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Potential Improvements in Phenolic Resins using PPO® Resin

IP.com Disclosure Number: IPCOM000020297D
Publication Date: 2003-Nov-11

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The IP.com Prior Art Database

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Abstract

PPO® SA120 resin is a new low molecular weight (Mn »2500) polyphenylene-ether (PPE) resin recently commercialized by GE Plastics as a polymer additive. In addition to having the well-known properties inherent to PPE, this new resin has an excellent thermal performance--glass transition temperature (Tg) of 165°C combined with a characteristic feature of improved processability. Since both are phenol based, phenolic resins have similar key properties as PPE such as high heat, excellent dielectric strength, and inherent flame retardance. Adding PPE to phenolic resins like novolacs can create a tougher polymer. Other advantages may also be obtained such as decreased crosslinking density or reduced volatiles. High performance areas including automotive underhood applications can be a good fit for PPE in phenolics, although many application areas exist. A PPE-phenolic copolymer could probably be processed the same as normal phenolic resins. The low molecular weight of the new PPE resin allows PPE to be more easily processed in substantially high amounts in phenolic resin systems (i.e. neat resin composition or composite). Key Words: polyphenylene oxide, polyphenylene ether, PPE, phenolic resins, phenol, toughness, novolac, low molecular weight