An innovative solution for clarified polypropylene was presented. RiKACLEAR PC1 was introduced as a new non-acetal sorbitol clarifier that provides low haze and excellent stiffness with superior long-term performance compared to current industry standards. Studies showed PC1 performs well at low dosing levels and has a wide processing window. It is a reliable and compatible clarifier that requires no plate-out. PC1 was approved by the FDA for use in food contact applications at concentrations up to 2500ppm. In conclusion, PC1 was presented as a complete clarifying solution for polypropylene with advantages over traditional clarifiers in clarity, mechanical properties, compatibility and regulatory compliance.

1. An innovative solution for clarified
polypropylene
International Polyolefins Conference,
Houston, 24th February 2009
Hieu-Dinh PHAN

2. Background
• Products Oleo, Plasticizers &
Speciality Chemicals
• Inventors of Acetal Sorbitol clarifiers
• Inventors of non-pigmenting Beta nucleator

3. RiKA International Limited
Established 1997
Manchester (UK)
• Product development
• Technical Service

4. Technical Capabilities
Compounding
Injection Molding
Blown Film Extrusion
Thermal analysis
Microscopy
Chemical analysis
Physical testing

5. History
DBS Mediocre thermal stability &
limited clarity
First Generation
MDBS Improved haze, higher thermal
stability but poor organoleptics
Second Generation
DMDBS Improved organoleptics,
but still acetal sorbitol
Third Generation
New Chemistry
DBN Sugar based technology,
RiKACLEAR PC1
high loading & plate-out
Fourth Generation

6. Old Technology Vs. New Chemistry
ACETAL-SORBITOLS
_ Sugar based
+ Clarity
+ Tc _ Yellowness
+ Mechanical Properties _ Inferior Organoleptics
_ Plate Out

7. RiKACLEAR® PC1
Non acetal-sorbitol
Low haze and excellent stiffness
Superior and robust long-term clarifier
No plate-out
Efficient low dosing clarifier
Reliable and compatible clarifier
Food contact applications

8. Content
1. PC1 Concentration study
2. PC1 Vs. current industry standard
3. PC1 Vs. new sugar-based clarifier
4. PC1 Applications
5. Regulatory Information

9. 1. RiKACLEAR PC1 as a low dosing clarifier HAZE
0.5mm 1mm
50
40
30
(%)
20
10
0
0 1000 1200 1400 1600 1800 2000
Concentration RiKACLEAR PC1

10. 1. RiKACLEAR PC1 as a low dosing clarifier FM
1000
800
600
(MPa)
400
200
0
Blank 1000ppm 1200ppm 1400ppm 1600ppm 1800ppm 2000ppm
Concentration RiKACLEAR PC1

11. 1. RiKACLEAR PC1 as a low dosing clarifier IZOD IS
6
5
4
(kJ/m2)
3
2
1
0
Blank 1000ppm 1200ppm 1400ppm 1600ppm 1800ppm 2000ppm
Concentration RiKACLEAR PC1

12. RiKACLEAR® PC1
2. PC1 Vs. current industry standard…
… in Random Copolymer
… in a long-term study
… in terms of processing window
3. PC1 Vs. new sugar-based clarifier
4. PC1 Applications
5. Regulatory Information

13. RiKACLEAR® PC1
2. PC1 Vs. current industry standard…
… in Random Copolymer
… in a long-term study
… in terms of processing window
3. PC1 Vs. new sugar-based clarifier
4. PC1 Applications
5. Regulatory Information

14. 2. PC1 Vs. industry standard in RACO HAZE 0.5mm
30
25
20
(%)
15
10
5
0
BLANK PC1 PC1 PHOSPHATE 3,4-DMDBS
1500ppm 2000ppm SALT 1000ppm 2000ppm

15. 2. PC1 Vs. industry standard in RACO FLEXURAL MODULUS
900
800
(MPa)
700
600
500
400
BLANK PC1 PC1 PHOSPHATE 3,4-DMDBS
1500ppm 2000ppm SALT 1000ppm 2000ppm

16. 2. PC1 Vs. industry standard in RACO YELLOWNESS INDEX
13
12
11
(YI)
10
9
8
7
6
BLANK PC1 PC1 PHOSPHATE 3,4-DMDBS
1500ppm 2000ppm SALT 1000ppm 2000ppm

17. RiKACLEAR® PC1
2. PC1 Vs. current industry standard…
… in Random Copolymer
… in a long-term study
… in terms of processing window
3. PC1 Vs. new sugar-based clarifier
4. PC1 Applications
5. Regulatory Information

