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Acrylic processing aids

Rigid PVC is polymerized at 55-70°C and then compounded with organotin stabilizer, acrylic processing aid, lubricants, and optionally with rubbery impact modifier. [Pg.644]

The role that acrylic processing aids play in compound processability, end product properties and manufacturing efficiency has been reviewed (79). The functions of acrylic process aids, with very high molecular weight, have also been discussed from a rheological point of view (290). Co-stabilising process aids have also been developed (335). [Pg.18]

The primary particle size of Winnofil stearate coated precipitated calcium carbonate from Zeneca Resins is in the region of 0.075 micron. When compounded into natural and synthetic elastomers, the hydrophobic surface coating assists wetting and aids dispersion. When compounded into plasticised PVC for cable sheathing, the PCC allows for formulations with minimal potential for acid gas release in combustion conditions. In rigid PVC, stearate coated PCC has been used in compounding as an alternative to conventional acrylic processing aids and as a means to reduce impact modifier levels. [Pg.146]

PVC melts have a dry appearance, little strength, and lack of adhesion to a metal surface. Process aids are designed to change all these properties. Almost all rigid formulations and many flexible ones use acrylic process aids. Acrylic process aids are copolymers of methylmethacrylate with ethyl acrylate, butyl acrylate, or butyl methacrylate.Selection of monomers is important because it affects the glass transition temperature of copolymer, which should be lower than that of PVC to cause additive to melt below PVC process temperature and thus help to process it. [Pg.75]

Vinyl foam containing acrylic process aid. [Data from Lavaiiee,p.R., World Patent W02011041195, Apr. 7,2Q, Arkema Inc.]... [Pg.97]

Methacrylate-butyl acrylate process aid of this invention 1... [Pg.157]

See other pages where Acrylic processing aids is mentioned: [Pg.344]    [Pg.345]    [Pg.195]    [Pg.61]    [Pg.86]    [Pg.108]    [Pg.145]    [Pg.344]    [Pg.345]    [Pg.90]    [Pg.93]    [Pg.95]    [Pg.95]    [Pg.98]    [Pg.110]    [Pg.113]    [Pg.116]    [Pg.118]    [Pg.121]    [Pg.121]    [Pg.132]    [Pg.132]    [Pg.133]    [Pg.133]    [Pg.134]    [Pg.138]    [Pg.139]    [Pg.144]    [Pg.146]    [Pg.150]    [Pg.151]    [Pg.151]    [Pg.154]    [Pg.156]    [Pg.161]    [Pg.165]    [Pg.165]    [Pg.174]    [Pg.177]    [Pg.184]    [Pg.191]    [Pg.197]    [Pg.197]    [Pg.198]    [Pg.198]   
See also in sourсe #XX -- [ Pg.199 , Pg.200 ]



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