company tower banner
Wacker Chemie AG Company Logo

VINNAPAS® LL 8251

1 of 218 products in this brand
VINNAPAS® LL 8251 is a solid copolymer of vinyl acetate and crotonic acid, ranging in color from colorless to pale yellowish. It finds typical applications in fiber reinforced plastics and resin modification for composites. The product is available in the form of solid flakes.

Functions: Shrinkage Reducing Agent

Chemical Family: Vinyls, Vinylics & Vinyl Derivatives

Processing Methods: Pultrusion, Resin Transfer Molding (RTM)

Knowde Enhanced TDS

Identification & Functionality

Composite Materials Functions

Features & Benefits

Applications & Uses

Composites Processing Methods
Applications
  • Low-Profile Additive (LPA)
  • Modifier for Thermoplastic Resins
  • Sheet Molding Compound
  • Bulk Molding Compound
  • Pultrusion
  • RTM

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Brookfield Viscosity (Solid Content 40% in styrene, 20 rpm, PML 002, at 23°C)300mPa.sBrookfield Viscometer
Brookfield Viscosity (Solid Content in styrene 50%, 20 rpm, PML 002, at 23°C)1200mPa.sBrookfield Viscometer
Bulk Densityapprox. 700 kg/m³DIN 53466
Brookfield Viscosity (Solid Content in styrene 60%, 20 rpm, PML 002, at 23°C)9200mPa.sBrookfield Viscometer
Density (of the polymer)approx. 1.20 g/cm³DIN EN ISO 1183 /1-3
Melt Viscosity (100% Polymer, at 100°C)approx. 2600 Pa.sBohlin high temperature viscosimeter
Glass Transition Temperatureapprox. 37 °CDSC (DIN 53765 / ISO 11357-5)
Melt Viscosity (100% Polymer, at 120°C)approx. 210 Pa.sBohlin high temperature viscosimeter
K-Valueapprox. 25DIN 53726
Melt Viscosity (100% Polymer, at 140°C)approx. 50 Pa.sBohlin high temperature viscosimeter
Molecular Weight (Mw)approx. 30000 g/molSEC, PS-Standard
Softening Pointapprox. 101°CASTM D 3104
Volatile Contentmax. 0.5 wt %Specific method
Specifications
ValueUnitsTest Method / Conditions
Acid Number6.0 - 9.0 mg KOH/gSpecific Method
Viscosity (at 20°C, in 10 % ethyl acetate)2.0 - 2.3 mPa·sASTM D 445 - 06

Regulatory & Compliance

Packaging & Availability

Country Availability
Packaging Type
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania