Click for PDF View TDS
Technical Data Sheet
Picco™ AR-85 Hydrocarbon Resin


Applications
  • Adhesives/sealants-B&C
  • Bookbinding
  • Carpet construction
  • Case and carton closures
  • Commerical printing inks
  • Packaging tape
  • Polymer modification
  • Protective coatings
  • Road asphalt
  • Roofing
  • Specialty tape
  • Wire/cable
Key Attributes
  • Broad compatibility and solubility
  • Non-reactive
  • Reinforcing tackifier resin for many polymers used in the adhesive industry

Product Description
Picco™ AR-85 hydrocarbon resin is a low molecular weight, modified aromatic hydrocarbon resin. This resin has good solubility in aliphatic and aromatic hydrocarbons and is compatible with a wide variety of thermoplastic and elastomeric polymers. Picco AR-85 is utilized in EVA-based woodworking adhesives. In addition, it is widely used in pressure sensitive adhesives, particularly in systems containing natural rubber or SBR. It offers an excellent balance of tack, adhesion and cohesive properties. In styrenic block copolymer-based adhesives Picco AR-85 preferentially associates the styrenic end blocks, producing lower melt viscosity while maintaining room-temperature cohesion without affecting tack and adhesion properties.

Typical Properties

PropertyaTest MethodbTypical Value, Unitsc
General
Ring and Ball Softening PointASTM E 2886 °C
Color, GardnerdASTM D 61669
Density 
     @ 25°C 1.05 kg/dm3
Bromine Number 15 g/100g
Molecular Weighte 
     Mn 510
     Mw 680
     Mw/Mn 1.3
     Mz 1020
Melt Viscosityf 
     @ 120°C 2800 cP
     @ 140°C 400 cP
     @ 160°C 100 cP

aUnless noted otherwise, all tests are run at 23°C (73°F) and 50% relative humidity.
bUnless noted otherwise, the test method is ASTM.
cUnits are in SI or US customary units.
d50% resin solids in toluene.
eMolecular weight measured via Gel Permeation Chromatography (GPC) using polystyrene standards, elution with THF.
fBrookfield, LVT, spindle 31



Compatibility and Solubility
Compatible at all ratios, or in limited but practically useful proportions, with natural and synthetic rubbers, including SBR (styrene-butadiene rubber), SIS (styrene-isoprene-styrene) and SBS (styrene-butadiene-styrene) block copolymers, EVA resins (ethylene vinyl acetate copolymers), low molecular weight polyethylene, and paraffin and microcrystalline waxes.

Soluble at all useful proportions in aliphatic, aromatic and chlorinated hydrocarbons, esters and ethers. Insoluble in alcohols, glycols and water.

Packaging
Picco™ AR-85 hydrocarbon resin is pastillated and packed in polyethylene bags of 25 kg net, and supplied on shrink-wrapped pallets of 40 bags (1000 kg) each, from Eastman facilities in the Netherlands and from warehouses located in Europe.

Storage
Due to the thermoplastic behavior, pastillated and flaked resins may fuse, block or lump. This can be accelerated under any of the following conditions: 1) above ambient temperature 2) prolonged storage 3) pressure, e.g., stacking pallets, or a combination of these conditions. This is particularly applicable for low softening point resin grades. In order to maintain the flake or pastille shape, we therefore recommend storing the material in a temperature-controlled area, be careful with stacking material or applying pressure and preventing prolonged storage. It should be noted that lumping does not have a negative impact on the product specifications. Due to the nature of the product, claims regarding lumping cannot be accepted. Resins are prone to gradual oxidation, some more so than others. This could result in darkening and/or it could have an adverse effect on the solubility of the resin in organic solvents or on its compatibility with polymers. Accordingly, it is recommended that strict control of inventory be observed at all times, taking care that the oldest material is used first.

Picco™ AR-85 hydrocarbon resin material will remain within product specification limits, as mentioned in the sales specification sheet, for a period of at least twelve months after shipment from Eastman production facilities in The Netherlands, provided storage conditions outlined in this data sheet are observed. However, as we can neither anticipate the conditions under which the resin is processed nor the end use applications for which it is used, the product should be reanalyzed for critical properties at the end of its shelf life to see if it meets specification for use.

Comments
Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.


Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.


12/7/2020 9:49:41 AM