... amount of low-
molecular-weight polymer in the polymerization of NVK formed by a cationic process
initiated by benzoyl peroxide [419, 420 ] or AIBN in the presence of CCl
4
[ 421 ] and CBr
4
[ 422 , 423 ] ... reported on the coordinative Ziegler–Natta-type polymerization
of a-MeSt. Some papers of Sakurada [20 0 ,22 0 22 2] describe successful preparation of
PMS with organometall...
... grafting of
VC on suitable polymers [30 5, 438 ], blends of PVC with butadiene/styrene and butadiene/
methacryl acid esters copolymers [ 433 ], and polymer- analogous reactions on the
macromolecule [ 439 ,440] ... presence of potassium t-butoxide [32 ,33 ] or such transition metal catalysts as
tris(triphenylphosphine)-ruthenium dichloride [34 ].
RO À CH
2
À CH ẳ CH
2
!
tBuOK or
Ph
3...
... substitution from
hydroquinone and an excess of DFBP (109). They were used in turn for syntheses of
PES block copolymers (110) [ 177 , 178 ]. Blockcopolymers containing dimethyl siloxane
segments ... and
early exploration of these methods has been reviewed in the 1st edition of this handbook
(Chapter 9).
54ị
In a publication of 1988 [79 ] (not reviewed before) polycondensations...
... respectively.
Setting the number of moles of the polyol, n
pol
,tobe1,r becomes the number
of moles of the chain extender. Number of moles of the diisocyanate, n
ISO
, at the
stoichiometric ratio of NCO/OH groups ... the immiscibility of the hard and
soft segments. Degree of phase separation (or phase mixing) affects the properties of the
polymers, and it depends on the str...
... toluene and amorphous polymers during
homogeneous polymerization in tetrahydrofuran. The softening points of the crystalline
polymers were about 240
C [342]. Atactic polymer of t-butyl vinyl ketone ... rate of polymerization of crotonaldehyde increases with the
dielectric constant of the solvent is evidence for an ionic mechanism of the polymerization.
An increase in dielectri...
... number
of macrocycles n (degree of polymerization) with the number of bridged monomers b and
the number of end monomers e.
n ẳ b=2 ỵ e=4 9ị
Evaluation of some data (determination of number of nitrile ... and polymeric phthalocya-
nines. By ESCA spectra 0.7% of free Cu in the polymeric films were found. In
dependence of the deposited Cu-film thicknesses of 1.5 till 20 nm ad...
... Synthesis of Conducting Polymers in Handbook of
Conducting Polymers, Vol. 1 (Skotheim, T. A., ed.), Marcel Dekker, New York, p. 82;
Street, G. B. (1986). From Powder to Plastics in Handbook of ... coworkers [123 ].
The polymers are air and waterstable and reached, doped with (I
2
or FeCl
3
), values
of 0.2–50 S/cm and represent a novel type of electrically conducting polymers....
... University of Technology, Kaunas, Lithuania
I. FOREWORD
Since 1992 when the first edition of the Handbook of Polymer Synthesis was published
a number of new applications for photoconductive polymers ... et al. [139 ] and Bradley
[140]. One of the major improvements was the use of tetrahydrothiophene instead of
dimethyl sulphide in the synthesis of the precursor polym...
... ratio of about 0.4 and an average degree of polymerization of
about 30 [43].
12ị
Phenylic substituents at the vinyl ene positions — increasing both solubi lity of the
polymer and stability of the ... synthesis of polyfluoren homopolymers allows also the design of alternating
copolymers. Instead of the 2,7-dibromofluorene a variety of dibromoarenes can be used
in the Pd-cat...
... importance of this first example of a solid phase synthesis on polymer support which
was followed by the development of numerous polymeric reagents [148]. Presently, the
fast expanding technique of combinatorial ... of the great number of hydroxyl groups in the
prepolymer, curing with dianhydrides can form very densely crosslinked, second- stage
polymers if used in relatively...