Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From ketone or ketene reactant
Patent
1978-09-08
1981-01-06
Briggs, Sr., Wilbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From ketone or ketene reactant
528126, 528128, 528146, 528158, 528228, 528243, 528244, 528266, 528399, C08L 8300
Patent
active
042437962
ABSTRACT:
Polyphosphazene copolymers are prepared which are comprised of repeating units represented by the formulas: ##STR1## wherein X is represented by the formula: ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 are independently selected from the group consisting of hydrogen, substituted and unsubstituted alkyl radicals containing from 1 to 15 carbon atoms, substituted and unsubstituted cycloalkyl, aryl, arylalkyl, and heterocyclic radicals; X' is selected from the group consisting of substituted and unsubstituted alkoxy, aryloxy, mercapto and amino radicals, and mixtures thereof; and 20.ltoreq.(w+y+z).ltoreq.50,000 per polymer unit.
The polyphosphazene polymers of the present invention are prepared by the reaction of the enol form of an aldehyde or a ketone and an additional reactant such as an alkanol, aryl alcohol, mercaptan, or amine with poly(dichlorophosphazene) in the presence of a tertiary amine. The polymers of this invention may be modified by crosslinking or curing.
The polymers of this invention can be utilized to form protective films and may also be utilized in applications such as molding, coatings, foams and the like.
REFERENCES:
patent: 3702833 (1972-11-01), Rose et al.
patent: 4040843 (1977-08-01), Franko-Filipasic et al.
Halasa Adel F.
Hergenrother William L.
Briggs Sr. Wilbert J.
The Firestone Tire & Rubber & Company
LandOfFree
Polyphosphazene polymers containing substituents derived from al does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyphosphazene polymers containing substituents derived from al, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyphosphazene polymers containing substituents derived from al will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-286061