Citroflex™ Products:
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Citroflex™ Plasticizers for Flexible PVC
What is Citroflex™?
Aurorium Citroflex™ portfolio of citric acid esters plasticizers for use in various plastic manufacturing applications and polymer systems.
Aurorium Citroflex™ delivers excellent plasticizer performances in aqueous- and solvent-based polymers, including acrylic, methacrylic, ethyl cellulose, hydroxypropyl methyl cellulose, vinyl acetates, vinyl chloride, and urethane polymer systems. Available in either hydrophilic or lipophilic esters, formulators control the polymer system characteristics to suit the finished product's needs better. Furthermore, their unique citrate ester characteristics provide environmentally friendly benefits for formulators. Aurorium citric acid esters provide powerful solvency, low order of toxicity, low volatility, high flash points, phthalate-free, and rapid biodegradability.
| Physical Properties | |||||
|---|---|---|---|---|---|
| Appearance | Clear liquid
|
Clear liquid
|
Clear liquid
|
Clear liquid
|
Clear liquid
|
| Odor | Essentially
odorless |
Essentially
odorless |
Essentially
odorless |
Essentially
odorless |
Essentially
odorless |
| Pour Point, °C | -45
|
-43
|
-62
|
-59
|
-55
|
| Viscosity @ 25°C, cps | 35
|
54
|
32
|
33
|
28
|
| Volatiles, % | 1.6
|
1.3
|
0.2
|
0.2
|
1.3
|
| Vapor Pressure, mm Hg @ 20°C | 6.4 x 10-³
|
5.7 x 10-³
|
9.6 x 10-2
|
5.2 x 10-2
|
1 x 10-9
|
| Flash Point (COC), °C | 155
|
188
|
185
|
204
|
204
|
| Solubility @ 25°C, g/100 ml in: | |||||
| Water | 5.5
|
0.72
|
<0.1
|
<0.1
|
<0.1
|
| Acetone | ∞
|
∞
|
∞
|
∞
|
∞
|
| Ethanol | ∞
|
∞
|
∞
|
∞
|
∞
|
| Heptane | Insoluble
|
Insoluble
|
∞
|
∞
|
∞
|
| Isopropanol | ∞
|
∞
|
∞
|
∞
|
∞
|
| Toluene | ∞
|
∞
|
∞
|
∞
|
∞
|
Citroflex™ in PVC Applications:
Phthalate plasticizers, including DEHP, have been the primary plasticizers used in polyvinyl chloride (PVC) based products for many years. Citroflex™ citric acid esters are excellent alternatives to phthalate-based plasticizers as they provide a better balance of physical properties and low volatility when used in PVC systems.
Aurorium citrate esters offer high tensile strength and elongation with reduced volatility and the plasticizer's migration rate. Citroflex™ is the ideal plasticizer for use in the following plastic applications:
- Food packaging films and plastics
- Vinyl resins used in toys
- Plastic tubes for medical applications and devices
Why Choose Citroflex™ Plasticizers For Your PVC Plastics
- Non-phthalate
- Improved heat and light stability
- Excellent compatibility (does not leech out of the resin)
- Non-toxic, low volatility and biodegradable
- FDA approved for food contact applications
- A long history of use with regulatory approvals for stringent end-use applications
Citroflex™ Comparative Plasticizer Performance
This formula demonstrates the performance of the Citroflex™ plasticizers in comparison with di-(2-Ethylhexyl) phthalate (DEHP) and di-(2-Ethylhexyl) adipate (DEHA).
The formulation composition
| Item | Description
|
Parts by Wt
|
|---|---|---|
| Resin | Geon 110X-500
|
100.00
|
| Plasticizer | Citroflex/Competition
|
50.00
|
| Stabilizer | Calcium/Zinc
|
2.50
|
| Lubricant | Stearic Acid
|
0.25
|
The performance of Citroflex™ plasticizers vs. DEHP and DEHA
| Characteristics | DEHP
|
DEHA
|
||
|---|---|---|---|---|
| Hardness | 79
|
78
|
78
|
81
|
| Tensile Strength, psi | 2748
|
1797
|
2862
|
2924
|
| Ultimate Elongation, % | 395
|
414
|
400
|
427
|
| 100% Modulus, % | 1368
|
1092
|
1348
|
1362
|
| Brittle Point, °C | -24.5
|
-56.5
|
-18.5
|
-33.5
|
| Volatile loss (air), % | 4.8
|
7.1
|
12.1
|
1.7
|
| Volatile loss (A/C), % | 3.4
|
7.6
|
7.0
|
1.4
|
| Water extraction, % | 0.7
|
1.5
|
1.2
|
1.7
|
| Soapy water extraction, % | 2.7
|
11.0
|
9.5
|
2.2
|
| ASTM Oil #3 extraction, % | 11.4
|
34.7
|
10.9
|
15.7
|
Citroflex™ Other Uses and Applications:
Recommendations Citroflex™ grade by application
| Medical Plastics | |||||
| Topical bandages | X
|
X
|
X
|
||
| Patch delivery systems | X
|
X
|
|||
| Aqueous pharmaceutical coatings | TEC-NF
|
ATEC, NF | TBC, NF
|
ATBC, NF
|
|
| Extra-corporeal tubing | X
|
X
|
|||
| Blood bags | X
|
||||
| Cellulosic molding resins | X
|
X
|
|||
| I.V. solution containers and sets | X
|
||||
| Catheters | X
|
||||
| Food Contact Products | |||||
| Food wraps and films (PVC & PVdC) | X
|
||||
| Beverage tubing | X
|
||||
| Crown liners | X
|
||||
| Food containers | X
|
||||
| Tinplate lubricant | X
|
||||
| Aluminum foil coatings | X
|
X
|
|||
| Dish detergent | X
|
||||
| Food Additives | |||||
| Whipping agent in dried egg whites | TEC, FCC
|
||||
| GRAS uses | TEC, FCC
|
||||
| Personal Care Products | |||||
| Fixative/Carrier for perfumes | X
|
X
|
|||
| Aerosol hair spray plasticizer | X
|
X
|
X
|
||
| Deodorant active | X
|
||||
| Solvent/plasticizer for Nail polish/ remover | X
|
X
|
|||
| Cellulosics | |||||
| Cigarette filters | X
|
||||
| Molded articles | X
|
X
|
|||
| Films | X
|
X
|
X
|
||
| Coatings | X
|
X
|
X
|
||
| Nitrocellulose-based explosives/ propellants | X
|
X
|
|||
| Other Industrial Uses | |||||
| Children’s toys | X
|
||||
| Animal ear tags | X
|
||||
| Ink formulations | X
|
X
|
X
|
||
| Defoaming agent | X
|
||||
| Adhesives | X
|
X
|
|||
| Pesticide Inerts | X
|
X
|
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