1,2,3-propanetricarboxylate, 2-hydroxy-, titanium(4+) salt (1:1)

Details:

SR610 is a revolutionary new catalyst for the production of high intrinsic viscosity polyethylene terephthalate (PET >0.70 dl/g) with unique thermo-oxidative stability and outstanding physical properties.

While titanium catalysts for PET have been investigated for over three decades, limitations in use of current Ti-PET as a result of thermal instability during processing at high IV are well known, and this has restricted existing catalysts to lower IV PET fibre and film applications. The industry has also suffered from the process limitations of titanate catalysts, particularly linked to solid state polymerisation rates.  Through Shandong East Sunrise research and development in the field of organic titanates for PET applications, a viable titanium catalyst is now available.

Advantages

• Improved thermo-oxidative stability compared to antimony-PET
• Lower chip acetaldehyde content and reduced AA generation during processing, which also improves glycol efficiency
• Brighter polymer with reduced haze
• Lower crystallinity chip allowing for up to 40% energy reduction on melt processing. This can allow for isophthalic acid reduction/elimination
• Increase in PET crystallisation temperature allowing for higher temperature filling
• Increased crystallinity in blown bottle side walls increasing strength and improving barrier properties
• Alternatively, increased crystallinity in blown bottle side walls allowing for bottle light weighting
• Antimony free catalyst formulation
• Full function for high IV PET, without compromise, in both solid state polymerisation and in melt to resin process technology