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 earliest known surname recording from any country is believed to be that of Thomas Henery of Kent, England, in the year 1275. This was during the reign of King Edward 1st, known as The Hammer of the Scots, 1272 - 1307. Â© Copyright: Name Origin Research www.surnamedb.com 1980 - 2017.