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.