New develops of high-performance stabilizer

New develops of high-performance stabilizer

Sumitomo Chemical reports that it has developed a high-performance single additive system stabilizer with polymer stabilization capabilities matching that typically achieved by a combination of stabilizers.

Denoted Sumilizer GP, the chemical structure of this latest addition to the company's Sumilizer range of polymer antioxidants and stabilizers combines both phenolic and phosphonic moieties and thus possesses the stabilizing characteristics of both systems. Sumilizer GP is reported to improve plastics discoloration and reduce fish eye gel problems in PE films. It shows high compatibility with a variety of solvents and is resistant to hydrolysis, with associated reductions in blooming, odour and black specks, the company says. It is FDA approved for various load levels in PP, HDPE and LLDPE.

In addition, according to a report in Chemical Week (4 June 2003, p. 29), Sumitomo Chemical is constructing a 500 tons/year unit at Oita, Japan, as the first commercial-scale unit in the world to make a dual-structured antioxidant. The plant is due to be commissioned early in 2004, and the company expects sales of the new product to reach 400-500 tons/year within two years, the report says.