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.
The first recorded spelling of the family name is shown to be that of John Arnoud, which was dated 1279, in the Hundred Rolls of Cambridgeshire, during the reign of King Edward 1, known as The Hammer of the Scots, 1272 - 1307. Surnames became necessary when governments introduced personal taxation.