Arco Chemical Technology, L.p.

Other

Carl J Sullivan

Robert G Gastinger

Gangfeng Cai

A process for making poly(2-methyl-1,3-propanediol) is disclosed. The process comprises heating 2-methyl-1,3-propanediol in the presence of an etherification catalyst at a temperature within the range of about 100.degree. C. to about 210.degree. C. The resulting poly(2-methyl-1,3-propanediol) has a degree of polymerization within the range of about 2 to about 20, and a number average molecular weight within the range of about 150 to about 2000. The process enables the synthesis of dimers and trimers of 2-methyl-1,3-propanediol, which are useful as reactive diluents or chain extenders for polyurethanes and as diol components for unsaturated polyester resins and thermoplastic polyesters.

Process for making poly(2-methyl-1,3-propanediol)

Linear polyester diols suitable for the preparation of thermoset coatings having improved flexibility and hardness are disclosed. The linear polyesters consist essentially of recurring units of isophthalic acid, an aliphatic diol component including 2-methyl-1,3-propanediol, and optionally, a dicarboxylic acid other than isophthalic acid. The linear polyester diols are useful for thermosettable resin compositions that comprise the polyester diol, an aminoplast crosslinking agent, and a catalyst.

Linear polyester diols based on isophthalic acid and

Water-reducible coating removers are disclosed. The compositions comprise N-methyl-2-pyrrolidone, a glycol ether ester, a C.sub.1 -C.sub.8 aliphatic alcohol, and a surfactant. The coating removers are suitable for stripping partially and fully dried alkyd, latex, and nitrocellulose coatings.

Water-reducible coating removers containing n-methyl-2-pyrrolidone

Aggressive, water-soluble coating remover compositions are disclosed. The compositions contain .gamma.-butyrolactone, an organic acid, and water, and optionally include solvents, surfactants, thickeners, and rust inhibitors. The coating removers of the invention are uniquely effective in that they are both water rinsable and capable of removing highly crosslinked coatings.

Paint stripper compositions containing gamma-butyrolactone

A paint stripper and coatings remover composition free of methylene chloride is disclosed which contains N-methyl pyrrolidone, an aliphatic hydrocarbon such as mineral spirits, and a miscibilizing solvent such as an aromatic hydrocarbon. The composition preferably also contains one or more additives such as a surfactant, thickener, or accelerator. Paint strippers having low volatility, outstanding effectiveness, and low toxicity may be obtained.

Paint stripper compositions containing N-methyl-2-pyrrolidone, aliphatic

Methylene chloride-free coating remover compositions are disclosed that contain N-methyl-2-pyrrolidone and one or more plant or animal-derived oils. The compositions optionally contain a miscibilizing solvent, thickener, and surfactant. Effective, economical, low-toxicity, low-volatility coating removers that are largely biodegradable and are derived from renewable resources are provided.

Paint stripper compositions containing N-methyl-2-pyrrolidone and

Primary and secondary hydroperoxide contaminants in a tertiary hydroperoxide composition obtained by oxidation of a branched hydrocarbon are removed by contacting the tertiary hydroperoxide with a carboxylic acid derivative such as an anhydride and a basic compound such as sodium hydroxide. A tertiary hydroperoxide such as tertiary butyl hydroperoxide is purified with minimal loss of the desired tertiary hydroperoxide.

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Exton, PA, United States of America

Carl J Sullivan