C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/2, 402/355,
C08G 79/02 (2006.01) C08L 85/02 (2006.01)
Patent
CA 1130812
ABSTRACT OF THE DISCLOSURE Polyphosphazene copolymers are prepared which contain randomly distributed units represented by the formulas Image Image and Image wherein X is a -OX(OR)m-1 radical in which Z is B+++, P+++, Si++++ or Ti++++, m is the valence of Z, R is a branched, straight chain or cyclic alkyl group containing from 1 to 12 carbon atoms or mixtures thereof and wherein X1 is selected from the group consisting of substituted and unsubstituted alkoxy, aryloxy, amino and mercapto groups. The alkyl groups may vary in carbon chain length or structure within the radical as they may all be the same. In the copolymer units represented by the above formulas, all X substitutent groups may be the same or they may be mixed and all X' substituent groups may be the same or mixed. In the mixtures, the X substituent groups may be mixtures of different -OX(OR)m-1 groups and the X' substituent groups may be mixtures of different alkoxy, aruloxy, amino and mercaptan groups. The specific proportion of X to X' substituent groups incorporated in the copolymers of the invention may vary considerably depending upon the particular end use for which the copolymer is intended, chemical and physical properties desired, and the degree of crosslinking desired. In general, the copolymers may contain from about 0.1 to about 55 mole percent of the X substituent and from about 45 to about 99.9 mole percent of the X' substituent. The preferred range is from about 0.5 to about 20 mole percent of the X substituent and from about 80 to 99.5 mole percent of the X' substituent. For applications such as moldings, coatings, foams and the like, the copolymer should contain at least ten (10) percent by weight of the X substituent. The copolymers of the invention can be utilized to form protective films and may also be utilized in applications such as for moldings, coatings, and the like. The copolymers of the invention also crosslink at room temperature in the presence of water yielding a solvent resistant film.
334339
Halasa Adel F.
Hergenrother William L.
Firestone Tire & Rubber Company (the)
Robic Robic & Associes/associates
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