POLYMERIZATION METHOD AND POLYMERS FORMED THEREWITH

摘要

Condensation of fluoro-substituted and silyl-substituted monomers provides polymers suitable for use, e.g., as engineering polymers. A monomer composition is condensed in the presence of a basic catalyst. The monomer composition contains a compound of formula F—X—F and a compound of formula (R1)3Si—Z—Si(R1)3, and forms an alternating X—Z polymer chain and a silyl fluoride byproduct. X has the formula -A(-R2-A)n-; each A is SO2, C(═O), or Het; R2 is an organic moiety; n is 0 or 1; Het is an aromatic nitrogen heterocycle; Z has the formula -L-R3-L-; each L is O, S, or N(R4); and each R3 is an organic moiety, and R4 comprises H or an organic moiety.

主权项

1: A polymerization method comprising the step of contacting a liquid monomer composition with a basic catalyst, wherein the monomer composition comprises at least one compound of formula F—X—F and at least one compound of formula (R1)3Si—Z—Si(R1)3; wherein:
each R1 independently is a hydrocarbyl group; X has the formula -A(-R2-A)n-; each A independently is SO2, C(═O), or Het; R2 comprises a first organic moiety; n is 0 or 1; Het is an aromatic heterocycle comprising at least two carbon atoms and at least one nitrogen atom in a heteroaromatic ring thereof, and when A is Het, the F substituent is attached to a carbon atom of the heteroaromatic ring thereof; Z has the formula -L-R3-L-; each L independently is O, S, or N(R4); R3 comprises a second organic moiety; each R4 independently is H or a third organic moiety; and wherein the F and (R1)3Si substituents form a silyl fluoride byproduct of formula (R1)3Si—F as the respective A and L groups of the monomers condense to form an X—Z polymer chain; and wherein the basic catalyst comprises at least one material selected from the group consisting of an amidine, a guanidine, a phosphazene, a nitrogen heterocyclic carbene, a tertiary alkoxide, and a fluoride salt.