Introduction of U-100 insulin.

Cogswell, J J; Simpson, Rosemary Michelle

doi:10.1136/bmj.280.6213.566-a

Cited by 1 publication

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“…To overcome this discrepancy, Hutchinson and Blanchard [16] proposed to heat up the tip of the extrusion die so that only the surface layer of the extrudate is heated up and therefore bubble instability is reduced. Quite opposite, Cogswell [17] proposed to cool down a surface layer of the extrudate at the die exit to temperatures not more than 158C above its solidification point to delay an onset of the sharkskin melt fracture. In extrusion of polymers with narrow MWD, e.g.…”

Section: Advantages Of Extrusion Of Polyolefin Resins At Reduced Tempmentioning

confidence: 99%

Low viscous hydrophilic processing additives for extrusion of polyethylene at reduced temperatures

Kulikov

Hornung

Wagner

2010

Polymer Engineering & Sci

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Industry is using fluorinated polymer processing additives (PPA) to delay the onset of sharkskin to higher rates of extrusion of PE resins. Yet it is necessary to keep elevated temperatures during extrusion to reduce apparent melt viscosity. We propose to use low viscous PPA made from reacting mixtures of polyethylene glycol with organic polyacids, phosphoric acid, and polyesters of oxiacids of Phosphorus. Surprisingly, extrusion pressures and apparent viscosity with the novel PPA at reduced temperatures are less, than at elevated temperatures. In total, extrusion pressures can be reduced 2-5 times for concentrations of PPA from 0.1 to 0.5 wt%, while sharkskin melt fracture can be eliminated for concentrations of PPA above 0.02 wt%. Extrusion with the novel PPA at reduced temperatures potentially increases productivity, reduces production cost, and allows processing of PE resins of higher MW and highly filled polymer composites.The use of novel PPA is a challenging opportunity to simplify processing of PO resins. The use of low viscous PEG in the composition of PPA with existing machinery has to be combined with changes in the die design for film blowing, blow molding, and pipe extrusion to extract

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Section: Advantages Of Extrusion Of Polyolefin Resins At Reduced Tempmentioning

confidence: 99%

Low viscous hydrophilic processing additives for extrusion of polyethylene at reduced temperatures

Kulikov

Hornung

Wagner

2010

Polymer Engineering & Sci

View full text Add to dashboard Cite

show abstract

Introduction of U-100 insulin.

Abstract: On the other hand, syncope, angina, or dyspnoea at the end of exercise should raise the question of dynamic subaortic stenosis of hypertrophic obstructive cardiomyopathv.

Cited by 1 publication

References 3 publications

Low viscous hydrophilic processing additives for extrusion of polyethylene at reduced temperatures

Low viscous hydrophilic processing additives for extrusion of polyethylene at reduced temperatures

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