Compounding — Process Challenge

Weichmacher für flexibles PVC (Durometer / Phthalatfrei)

Compoundierer für flexibles PVC und Kautschuk dosieren Weichmacher-Ester per IBC und Isotank zur Solvatisierung des Harzes und zur Erreichung einer Zielhärte sowie Tieftemperaturflexibilität. Viele wechseln aktiv von Orthophthalaten (DEHP/DBP) zu nicht-phthalatischem DOTP und bio-basiertem ESBO/Citraten, um REACH-, CPSIA- und Lebensmittelkontaktanforderungen zu erfüllen
Updated Jun 2026
Lösungsansatz

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Formulation Workflow
1
Polymer & Process Definition
Identify the resin and process (extrusion, molding, film) and the targets — thermal stability, clarity, flame retardance, slip, or color.
2
Additive Selection
Match stabilizers, antioxidants, plasticizers, lubricants, flame retardants, or masterbatch carriers to the polymer and processing temperatures.
3
Compounding Trial
Confirm loading and dispersion on a compounding or molding trial, checking processability, mechanicals, and aesthetics against the control.
4
Validation & Scale-Up
Verify long-term performance (heat aging, migration, weathering) and lock the formulation, packaging, and lot specs for production.
Recommended Chemistries (6)
Dioctyl Terephthalate (DOTP)
CAS 6422-86-2
Spezialadditive
Weichmachung
Non-ortho-phthalate terephthalate diester; solvates PVC chains to lower Tg and durometer and serves as the leading regulatory-safe drop-in replacement for DEHP
Physical Description: Pellets or crystals or liquid   Siedepunkt:383 °C   Schmelzpunkt:-48 °C
Schnellansicht
Alle Details
Diisononyl Phthalate (DINP)
CAS 28553-12-0
Spezialadditive
Schmierung
High-molecular-weight branched-C9 ortho-phthalate; low volatility gives good permanence at the high loadings used for soft flexible PVC
Physical Description: Di-isononyl phthalate is an oily colorless liqu…   Appearance: Colorless liquid   Siedepunkt:78 °C at 760 mmHg
Schnellansicht
Alle Details
Epoxidized Soybean (ESBO)
CAS 8013-07-8
Spezialadditive
Emollienz
Bio-based secondary plasticizer and co-stabilizer; the epoxide rings scavenge HCl liberated during PVC processing while adding flexibility
Schnellansicht
Alle Details
Triethyl Citrate
CAS 77-93-0
Spezialadditive
Weichmachung
Citrate-ester non-phthalate plasticizer used where regulatory-sensitive, food-contact-grade flexibility is required
Physical Description: practically colourless, oily liquid; bitter tas…   Appearance: Colorless, mobile liquid   Odor: Fruity odor
Schnellansicht
Alle Details
Acetyl Tributyl Citrate (ATBC)
CAS 77-90-7
Non-phthalate citrate ester with higher permanence than triethyl citrate; the standard choice for toy and food-contact flexible PVC (source on demand)
Schnellansicht
Alle Details
Dioctyl Adipate (DOA)
CAS 103-23-1
Adipate ester with a low glass-transition contribution, delivering cold-flex low-temperature flexibility for films and tubing (source on demand)
Schnellansicht
Alle Details
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