Lewisol™ 28-M resin is totally or partially compatible (in proportions useful in practice) with RS Nitrocellulose, rosin-based resins, alkyds, oils and plasticizers used in lacquers, chlorinated rubber, polyvinyl chloride and ester type waxes. It is partially compatible with ethyl-cellulose and EHEC (Ethyl-Hydroxy-Ethyl-Cellulose), and it is incompatible with cellulose acetate. This resin is soluble in esters, ketones, and aromatic hydrocarbons, partially soluble in aliphatic solvents and butanol, and is insoluble in ethanol.
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.