Formulating PVC Polymeric Plasticizers Germany

  • Formulating PVC Polymeric Plasticizers Germany
  • Formulating PVC Polymeric Plasticizers Germany
  • Formulating PVC Polymeric Plasticizers Germany
  • Is PVC a flexible plasticizer?
  • Between 35 phr DOP and approx. 85 phr DOP (100% modulus 4.48 MPa or 650 psi), PVC is considered flexible Above 85 phr DOP, PVC is called highly flexible. When comparing the efficiencies of different plasticizers, substitution factors (SFs) compared to DOP are generally used.
  • How can PVC polymers be modified?
  • PVC polymers must be modified by the incorporation of appropriate additives for satisfactory processing and end-use performance.
  • How to choose a PVC polymer?
  • (a) PVC Polymer The main properties considered by the formulator in selecting the PVC polymer for a particular composition are the chemical nature (i.e. whether homopolymer or copolymer), molecular weight, particle characteristics (which can be of a special importance in processing), and quality (purity)-a significant factor in many applications.
  • What is a polymeric plasticizer?
  • Most polyester-type polymeric plasticizers are condensation products of glycols with dibasic organic acids. 1,3 buylene glycol and adipic acid are the most often used starting materials. C8 or C10 alcohols are commonly used for terminating the polymerizations at average molecular weights between 1,000 and 8,000.
  • Which polymers are used in PVC paste compositions?
  • For PVC paste compositions, paste grades of emulsion polymers are used, although suspension polymers are sometimes added as extender ('filler') resins: the use of PVC polymers in pastes is discussed in Chapter 18.
  • What additives are used to make flexible PVC?
  • Use of other additives, in addition to plasticizers, is essential to making successful flexible PVC products. These include stabilizers, pigments, fillers, lubricants, and many specialty additives such as fire retardants, anti-microbials, UV-screeners, and antistats for particular applications.

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