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.
Last name origins & meanings: 1  Portuguese: habitational name from Porto (Oporto). 2  Spanish: habitational name from any of the numerous places, especially in Galicia, named Porto, usually in the sense âmountain passâ. Spanish: habitational name from any of the numerous places, especially in Galicia, named Porto, usually in the sense âmountain passâ. 2  Italian: habitational name from any of numerous minor places named or named with Porto, from porto âportâ, âharborâ.