18. 2. PC1 Vs. industry standard in RACO CRG HAZE 0.5mm
PC1 1500ppm PC1 2000ppm 3,4-DMDBS 1600ppm
16
14
12
10
(%)
8
6
4
2
0
0 10 20 30 40 50 60 70
DAYS

19. 2. PC1 Vs. industry standard in RACO CRG GLOSS 0.5mm
PC1 1500ppm PC1 2000ppm 3,4-DMDBS 1600ppm
100
95
90
85
(%)
80
75
70
65
60
0 10 20 30 40 50 60 70
DAYS

20. RiKACLEAR® PC1
2. PC1 Vs. current industry standard…
… in Random Copolymer
… in a long-term study
… in terms of processing window
3. PC1 Vs. new sugar-based clarifier
4. PC1 Applications
5. Regulatory Information

21. 2. Processing window PC1 Vs. industry standard HAZE 0.5mm
IM 410 IM 430 IM 450 IM 470 IM 490 IM 510
12
RACO
3,4-DMDBS in dashed line
10
8
(%)
6
4
PC1 in solid line
2
350 390 430 470 510
Ext. Temp (ºF)

22. 2. Processing window PC1 Vs. industry standard Summary
Low haze and excellent stiffness
Superior and robust long-term clarifier
Wide Processing Window

23. RiKACLEAR® PC1
1. PC1 Concentration study
2. PC1 Vs. current industry standard…
3. PC1 Vs. new sugar-based clarifier
… in a long-term study
… as a reliable and compatible clarifier
4. PC1 Applications
5. Regulatory Information

24. 3. PC1 Vs. new sugar-based clarifier in RACO HAZE 0.5mm
PC1 1500ppm PC1 2000ppm DBN 4000ppm
50
40
30
(%)
20
10
0
0 20 40 60 80 100
DAYS

25. 3. PC1 Vs. new sugar-based clarifier in RACO GLOSS 0.5mm
PC1 1500ppm PC1 2000ppm DBN 4000ppm
80
70
60
(%)
50
40
30
0 20 40 60 80 100
DAYS

26. RiKACLEAR® PC1
1. PC1 Concentration study
2. PC1 Vs. current industry standard…
3. PC1 Vs. new sugar-based clarifier
… in a long-term study
… as a reliable and compatible clarifier
4. PC1 Applications
5. Regulatory Information

27. 3. Contamination after additive replacement FM
100/0 95/5 80/20
1200
1100
1000
900
800
(MPa)
700
600
500
400
300
200
100
0
PC1/MDBS PC1/ 3,4- PC1/DBN 3,4-DMDBS 3,4-DMDBS DBN/MDBS DBN/ 3,4-
DMDBS /MDBS /DBN DMDBS

28. 3. Contamination after additive replacement HAZE 0.5mm
PC1/MDBS PC1/3,4-DMDBS PC1/DBN
3,4-DMDBS/MDBS 3,4-DMDBS/DBN DBN/MDBS
DBN/3,4-DMDBS
14
13
12
11
(%)
10
9
8
7
6
5
4
0 5 10 15 20 25
Concentration of 'impurity' (%)

29. 3. PC1 Vs. new sugar-based clarifier Summary
No plate-out
Efficient low dosing clarifier
Reliable and compatible clarifier

30. RiKACLEAR PC1
1. PC1 Concentration study
2. PC1 Vs. current industry standard
3. PC1 Vs. new sugar-based clarifier
4. PC1 Applications
5. Regulatory Information

31. 4. RiKACLEAR PC1 Applications
Injection Molding (RACO)

32. 4. RiKACLEAR PC1 Applications
Injection Molding (RACO)

33. 4. RiKACLEAR PC1 Applications
LLDPE Injection Molding
60
PC1 2000ppm
50
40
BLANK
(%)
30
20
10
0
0 500 1000 1500 2000 2500
PC1 Concentration (ppm)

34. RiKACLEAR PC1
1. PC1 Concentration study
2. PC1 Vs. current industry standard
3. PC1 Vs. new sugar-based clarifier
4. PC1 Applications
5. Regulatory Information

35. Regulatory Information
• FDA Clearance
Max. Concentration: 2500ppm
Conditions: A-H
Contact with all food types

36. RiKACLEAR PC1 – The complete solution
3,4-DMDBS DBN PC1 Haze
Organoleptics FM / Impact balance
Compatibility Plate-out
Processing window CRG
Long-term
Clarifier concentration
performance

37. THANK YOU!
Website http:// www.rikaltd.com
Product data http://www.ppadditives.com