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rubber scorch retarder ctp pvi for rubber and tyre industry
rubber scorch retarder ctp pvi for rubber and tyre industry
rubber scorch retarder ctp pvi for rubber and tyre industry
rubber scorch retarder ctp pvi for rubber and tyre industry
rubber scorch retarder ctp pvi for rubber and tyre industry
  • What is the use of Scorch retarder?
  • Scorch retarder for synthetic rubber and natural rubber. It can be used in combination with all sulfenamide or thiazole accelerators to control the safety of operation and prevent early vulcanization without affecting the vulcanization characteristics and performance of the vulcanizate.
  • How long have we been making Scorch retarders?
  • After more than 30 years of development, we have transformed from a company producing single scorch retarder into a professional manufacturer of rubber accelerators, antioxidants, scorch retarders, plasticizers, adhesives, anti-fatigue and various processing aids.
  • Does CTP reduce natural rubber reversion?
  • SAFE will reduce natural rubber reversion on overcure. CTP has no effect on reversion. • One way to improve scorch and cure speed in a thiazole (MBT, MBTS) accelerated compound is to add a small amount of OBTS sulfenamide. An SBR (Compound B in Appendix) with MBTS and DPG acceleration had standard retarders, as well as OBTS added to it.
  • Are rubber retarders worth it?
  • Yet retarders are consumed in the rubber business every year. While there is fact that retarders are sometimes quick-fix bandages for problem stocks, variety of situations makes them a critical component of a rubber compounder’s technology. cost is not prohibitive. Of course, no retarder meets all these qualities.
  • Which sulfenamide retarder should I Choose?
  • However, the sulfenamide (SFA) retarders cost more; thus, a cost/performance consideration must be made when choosing a retarder. CTP (better known as “PVI”) is an outstanding retarder at low concentrations (a predispersed masterbatch may be preferred for more precise weigh-ups and improved dispersion).
  • Is CTP a good thiazole retarder?
  • CTP is a very powerful retarder with sulfenamides. SAFE is good while PX and AK are modest retarders with a sulfenamide. BAX and SAX have little effect. Little advantage is gained by using CTP or SAFE with a thiazole. Cost effectiveness would go to the acid retarders.
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