𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Polymerisationsauslösung mit substituierten Ethanen, 1. Polymerisation von Methylmethacrylat mit 1,1,2,2-Tetraphenyl-1,2-diphenoxyethan

✍ Scribed by Błedzki, Andrzej ;Braun, Dietrich

Publisher
Wiley (John Wiley & Sons)
Year
1981
Weight
426 KB
Volume
182
Category
Article
ISSN
0025-116X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

1,1,2,2‐Tetraphenyl‐1,2‐diphenoxyethane (TPPA) initiates at 70°C the polymerization of methyl methacrylate. In the first period oligomers of the type 1 with two phenoxydiphenylmethyl end groups (P~n~ ≈ 1 – 20)
magnified image
are formed by primary radical termination. These telechelics are effective initiators of the further free radical polymerization of vinyl monomers.

📜 SIMILAR VOLUMES

Polymerisationsauslösung mit substituier
Polymerisationsauslösung mit substituierten ethanen, 4. Kinetik der polymerisation von methylmethacrylat mit 1,1,2,2-tetraphenyl-1,2-diphenoxyethan
✍ Błedzki, Andrzej ;Balard, Henri ;Braun, Dietrich 📂 Article 📅 1981 🏛 Wiley (John Wiley & Sons) ⚖ 492 KB

## Abstract The polymerisation of methyl methacrylate (MMA) by 1,1,2,2‐tetraphenyl‐1,2‐diphenoxyethane is characterised by three steps: during the initial period oligomers from MMA and initiator radicals are formed by primary radical termination. These oligomers produce free macroradicals and initi

Polymerisationsauslösung mit substituier
Polymerisationsauslösung mit substituierten ethanen, 2. Trennung der Oligomeren aus Methylmethacrylat und 1,1,2,2-Tetraphenyl-1,2-diphenoxyethan
✍ Błedzki, Andrzej ;Balard, Henri ;Braun, Dietrich 📂 Article 📅 1981 🏛 Wiley (John Wiley & Sons) ⚖ 282 KB

## Abstract The telechelics **1** from methyl methacrylate and 1,1,2,2‐tetraphenyl‐1,2‐diphenoxyethane, can be separated by adsorption chromatography. The structure of the dimers and trimers was identified by ^1^H NMR‐spectroscopy. The free radical oligomerization is a process in which the syndiota

Polymerisationsauslösung mit substituier
Polymerisationsauslösung mit substituierten ethanen, 3. Struktur und Taktizität der Oligomeren aus Methylmethacrylat und 1,1,2,2-Tetraphenyl-1,2-diphenoxyethan
✍ Balard, Henri ;Błedzki, Andrzej ;Braun, Dietrich 📂 Article 📅 1981 🏛 Wiley (John Wiley & Sons) ⚖ 319 KB

## Abstract The ^1^H NMR‐spectra of MMA oligomers with two phenoxydiphenylmethyl end groups, **1**, are discussed. The syndiotactic and isotactic dimers and two heterotactic and one syndiotactic trimer could be identified, whereas no isotactic trimer was found.

Polymerisationsauslösung mit substituier
Polymerisationsauslösung mit substituierten ethanen, 8. Polymerisation von styrol
✍ Błedzki, Andrzej ;Braun, Dietrich 📂 Article 📅 1986 🏛 Wiley (John Wiley & Sons) ⚖ 491 KB

The free radical polymerization of styrene initiated by 1,l ,2,2-tetraphenyl-l,2-diphenoxyethane (TPPA) can be described as a kind of dead end polymerization. At the beginning of the polymerization, mainly oligomers are formed by primary radical chain termination. These oligomers can be characterize

Polymerisationsauslösung mit substituier
Polymerisationsauslösung mit substituierten ethanen, 5. Polymerisation von verschiedenen methacrylmonomeren
✍ Błedzki, Andrzej ;Braun, Dietrich ;Menzel, Wolfgang ;Titzschkau, Klaus 📂 Article 📅 1983 🏛 Wiley (John Wiley & Sons) ⚖ 330 KB

## Abstract Methyl methacrylate, benzyl methacrylate, butyl methacrylate, and methacrylic acid can be polymerized by 1,1,2,2‐tetraphenyl‐1,2‐diphenoxyethane and 1,1,2,2‐tetraphenyl‐1,2‐dicyanoethane. In the first period of the polymerization with both initiators oligomers are formed which can initi