Patents by Inventor Alessandro Cervellati

Alessandro Cervellati has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for devulcanizing vulcanized fluoroelastomers, fluoroelastomers thereof and their use
    Patent number: 9000058
    Abstract: A process for devulcanizing fluoroelastomers having a fluorine content between 62% and 74% by weight vulcanized by ionic systems, preferably selected from bisphenol A and bisphenol AF, i.e. 2,2-bis(4-hydroxyphenyl)hexafluoropropane, the process including a step of heating the vulcanized fluoroelastomers in the presence of a hydrolysis composition having one or more chemical selected from water, water soluble alcohols, water soluble glycols and mixtures thereof, at a temperature from 350° C. to 430° C. Fluoroelastomers obtainable by this process and their use for the preparation of compounds and vulcanized compositions are also described.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: April 7, 2015
    Assignee: Dott. Viola & Partners Chemical Research S.R.L.
    Inventors: Alessandro Cervellati, Gian Tommaso Viola
  • Process for devulcanizing vulcanized fluoroelastomers, fluoroelastomers thereof and their use
    Publication number: 20140378562
    Abstract: A process for devulcanizing fluoroelastomers having a fluorine content between 62% and 74% by weight vulcanized by ionic systems, preferably selected from bisphenol A and bisphenol AF, i.e. 2,2-bis(4-hydroxyphenyl)hexafluoropropane, the process including a step of heating the vulcanized fluoroelastomers in the presence of a hydrolysis composition having one or more chemical selected from water, water soluble alcohols, water soluble glycols and mixtures thereof, at a temperature from 350° C. to 430° C. Fluoroelastomers obtainable by this process and their use for the preparation of compounds and vulcanized compositions are also described.
    Type: Application
    Filed: February 28, 2013
    Publication date: December 25, 2014
    Applicant: DOTT. VIOLA & PARTNERS CHEMICAL RESEARCH S.R.L.
    Inventors: Alessandro Cervellati, Gian Tommaso Viola