Patents by Inventor Joel Pellenc

Joel Pellenc 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).

  • Varnishes with high hardness, resistant to abrasion, process for their preparation, and application of these varnishes to coating of solid substrates
    Patent number: 4732787
    Abstract: A hard, abrasion resistant varnish, for coating the surfaces of solid substrates, comprises a solution in a mixture of solvents:a--4 to 90% by weight, in relation to the total of constituents (a), (b) and (c), of a colloidal silica,b--9 to 95% by weight, in relation to the total of constituents (a), (b) and (c), of the product of hydrolysis and partial condensation of at least one trialkoxysilane;c--1 to 87% by weight, in relation to the total of constituents (a), (b) and (c), of the product of hydrolysis and partial condensation of at least one epoxidized trialkoxysilane;d--0.5 to 9% by weight, in relation to the total of constituents (a), (b) and (c), and (d), of a soluble melamine-formaldehyde and urea-formaldehyde resin.The varnish can optionally contain an acid hardener and secondary adjuvants such as dyes, film tension agents and agents for protection from light.The varnish in contact with the solid substrate to be coated is hardened by heating at about 120.degree. for a time not exceeding 2 hours.
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: March 22, 1988
    Assignee: Societe la Celliose S.A.
    Inventors: Alain Vantillard, Joel Pellenc, Claude Verne