The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 1983
Filed:
Jan. 29, 1982
Kenneth G McDaniel, Round Rock, TX (US);
George P Speranza, Austin, TX (US);
Texaco Inc., White Plains, NY (US);
Abstract
An improved method for the production of polyols useful in the application of sprayed high density polyurethane foams is described. The improvement involves varying the formaldehyde to phenol mole ratio to range between 1.25:1 to 1.75:1 to produce a polyol with the desired viscosity. Ordinarily such polyols are prepared by reacting 4.65 to 5 moles of propylene oxide with 1 mole of the Mannich reaction product of a mole of phenol or nonylphenol with 1 or 2 moles of diethanolamine and 1 or 2 moles of formaldehyde. It is particularly surprising that such changes in the formulation may be made without adversely affecting the resultant properties of the spray foam.