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Alkyl Pyrrolidones (specifically N-[C-8 to C-18]-2-Pyrrolidones) are strong solvating, general purpose PVC plasticizers, which are about 30-50% more efficient then the standard plasticizers, reduce processing temperatures dramatically and impart flexibility at extremely low temperatures.
They can be used as primary plasticizers, in plasticizer blends as well as at additive levels by all typical processing methods; extrusion, calendaring, injection molding, plastisol. They improve the compatibility of other components of the flexible PVC like fillers, extenders and other plasticizers like ESO, Polymerics, DINCH etc.
The described benefits and properties are carried proportionally to the blended systems, so that all formulation issues can be addressed by using Alkyl Pyrrolidones from as low as 1phr in plasticizer blends (decreasing processing temperatures and increasing gelling speed) ) to >80phr (for extremely flexible highly filled PVC with gum-like elasticity). Alkyl Pyrrolidones also provide new solutions for semi-rigid applications (e.g. at 6-12 phr) since they exhibit no anti-plasticizing behavior.
They are particularly useful in plastisol applications, where working with phthalate or phthalate-free plasticizer systems can cause various technical issues. By using Alkyl Pyrrolidones many of these problems can be overcome, since they increase gelling speed and transparency, reduce gelling temperatures and haze, improve de-aeration, enhance foam uniformity.
What advice can we give to the novice, vinyl technologist pursuing a career involving
formulating and processing vinyl plastic? All seasoned vinyl veterans have faced the
challenge of trying to explain why something unexpected came out of the processing
equipment. Is there some advice to help explain this? For me, there is one concept that
helps explain many of those occurrences. It can be summed up as follows:
Vinyl polymer and its additives are chemicals. Vinyl processing
equipment are reactors. When we process vinyl compounds, we produce
chemical reactions. Anticipate and understand these reactions.
Any article that is cited in another manuscript or other work is required to use the correct reference style. Below is an example of the reference style for SPE articles:
Brown, H. L. and Jones, D. H. 2016, May.
"Insert title of paper here in quotes,"
ANTEC 2016 - Indianapolis, Indiana, USA May 23-25, 2016. [On-line].
Society of Plastics Engineers
Available: www.4spe.org.
Note: if there are more than three authors you may use the first author's name and et al. EG Brown, H. L. et al.
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