Siloxane-containing polymers
AssigneeM&T Chemicals Inc.
InventorAbe Berger
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Abstract
The properties of polymeric compositions can be improved by the presence of a polysiloxane unit of formula ##STR1## where Q is a substituted or unsubstituted aromatic group, Z is ##STR2## D is unsubstituted or substituted hydrocarbylene R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each, independently, is unsubstituted or substituted hydrocarbyl. x, y and z each independently has a value from 0 to 100. Polyimides containing these units display improved solubility and adhesion; they are useful, among other things, as protective coatings.
Claims32
An article of manufacture comprising a substrate having disposed thereon a polymeric composition comprising a polyimide, poly(amide-imide) or a poly(half-amide) containing a thermally stable siloxane unit of formula ##STR141## where Q is a substituted or unsubstituted aromatic group
- Z is ##STR142## D is unsubstituted or substituted hydrocarbylene;
- R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each independently is unsubstituted or substituted hydrocarbyl;
- x, y and z each independently has a value from 0 to 100.
Dependencies are inferred from the claim text.