Polyphosphazene polymers containing dialkyl alkylene diamino substituents
AssigneeThe Firestone Tire & Rubber Company
InventorsWilliam L. Hergenrother, Adel F. Halasa
Life of this patent
Estimating the term…
Abstract
Polyphosphazene polymers are prepared which contain units represented by the formulas: ##STR1## wherein X is ##STR2## in which R is an alkyl group of 1 to 8 carbon atoms and a is an integer of 2 to 8 and wherein X' is the same as X for homopolymers and for copolymers X' is selected from the group consisting of substituted and unsubstituted alkoxy, aryloxy, amino or mercapto groups. The polymers of the invention can be utilized to form protective films and may also be utilized in applications such as moldings, coatings and the like.
Claims12
A polyphosphazene polymer containing units represented by the formulas:
- ##STR11## wherein X is ##STR12## wherein R is an alkyl group of 1 to 8 carbon atoms and a is an integer of 2 to 8, and wherein X' is the same as X or is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino and mercapto radicals, and wherein said polymer contains from 20 to 50,000 of said units.
A method of preparing polyphosphazene polymers containing units represented by the formulas:
- ##STR13## wherein X is a dialkyl alkylene diamino substituent having the formula --NH--(CH.sub.2).sub.a --NR.sub.2, in which R is an alkyl group of 1 to 8 carbons and a is an integer from 2 to 8, and wherein X' is the same as X or is selected from the group consisting of substituted or unsubstituted alkoxy, aryloxy, amino or mercapto groups;
- said method comprising reacting a poly(dichlorophosphazene) polymer having the formula --(NPCl.sub.2).sub.n --, wherein n is from 20 to 50,000 with a dialkyl alkylene diamine or a mixture consisting of a dialkyl alkylene diamine and a substituted or unsubstituted aliphatic or aromatic alcohol, amino compound or mercaptan in the presence of a tertiary amine.
Dependencies are inferred from the claim text.