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 Josepsone, which was dated 1332, the Subsidy Rolls of the county of Cumberland, during the reign of King Edward 111, known as 'The father of the Navy', 1327 - 1377.Surnames became necessary when governments introduced personal taxation.ts popularity is mainly as a result of 'Crusader' 12th century influence, when soldiers returning from the famous expeditions to free the Holy Land, named their children after the famous early Christians and in commemoration of their fathers exploits.