Patents Assigned to Santee, Inc.
  • Dry process for bonding silica-rich plant materials
    Patent number: 6610228
    Abstract: Particles of silica-rich plant material are bonded into a rigid unitary body. The silica content of such materials is believed to enter into bonding reactions when the materials are combined with a polymeric resin base material such as PAPI that has been previously converted by reaction with a colloidal gel formed from silica and a basic solution. The resulting product exhibits characteristics superior to most engineered wood products. A theoretical analysis of the bonding chemistry is proposed.
    Type: Grant
    Filed: January 3, 2001
    Date of Patent: August 26, 2003
    Assignee: Santee, Inc.
    Inventor: Charles L. Capps
  • Method for preparing binder materials containing diisocyanates
    Patent number: 6433059
    Abstract: A method for preparing a binder material for cellulosic products which comprises providing a polymeric resin base material preferably comprising 4,4′ or 2,4′ methylene diphenylene diisocyanate in the range of from about 20% to about 55% by weight and a functionality greater than about 2, forming a colloidal gel from silica and a basic solution, and incorporating the colloidal gel into the polymeric base material at a temperature, rate of addition and agitation level to achieve a substantially homogeneous binder material.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: August 13, 2002
    Assignee: Santee, Inc.
    Inventor: Charles L. Capps