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:
Sep. 13, 1994
Filed:
Jun. 11, 1993
SKW Trostberg Aktiengesellschaft, Trostberg, DE;
Abstract
The present invention relates to modifying agents for melamine-formaldehyde resins and highly reactive thermosetting resins which are prepared with this agent and consist of 1 mol of melamine, 1.5 to 3.5 mol of formaldehyde, 0.5 to 5% by weight of a polyhydric alcohol, based on the melamine plus formaldehyde, and 0.5 to 10% by weight of the modifying agent, based on the liquid resin. The modifying agent can be added to the melamine-formaldehyde resin as a pulverulent mixture before or during the condensation reaction or in the liquid state in the form of a condensation product prepared in a known manner. The modifying agent consists of 10 to 75% by weight of dicyandiamide, 5 to 70% by weight of cold water-soluble starch (soluble between about 18.degree. and about 25.degree. C.) and 20 to 85% by weight of a guanamine. The highly reactive resins modified in this way are preferably used for coating chipboard and hardboard by a short cycle process.