Patents Assigned to Dynea Canada Ltd.
  • Patent number: 6881814
    Abstract: Phenolic resins and processes of making these phenolic resins that are useful for making binders for mineral wool insulation products are disclosed. The addition of a boron salt early in the process of making these phenolic resins leads to enhanced properties such as a reduction in the amount of tetradimers and an improvement in the stability of both the base resin and the pre-react.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: April 19, 2005
    Assignee: Dynea Canada Ltd.
    Inventors: Kwok Tang, Ruben A. Santos, Bohumila Zapletal
  • Patent number: 6620215
    Abstract: The present invention is drawn to a composition comprising abrasive particles comprising an organic resin for chemical mechanical planarization (CMP), which can be widely used in the semiconductor industry. The abrasive composition is an aqueous slurry comprising abrasive particles comprising an organic resin, wherein the slurry is held at a pH in the range of 2-12. An attractive feature of the inventive abrasive composition is that it can be tailored to selectively remove different components from the surface. The inventive abrasive composition also provides efficient polishing rates and good surface quality when used in CMP applications.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: September 16, 2003
    Assignee: Dynea Canada, Ltd.
    Inventors: Yuzhuo Li, Guomin Bian, Kwok Tang, Joe Zunzi Zhao, John Westbrook, Yong Lin, Leina Chan