate as ultra-accelerator, and (e) an amine, guanidine, aldehyde-amine condensate or quat. ammonium salt as vulcanisation activator, and is vulcanisable at 95-140 degrees C.
Send Inquiry
Evaluation of potential carcinogenicity of organic
Currently, there are > 11,000 synthetic turf athletic fields in the United States and > 13,000 in Europe. Concerns have been raised about exposure to carcinogenic chemicals resulting from contact with synthetic turf fields, particularly the infill material (“crumb rubber”), which is commonly fabricated from recycled tires.
Send InquirySOLID AND LIQUID SILICONE RUBBER - MATERIAL AND PROCESSING
Chemical fundamentals, the most important silicone rubber grades, their components and curing mechanisms Section 2: Silicone Rubber – Material and Processing Advantages 14 Why and when silicone rubber is the material of choice. Material and processing advantages Section 3: WACKER Silicone Rubber Grades 20
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Heveya - The truth about organic vs natural latex - what
Natural latex comes from the milky sap harvested from the rubber tree (Hevea Brasiliensis). Rubber trees allegedly originated in Brazil, but were planted across the globe and now are mainly found in the tropics of South East Asia and Africa. Rubber tappers strip a thin layer of bark off the tree to release the latex and collect it from cups.
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Ecologically-Friendly Rubber Flooring Options
This is another place where it is important to understand the chemical composition of the material. Its flammability will depend on the elements used in its manufacture. A rubber floor that contains chlorine or other toxic ingredients is going to release them into the air if it catches on fire.
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MATERIAL SAFETY DATA SHEET - Federal-Mogul
Listed Carcinogens: The rubber industry is listed as an exposure circumstance that is known to be carcinogenic to humans (Group 1). Carbon black: Certain carbon blacks have proved carcinogenic in animal studies. Inhalation animal studies of high concentrations resulted in chronic inflammation, lung fibrosis and lung tumors.
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