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Ecser Holding Corporation
165 East 66th St.
New York, NY 10065
Phone:
212.737.9430
Fax:
212.208.4453
Email:
INTELLECTUAL PROPERTY
Ecser™ holds two US patents for the method and composition for the devulcanization of scrap rubber. Ecser's patents are also filed in 80 countries all around the world.
United States Patent 6,387,966 May 14, 2002
Method and composition for devulcanization of waste rubber Abstract
Mechanical/chemical method and composition for de-vulcanization of rubber maintains the macromolecules, renders sulfur passive for later re-vulcanization, is cost effective, environmentally friendly and produces high quality de-vulcanized rubber to replace virgin rubber. Waste rubber is shredded, crushed and metal-removed. Modifying composition is added as the particles of shredded waste rubber are poured between two rollers that further crush the particles. The modifying composition is a mixture of (1) a proton donor that selectively breaks the sulfur bonds and renders the sulfur passive, (2) a metal oxide and (3) an organic acid that build new bonds between macromolecules for later re-vulcanization, (4) an inhibitor that prevents re-attachment of sulfur radicals with each other before the proton donor attaches itself to the sulfur and (5) a friction agent that prevents sliding of the waste rubber between the rollers. (Full text can be seen on www.uspto.gov)
United States Patent 6,541,526 April 1, 2003
Method and composition for devulcanization of waste rubber Abstract
Mechanical/chemical method and composition for de-vulcanization of rubber maintains the macromolecules, renders sulfur passive for later re-vulcanization, is cost effective, environmentally friendly and produces high quality de-vulcanized rubber to replace virgin rubber. Waste rubber is shredded, crushed and metal-removed. Modifying composition is added as the particles of shredded waste rubber are poured between two rollers that further crush the particles. The modifying composition is a mixture of (1) a proton donor that selectively breaks the sulfur bonds and renders the sulfur passive, (2) a metal oxide and (3) an organic acid that build new bonds between macromolecules for later re-vulcanization, (4) an inhibitor that prevents re-attachment of sulfur radicals with each other before the proton donor attaches itself to the sulfur and (5) a friction agent that prevents sliding of the waste rubber between the rollers. (Full text can be seen on www.uspto.gov)
Ecser™'s patented process creates a de-vulcanized rubber that can be used as a partial or complete substitute for virgin rubber. ECSER's compounding solution and technological regimes are designed to minimize a reverse vulcanization reaction during and after the production process.
