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ABSTRACT Research into the mechanism of the inifer process led to perfectly end functionalized (telechelic) linear or three-arm star polyisobutylenes (PIB)s. Recently a semicontinuous

technique has been developed and is now routinely employed for the synthesis of these materials. The ingredients are fed into a stirred reactor and by controlling their input rates PIB

telechelics with virtually theoretical _Mn_ and _Mw_/_Mn_ are harvested. The first intermediates that form are _t_-chlorine telechelic PIBs which can then be quantitatively converted to

other well-defined telechelics, _e.g._, PIBs carrying olefin, alcohol, phenol, etc. end groups. PIB diols and triols are now available on a semicommercial scale in various molecular weights.

Telechelic PIBs have been used for the preparation of new block copolymers and/or networks by a variety of techniques. For example, a combination of polymerization and coupling techniques

have been employed for the synthesis of a new class of di- and triblock copolymers consisting of PIB and polyethylene glycol sequences. Thus phenol-ended PIBs were reacted with a slight

stoichiometric excess of diisocyanates, and the resulting isocyanate-capped prepolymers were then reacted with commercially available polyethylene glycols. These hydrophobic/hydrophilic

(amphiphilic) materials exhibit some unusual dilute solution properties. SIMILAR CONTENT BEING VIEWED BY OTHERS DIBLOCK DIALTERNATING TERPOLYMERS BY ONE-STEP/ONE-POT HIGHLY SELECTIVE

ORGANOCATALYTIC MULTIMONOMER POLYMERIZATION Article Open access 08 December 2021 ONE-STEP SYNTHESIS OF SEQUENCE-CONTROLLED MULTIBLOCK POLYMERS WITH UP TO 11 SEGMENTS FROM MONOMER MIXTURE

Article Open access 10 January 2022 SYNTHESIS OF FUNCTIONAL AND ARCHITECTURAL POLYETHERS VIA THE ANIONIC RING-OPENING POLYMERIZATION OF EPOXIDE MONOMERS USING A PHOSPHAZENE BASE CATALYST

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8, 563 (1982). Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Institute of Polymer Science, The University of Akron, Joseph P Kennedy Authors * Joseph P Kennedy View

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Sequential Copolymers and Networks by a Combination of Techniques. _Polym J_ 17, 29–35 (1985). https://doi.org/10.1295/polymj.17.29 Download citation * Issue Date: 01 January 1985 * DOI:

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currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative KEYWORDS * Inifer Process * Telechelic Polyisobutylenes *

Phenol-Ended * Polyisobutylenes * Polyisobutylene Blocks