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. 19, 1987
Filed:
Sep. 24, 1986
Frank P Woerner, Wachenheim, DE;
Peter Neumann, Wiesloch, DE;
Harald Mahnke, Ludwigshafen, DE;
Josef Lamprecht, Frankenthal, DE;
Dieter Horn, Heidelberg, DE;
Gerhard Turznik, Ludwigshafen, DE;
Friedrich Kraus, Bensheim, DE;
Hanshelmut Kaeppel, Weinheim, DE;
Eduard Heim, Worms, DE;
BASF Aktiengesellschaft, , DE;
Abstract
Resilient foams based on melamine resins are prepared by foaming an aqueous solution which contains a melamine/formaldehyde precondensate, an emulsifier, a volatile blowing agent and a curing agent and then curing the foam. In this process, from 0.2 to 4% by weight of an alkali metal, alkaline earth metal or aluminum salt of an organic, preferably polybasic acid, of a polyphosphoric acid or of a boron acid are added to the aqueous solution.