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Technical Data Sheet
Kristalex™ 3105SD Hydrocarbon Resin


Applications
  • Adhesives/sealants-B&C
  • Automotive
  • Building & construction hotmelts
  • Hygiene adhesives
  • Labels non food contact
  • Packaging tape
  • Rubber modification
  • Specialty tape
Key Attributes
  • Excellent thermal stability
  • Intermediate softening point
  • Low odor
  • Low organic volatile content
  • Made from pure aromatic monomers
  • Suitable for use in food contact applications
  • Water-white initial color

Product Description
Kristalex™ 3105SD hydrocarbon resin complies with many FDA regulations for applications involving food contact. It is a water-white, highly color stable, nonpolar, low molecular weight thermoplastic polymer with low organic volatile content and excellent thermal and oxidative stability. This resin is compatible with a wide variety of oils, waxes, alkyds, plastics, and elastomers, and is soluble in many common organic solvents. It is indicated for use in adhesives, coatings, and heat seal lacquers. Compliance with a given regulation in a specific situation should be verified prior to use in a food contacting application.





In EVA-based hot melt adhesives Kristalex 3105SD has useful compatibility with EVA grades with up to 30% vinyl acetate and is useful in formulating low-color, low odor adhesives with good low temperature properties. In styrenic block copolymer based adhesives Kristalex 3105SD preferentially associates with the styrenic endblocks, producing higher room-temperature cohesion without affecting tack and adhesion properties.


Typical Properties

PropertyaTest MethodbTypical Value, Unitsc
General
Ring and Ball Softening PointASTM E 28105 °C
Total Organic Volatile Contentd <300 ppm
Color, Yellowness IndexeASTM E 3139
Cloud Pointf 
     MMAP 4 °C
     OMS 58 °C
Molecular Weightg 
     Mn 810
     Mw 1440
     Mw/Mn 1.8
     Mz 2,420
Melt Viscosityh 
     1 poise 205 °C
     10 poise 165 °C
     100 poise 135 °C
     1000 poise 105 °C
Glass Transition Temperature (Tg)i 55 °C

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.
dTotal volatile content measured by High Performance Liquid Chromatography (HPLC)
e50% solids in toluene, 50 mm path length, Illuminant C, and a 2° observer.
fCloud point temperature testing by Eastman methods. MMAP from 1:2 vol:vol mixture of methylcyclohexane and aniline. OMS from odorless mineral spirits.
gMolecular weight measured via Gel Permeation Chromatography (GPC) using polystyrene standards, elution with THF.
hData measured by Brookfield RVT Viscometer with Thermosel
iGlass transition temperature by differential scanning calorimetry, 20°C/minute.



Compatibility and Solubility
Compatible in useful proportions with a wide variety of materials, including styrene-butadiene rubber (SBR) and SBR block copolymers; neoprene, nitrile, polybutadiene, and acrylic polymers; chlorinated rubber; ethylene-vinyl acetate (EVA) resins; styrenated, vinylated, and drying oil alkyds; rosin ester resins; and ethyl hydroxyethyl cellulose (EHEC), as well as modifying the styrenic endblocks of all styrene-containing block copolymers.

Soluble in aliphatic, aromatic, and chlorinated hydrocarbons; esters; and ketones. Insoluble in alcohols and glycols; limited solubility in nitroparaffins. For low or zero VOC systems Kristalex™ 3105 is soluble in the VOC exempt solvents acetone, methyl acetate, t-butyl acetate (TBA) and perchlorobenzenetetrafluoride (PCBTF) and will tolerate some acetone and/or methyl acetate as a diluent in solvent systems based on TBA and/or PCBTF. VOC exemptions and environmental regulations vary regionally and compliance with local standards should be verified before any claims about VOC content are made.

Packaging
Pastilles in multi-wall paper bags (50 lbs, 22.7 kg net wt).

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.

The useful life of this product can be affected by storage and handling conditions. When stored in the original unopened container in an enclosed area and protected from moisture, extreme temperatures and contamination, the shelf life of this product is estimated to continue to meet applicable sales specifications for 3 years from the date of manufacture. Shelf life is a guide not an absolute value. 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.


1/15/2021 5:36:13 AM