Abstract
A new process for copolymerization is given by using either a diaryl oxalate single polymer or a diaryl oxalate copolymer with at least one vinyl monomer as a source of free radicals, and adding a conventional radical initiator to them when irradiated with light or particle radiations. The function of the free radicals generated from the diaryl oxalate monomer is quite different from the free radicals generated from the conventional initiators. The addition of the conventional radical initiators is to accelerate the copolymerization reaction. The advantage of this process is that low energy light at room temperature can be used like high energy radiation. In one of the examples, 500 g of diaryl oxalate monomer, 1200ml of benzene and 0.2 mol/l of benzoil peroxide were mixed and underwent a polymerization reaction in nitrogen gas at 70/sup 0/C for 8 hrs. A polymer was isolated from their methanol solution. The polymer had an iodine value of 77.7 and a yield of 35%. The polymer was dissolved in vinyl acetate, methacrylate or acrylic acid with or without benzoil peroxides. The produced viscous solutions were molded and irradiated with a 450 Watt mercury lamp. Experiments revealed that the products obtained in the presence
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Citation Formats
Tojima, M, Matsumoto, K, and Sasaki, H.
Process for producing a new copolymer. [Patent in Japanese].
Japan: N. p.,
1970.
Web.
Tojima, M, Matsumoto, K, & Sasaki, H.
Process for producing a new copolymer. [Patent in Japanese].
Japan.
Tojima, M, Matsumoto, K, and Sasaki, H.
1970.
"Process for producing a new copolymer. [Patent in Japanese]."
Japan.
@misc{etde_7324586,
title = {Process for producing a new copolymer. [Patent in Japanese]}
author = {Tojima, M, Matsumoto, K, and Sasaki, H}
abstractNote = {A new process for copolymerization is given by using either a diaryl oxalate single polymer or a diaryl oxalate copolymer with at least one vinyl monomer as a source of free radicals, and adding a conventional radical initiator to them when irradiated with light or particle radiations. The function of the free radicals generated from the diaryl oxalate monomer is quite different from the free radicals generated from the conventional initiators. The addition of the conventional radical initiators is to accelerate the copolymerization reaction. The advantage of this process is that low energy light at room temperature can be used like high energy radiation. In one of the examples, 500 g of diaryl oxalate monomer, 1200ml of benzene and 0.2 mol/l of benzoil peroxide were mixed and underwent a polymerization reaction in nitrogen gas at 70/sup 0/C for 8 hrs. A polymer was isolated from their methanol solution. The polymer had an iodine value of 77.7 and a yield of 35%. The polymer was dissolved in vinyl acetate, methacrylate or acrylic acid with or without benzoil peroxides. The produced viscous solutions were molded and irradiated with a 450 Watt mercury lamp. Experiments revealed that the products obtained in the presence of benzoil peroxides could reduce by as much as one half to one third the time required to harden the copolymer.}
place = {Japan}
year = {1970}
month = {Dec}
}
title = {Process for producing a new copolymer. [Patent in Japanese]}
author = {Tojima, M, Matsumoto, K, and Sasaki, H}
abstractNote = {A new process for copolymerization is given by using either a diaryl oxalate single polymer or a diaryl oxalate copolymer with at least one vinyl monomer as a source of free radicals, and adding a conventional radical initiator to them when irradiated with light or particle radiations. The function of the free radicals generated from the diaryl oxalate monomer is quite different from the free radicals generated from the conventional initiators. The addition of the conventional radical initiators is to accelerate the copolymerization reaction. The advantage of this process is that low energy light at room temperature can be used like high energy radiation. In one of the examples, 500 g of diaryl oxalate monomer, 1200ml of benzene and 0.2 mol/l of benzoil peroxide were mixed and underwent a polymerization reaction in nitrogen gas at 70/sup 0/C for 8 hrs. A polymer was isolated from their methanol solution. The polymer had an iodine value of 77.7 and a yield of 35%. The polymer was dissolved in vinyl acetate, methacrylate or acrylic acid with or without benzoil peroxides. The produced viscous solutions were molded and irradiated with a 450 Watt mercury lamp. Experiments revealed that the products obtained in the presence of benzoil peroxides could reduce by as much as one half to one third the time required to harden the copolymer.}
place = {Japan}
year = {1970}
month = {Dec}
}