Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1985-12-30
1987-05-05
Kight, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525535, 526286, 526287, 526288, 526289, 526332, 526333, 526334, C08G 6548, C08G 7523
Patent
active
046634029
ABSTRACT:
A non-catalytic process converts oligomers of polyarylene polyethers (PAPE) having a mol wt Mn in the range from 1000 to about 10,000 to difunctionalized oligomers so as, in the first instance, to provide a reactive double bond (for example, a vinylbenzyl group) at each end of the PAPE; and, in the second instance to provide a triple bond (benzylethynyl group) at each end of the PAPE. The solubility of intermediate bisphenolates of (i) a dihydric phenol, and of (ii) the PAPE oligomer in particular solvents which allow (a) water of reaction to be removed without being degraded, and (b) essentially complete end-capping of the oligomer chains with vinyl chain ends, are the keys to the novel process. The PAPE most preferably has a repeating unit which is the residuum of two dihydric phenols or thiophenols ("DHP") linked through a C.dbd.O, --S--S--, or --SO.sub.2 - group, or a Si or C atom, and/or ether O, or thioether S atoms. The preferred repeating unit is formed by reaction of a DHP such as bisphenol A (BPA) with a halogenated DHP such as dichlorophenyl sulfone (DCPS) so as to provide an alternating configuration. The repeating unit may also include a linking residue of a reactive solvent which residue provides chain extension in the backbone. An oligomer which is a homopolymer having a repeating unit in which at least four benzenoid rings are connected through ether O atoms, may also be difunctionalized. In particular, .alpha..omega.-di(phenol)aromatic polyether sulfone oligomers ("APS") are esterified so as to have terminal methacrylyl groups; and, etherified so as to have styryl end groups which are thermally crosslinkable.
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Huvard Gary S.
Percec Virgil
Ramp Floyd L.
Traynor Lee
Kight John
Lobo Alfred D.
Moore M. L.
The B. F. Goodrich Company
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