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Technical Data Sheet
Lewisol™ 29-M Resin

  • Adhesives/sealants-B&C
  • Carpet construction
  • Commerical printing inks
  • Film modification
  • Paints & coatings
  • Polymer modification
  • Protective coatings
  • Road markings
  • Roofing ingredients
  • Solder flux
  • Tires
  • Wax ingredients
  • Wire/cable

Product Description
Lewisol™ 29-M resin is a glycero-ester of rosin modified with maleic anhydride. This is a hard, thermoplastic resin with particularly low color that offers excellent solubility, good solvent evaporation, good resistance to oxidation and low viscosity in solution for making RS Nitrocellulose lacquers. These and other properties make Lewisol™ 29-M resins particularly suitable for use in lacquers, low temperature heat cured enamels; RS Nitrocellulose based printing inks, and grease resistant coatings.

Typical Properties

PropertyTest MethodTypical Value, Units
Ring and Ball Softening PointASTM E 28123 °C
Color, Gardnera 4
Acid Number (mg KOH/g) 40
Form solid
Odor typical rosin
Specific Gravity >1
     @ 20°C negligible
Vapor Pressure 
     @ 20°C negligible
Solubility in Water 
     @ 20°C negligible
     (60 % in Xylene) E-J
Appearance light amber crystalline solid
Description, Base Resin Maleic acid modified glycerol ester of gum rosin

a60% resins solids in toluene or xylene

Compatibility and Solubility

Lewisol™ 29-M resin is fully or partially compatible (but in practically useful proportions) with RS Nitrocellulose chlorinated rubber, polyvinyl chloride and ester type waxes. It is partially compatible with ethyl-cellulose and EHEC (Ethyl-Hydroxy-Ethyl-Cellulose), and is incompatible with cellulose acetate.
This resin is soluble in esters, ketones and aromatic hydrocarbons, and is insoluble in aliphatic solvents and alcohols.


The large contact surface the pieces of resin present make them susceptible to gradual oxidation, which can be more advanced in some batches than others. This can cause darkening and/or affect the resin’s solubility in organic solvents and compatibility with polymers. Therefore, we strongly recommend keeping strict control of inventories at all times, and taking special care to ensure that the oldest material is used first. We suggest a shelf life of 6 months for this product.

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.

2/28/2018 11:35:39 AM