New melamine-formaldehyde-ketone resins. VI. Preparation of filled molding compositions and compression-molding materials from reactive solvents based on cyclohexanone

The conditions and a method of preparing new molding compositions and filled compression-molding materials from melamine formaldehyde cyclohexanone resins are described. The resins were obtained from melamine solutions in a reactive solvent prepared by the reaction of 1 mol of cyclohexanone with 7 mol of formaldehyde. The fillers were wood powder and sulfite cellulose. The thermal properties of the samples prepared from the compositions were studied with dynamic thermal analysis, thermogravimetry, and differential scanning calorimetry analysis. Selected mechanical properties [Brinell hardness, unnotched impact strength (Charpy method), and bending strength] of the cured resins were also measured. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 116: 2802-2807, 2010