Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1987-07-29
1988-12-06
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528210, C08G 6540, C08G 6548, C08G 7523
Patent
active
047897228
ABSTRACT:
Polyarylene polyethers, made by a process comprising reacting a dihydroxy compound and strong and weak bases in a liquid reaction medium at 100.degree.-200.degree. C. to form a double salt and then reacting the double salt with a slight molar excess of dihalobenzenoid compound bearing two replaceable halogens, are disclosed. The process reliably produces halogen-terminated polyarylene polyethers of select degrees of polymerization and desirable correspondence between weight and number average molecular weights. In subsequent steps amine-terminated polyarylene polyethers are made using the strong and weak bases. The resulting amine-terminated polyethers have a low, select degree of polymerization, desirable correspondence between weight and number average molecular weights and high level of amine termination.
REFERENCES:
patent: 2822351 (1958-02-01), Kreuchunas
patent: 3264536 (1966-08-01), Robinson et al.
patent: 3332009 (1967-07-01), Farnham et al.
patent: 3332909 (1967-07-01), Farnham et al.
patent: 3503931 (1970-03-01), Radlmann et al.
patent: 3539655 (1970-11-01), Strachan et al.
patent: 3554972 (1971-01-01), Cornell
patent: 3563951 (1971-02-01), Radlmann et al.
patent: 3622541 (1971-11-01), Darsow
patent: 3647751 (1972-03-01), Darsow
patent: 3723389 (1973-03-01), Khattab
patent: 3736293 (1973-05-01), Novak
patent: 3761449 (1973-09-01), Kaufman
patent: 3775368 (1973-11-01), Leslie et al.
patent: 3809682 (1974-05-01), Studinka et al.
patent: 3886120 (1975-05-01), Yagi et al.
patent: 3886121 (1975-05-01), Yagi et al.
patent: 3895064 (1975-07-01), Brede et al.
patent: 3920768 (1975-11-01), Kwiatkowski
patent: 4000499 (1977-08-01), Colon
patent: 4039511 (1977-08-01), Wulff et al.
patent: 4051109 (1977-09-01), Barr
patent: 4105635 (1978-08-01), Freeman
patent: 4105636 (1978-08-01), Taylor
patent: 4108837 (1978-08-01), Johnson et al.
patent: 4110314 (1978-08-01), Yagi et al.
patent: 4155068 (1979-05-01), Hartmann
patent: 4169178 (1979-09-01), Freeman
patent: 4176222 (1979-11-01), Cinderey
patent: 4186262 (1980-01-01), Freeman et al.
patent: 4200727 (1980-04-01), Blinne et al.
patent: 4275186 (1981-06-01), Kawakami et al.
patent: 4307222 (1981-12-01), Schwab et al.
patent: 4331798 (1982-05-01), Staniland
patent: 4476184 (1984-10-01), Lubowitz et al.
patent: 4517354 (1985-05-01), D'Alelio
patent: 4533721 (1985-08-01), Kurosawa et al.
patent: 4536559 (1985-08-01), Lubowitz et al.
patent: 4638044 (1987-01-01), Kelsey
patent: 4717761 (1988-01-01), Staniland
B. A. Trofimov et al: AZV. Akad. Nauk SSSR, Ser. Khim. No. 4, 751 (1986).
J. Polymer Science, Part A-1, vol. 5, 2380, 2381 (1967).
"Poly(aryl Ethers) by Nucleophilic Aromatic Substitution. I. Synthesis and Properties," R. N. Johnson, A. G. Farnham, R. A. Clendinning, W. F. Hale and C. N. Merriam, Journal of Polymer Science: Part A-1, vol. 5, 2375-2398 (1967).
"High Temperature Polymers. I.--Sulfone Ether Diamines for Tractable High Temperature Polymers" by James H. Kawakami, George T. Kwiatkowski, George L. Brock and Albert W. Bedwin, Journal of Polymer Science: Polymer Science Edition, vol. 12, 565-573 (1974).
May, 1981 NASA Report, "Synthesis and Characteristics of Polyarylene Ether Sulfones" (Final Report to NASA--Research Grant NSG 1559) by R. Visawanathan, B. C. Johnson, T. C. Ward and J. E. McGrath.
Jabloner Harold
Nguyen Tuyen T.
Hercules Incorporated
Hoke Veronica P.
Ross Jr. Edmund C.
LandOfFree
Polyarylene polyether made using mixed base system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyarylene polyether made using mixed base system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyarylene polyether made using mixed base system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1494495