The use of a new low smoke, heat distortion temperature modifier for rigid PVC and chlorinated PVC is discussed. This material, CN-1427, is a tetrabromobisphenol A carbonate oligomer which is compatible with vinyl compositions. The carbonate oligomer can be compounded into PVC resin to improve heat distortion temperature of PVC and CPVC by 20â30Â°C.
Oppong is an Ashanti surname that originates in the Ashanti City-State. Notable people with the Ashanti surname include: Dominic Oppong (born 1986), Ghanaian-born Canadian soccer player.
Rippon presented radio and television news programmes in South West England before moving to BBC One 's Nine O'Clock News, becoming a regular presenter in 1975.ippon was born in Plymouth, Devon, into a working-class family. Her father, John, was a Royal Marine; she first saw him in 1947 when he returned from World War II. Rippon's Scottish mother, Edna, worked at a fine china company called Lawley's and was also a seamstress. She attended a girls' grammar school in Plymouth.