Comb-like polymers and graft copolymers from polyarylene polyeth

Details Comb-like polymers and graft copolymers from polyarylene polyeth Comb-like polymers and graft copolymers from polyarylene polyeth

1989-05-12

1992-02-25

Ziegler, Jacob

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525471, 525535, 525905, 525906, C08F28308, C08G 7523, C08L 7112

Patent

active

050914804

ABSTRACT:
Oligomers of polyarylene polyethethers (PAPE) having a mol wt Mn in the range from 1000 to about 10,000 are converted to monofunctionalized macromers, so as, in the first instance, to provide a reactive double bond (for example, a vinylbenzyl group) at only one end of the PAPE; and, in the second instance, to provide a triple bond (benzylethynyl group) at only one end of the PAPE. The macromer may be a polysulfone, a polyketone, or a copolymer containing both sulfone and ketone-containing units; or, the macromer may be monofunctionalized PPO. The synthesis of macromers with terminal double bonds is carried out with a fast and quantitative modified Williamson etherification of the PAPE with an electrophilic haloalkyl reactant ("HAR") such as chloromethylstyrene ("C1MS") in the presence of a major molar amount (more than 50 mol % based on the number of moles of OH group originally present in the oligomer) of a phase transfer catalyst such as tetrabutylammonium hydrogen sulfate ("TBAH"). The vinyl groups at the end of the marcomer may then be converted to an ethynyl group by bromination of the macromer in CH.sub.2 Cl.sub.2 or CHCl.sub.3, followed by dehydrobromination in the presence of potassium-tert-butoxide ("K-t-Bu"). The glass transition temperature (T.sub.g) of the comb-like polymer produced from (monostyrenated) macromer after curing, is unexpectedly higher than that of the terminally halogenated macromer which the comb-like polymer is derived.

REFERENCES:
patent: 4207406 (1980-06-01), Orlander
patent: 4634742 (1987-06-01), Percec
patent: 4663402 (1987-05-01), Percec et al.
patent: 4701514 (1987-10-01), Percec

Affiliated with

Also associated with

Rating

Comb-like polymers and graft copolymers from polyarylene polyeth does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Comb-like polymers and graft copolymers from polyarylene polyeth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comb-like polymers and graft copolymers from polyarylene polyeth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1893802