Poly (alkylene oxide) reinforced modified phenol-aldehyde resin and the preparation process for the same

• Main Authors: WU, HOU-DE, MA, JEN-JI, LI, JR-TSUNG
• Format: Patent
• Language: English
• Published: 21.03.2001
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

This invention relates two types of poly (alkylene oxide) reinforced modified phenol-aldehyde resin: a resol type and a novolac type phenolic resin. The resol type phenolic resin includes (a) a poly (alkylene oxide) with average molecular weight of about 100,000-8,000,000; (b) a phenol; (c) a acid catalyst; and (d) a resol type phenolic resin, which contains 60-75 weight percentage (wt%) solid component and 5-10 wt% free formaldehyde. Based on the weight of component (d), component (a), (b) and (c) weight at 2-10%, 2-15% and 2-10%, respectively. The novollac type reinforced modified resin includes above (a), (b) and (d') a novolac type phenolic resin with a viscosity of about 300 cps at 25 DEG C. Based on the weight of component (d'), component (a) and (b) weight at 2-10% to 2-15%, respectively. The reinforced novolac type modified phenolic resin might contain about 10% hardener for future application. The preparation process for the resin is also enclosed.