Polymerization of Styrene Initiated with Cumyl 4-<i>t</i>-Butylazo-4-Cyanoperoxypentanoate

Simionescu, C. I.; Popa, Aura Angelica; Comăniţlă, E.; Comăniţlă, B.

doi:10.1080/03602559208017760

Cited by 5 publications

(3 citation statements)

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“…Azodiacyl peroxides and azoperoxyesters were tested as initiators in styrene [5,6] and acrylamide [7] polymerization processes as well as in the preparation of block copolymers from vinyl [8][9][10] and acrylic [11] monomers. In the 1980s, an azoperoxy compound [9] was produced by the Ludicol Division of Pennwalt Corporation.…”

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confidence: 99%

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Radical initiators and their influence on the viscosity and molecular weight of acrylic polymers applied in pressure-sensitive adhesives

Czech¹,

Butwin²,

Hefczyc³

et al. 2009

Polimery

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Acrylic polymers, which can be applied as pressure-sensitive adhesives (PSA), based on 2-ethylhexyl acrylate, methyl acrylate, and acrylic acid were synthesized in ethyl acetate using azoperoxyester radical initiators. First, the investigated azoperoxyesters were synthesized and isolated. In a second stage, the thermally activated azo groups initiated the radical polymerization of the acrylate monomers. The viscosity, molecular weights, and polydispersities of the synthesized acrylic polymers usable as PSA were evaluated. The newly synthesized radical azoperoxyester initiators were compared with the commercial azo-initiator azobisisobutyronitrile (AIBN). Key words: radical azoperoxyester initiators, polymerization, synthesis of acrylic PSA, viscosity, molecular weight, polydispersity.INICJATORY RODNIKOWE I ICH WP£YW NA LEPKOOEAE I CIÊ¯AR CZ¥STECZKOWY POLIME-RÓW POLIAKRYLANOWYCH STOSOWANYCH W ROZPUSZCZALNIKOWYCH KLEJACH SAMOPRZYLEPNYCH Streszczenie -Opisano syntezê nowych rodnikowych inicjatorów azonadtlenoestrowych. Nastêpnie zsyntetyzowane azonadtlenoestry oraz handlowy inicjator AIBN zastosowano do przeprowadzonej w temperaturze wrzenia rozpuszczalnika rodnikowej polimeryzacji rozpuszczalnikowej wybranych monomerów akrylanowych (akrylanu 2-etyloheksylu, akrylanu metylu oraz kwasu akrylowego). Badano wp³yw rodzaju, ró¿ni¹cych siê budow¹ chemiczn¹ rodnikowych inicjatorów azowych, i ich ilooeci na lepkooeae, ciê¿ar cz¹steczkowy (M w , M n ) oraz polidyspersyjnooeae (PDI) otrzymanych polimerów akrylanowych. Najwiêksze wartooeci lepkooeci, M w i M n uzyskano w przypadku polimerów otrzymanych z u¿yciem inicjatora o najd³u¿szym ³añcuchu (AIBN-HEP). Wzrost stê¿enia inicjatorów w ka¿dym przypadku powodowa³ zmniejszenie tej wartooeci. S³owa kluczowe: rozpuszczalnikowe poliakrylanowe kleje samoprzylepne, rodnikowe inicjatory azonadtlenoestrowe, lepkooeae, ciê¿ar cz¹steczkowy, polidyspersyjnooeae.

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confidence: 99%

“…Azoperoxy compounds also have some other advantages compared to traditional free-radical initiators (e.g., a higher initiation rate) [13]. Previously reported azoperoxy compounds were mostly formed in reactions of azo [6,8,10] with peroxy compounds (hydroperoxides and peracids) in both heterogenic and homogenic systems.…”

mentioning

confidence: 99%

Radical initiators and their influence on the viscosity and molecular weight of acrylic polymers applied in pressure-sensitive adhesives

Czech¹,

Butwin²,

Hefczyc³

et al. 2009

Polimery

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“…They can also play a role of traditional initiator in radical polymerization of just one type of monomers. Azo-diacyl peroxides and azo-peresters were tested as initiators in styrene [2][3] and acrylamide [4] polymerization processes and in preparation of block copolymers from vinyl [5][6][7] and acrylic [8] monomers.…”

Section: Introductionmentioning

confidence: 99%

Novel azo-peresters radical initiators used for the synthesis of acrylic pressure-sensitive adhesives

Czech

Herko²,

Hefczyc

et al. 2008

Express Polym. Lett.

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Abstract. Acrylic pressure-sensitive adhesives (PSA) based on two monomers: 2-ethylhexyl acrylate and acrylic acid were synthesized in organic solvent ethyl acetate using AIBN (2, 2′-azo-diisobutyronitrile) and new synthesized azo-peresters as radical initiators. After polymerization the viscosity, molecular weight and polydispersity of synthesized acrylic PSA were evaluated. The novel synthesized radical azo-perester initiators were synthesized, isolated and compared with industrial predominant usable azo-initiator AIBN.

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Synthesis and thermal properties of azo-peroxyesters

et al. 2008

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Polymerization of Styrene Initiated with Cumyl 4-t-Butylazo-4-Cyanoperoxypentanoate

Cited by 5 publications

References 5 publications

Radical initiators and their influence on the viscosity and molecular weight of acrylic polymers applied in pressure-sensitive adhesives

Radical initiators and their influence on the viscosity and molecular weight of acrylic polymers applied in pressure-sensitive adhesives

Novel azo-peresters radical initiators used for the synthesis of acrylic pressure-sensitive adhesives

Synthesis and thermal properties of azo-peroxyesters

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