Patent ID: 6646094
Filing Date: 2003-11-11
Classification: C03C,C08G,C08K,C08L

Abstract:
A process for preparing a water-soluble resin for mineral fibers, the process comprising reacting three components: (1) at least one hydroxy-functional aromatic compound, (2) at least one reactive aldehyde, and (3) at least one basic polymerization catalyst; the process including:a) preparing an initial aqueous mixture including at least one hydroxy-functional aromatic compound and a second component selected from the group comprising (1) at least one reactive aldehyde and (2) at least one basic polymerization catalyst; b) feeding the third component to the initial aqueous mixture while the temperature of the aqueous mixture is maintained from about 50Â° C. to about 75Â° C.; the mole ratio of total catalyst to hydroxy-functional aromatic compound being at least 17 moles catalyst per 100 moles hydroxy-functional aromatic compound; c) maintaining the temperature of the aqueous mixture in a range from about 50Â° C. to about 75Â° C. until a predetermined endpoint is achieved; and d) cooling the aqueous mixture.