Home About
Case Studies News Careers R&D Responsibility Contact
External Donor

External Donor Systems

Silane-based donor systems for stereoregularity control and PP catalyst-system performance.

99.5%
Purity Minimum
188.34
Molecular Weight
66°C
Flash Point
0.01%
Water Maximum

Technical Positioning

External Donor (Donor C) is positioned as a catalyst-system component used with Ziegler-Natta PP catalyst systems to support stereoregularity control, isotactic index adjustment, resin property consistency, and catalyst selectivity.

Stereoregularity Control

Donor C supports isotactic index adjustment inside the PP catalyst system.

System Interaction

Performance depends on catalyst type, TEAL, donor ratio and reactor conditions.

Property Consistency

Supports stiffness/clarity balance and resin property repeatability when selected correctly.

Quality Sensitivity

Moisture, methanol and purity are critical control points for application confidence.

Key Specification Fields

Chemical NameCyclohexylmethyldimethoxysilane — product identity and system matching
FormulaC9H20O2Si — chemical reference
Density0.947 at 25/25°C — receiving and product control reference
Methanol0.03 wt% max — impurity control for system stability

External donor performance is optimized through catalyst, TEAL and operating-window alignment.

Where It Is Used

How Selection Works

Donor selection is reviewed against:

Catalyst type TEAL condition Donor ratio discussion Resin target Isotacticity requirement MFR target Reactor condition Grade transition need Moisture sensitivity Purity and impurity control

Related Technical Pathways

Related Case Studies

Prepare a Technical Product Inquiry

To support faster and more accurate product discussion, customers may share:

Catalyst system
Polymerization process
Product form requirement
Handling readiness
Safety documentation requirement
Quantity
Destination
Other Products

Need full technical datasheets or a sample?