Patents by Inventor Tatsuro KANEKO

Tatsuro KANEKO 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).

  • Publication number: 20200199406
    Abstract: A transparent coating film forming composition contains: (A) a polysilazane having units represented by the following formulae (1) and (2), and having predetermined modification rate and weight average molecular weight, (B) an organic solvent containing (B-1) and (B-2), (B-1) an organic solvent having a dielectric constant of 2.1 to 15.0 on average and a higher boiling point under atmospheric pressure (1013 hPa) than that of an organic solvent contained as the component (B-2), and (B-2) a saturated aliphatic hydrocarbon organic solvent; and (C) a predetermined curing catalyst. The mixing ratio of the component (A) and the component (B) satisfies a predetermined range. This provides a transparent coating film forming composition using an organic solvent having high polysilazane solubility, volatility at an appropriate speed during application, high safety and workability, the composition enabling formation of a coating film that is uniform and has high transparency and hardness after curing.
    Type: Application
    Filed: November 21, 2019
    Publication date: June 25, 2020
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Tatsuro KANEKO
  • Publication number: 20200024479
    Abstract: A polysilazane-containing composition includes: (A) a polysilazane containing units shown by the formulae (1) and (2), the ratio of the Si—R bond to the total number of the Si—H bond and the Si—R bond being 0.01 between 0.05, inclusive; and (B) an aliphatic hydrocarbon solvent. The proportion of (A)/(B) of the components is in a mass ratio range of 0.001 or more and 1.0 or less, R is selected from an aliphatic hydrocarbon group having 1 to 6 carbon atoms, an aromatic hydrocarbon group having 6 to 12 carbon atoms, and an alkoxy group having 1 to 6 carbon atoms. Each R may be the same or different in one molecule of the polysilazane. The polysilazane-containing composition with the polysilazane is readily soluble in an aliphatic hydrocarbon solvent to give a cured film having the same silica glass-like properties as those of the cured film of perhydropolysilazane.
    Type: Application
    Filed: July 3, 2019
    Publication date: January 23, 2020
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Tatsuro KANEKO