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.
If Iâm not mistaking, Oma and Opa are used primarily in by German and Dutch speaking children. I think the names actually come from northern Germanic languages (where they mean Grandma and Grandpa) and they got passed down to what we know today. *This is my personal knowledge from what I encountered in my experience.