Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1985-09-09
1987-05-12
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C08G 7902
Patent
active
046651527
ABSTRACT:
Low or no chlorine content poly(aryloxyphosphazene) copolymers useful for fireproof foams are surprisingly produced in a one step process without use of excess phenoxide reactant over a shorter than conventional time period by (a) adding linear (NPCl.sub.2).sub.n to a mixture of phenoxides comprising alkali or alkaline earth metal phenoxide, alkylphenoxide and allylphenoxide in quantities such that the total of the phenoxides is the equivalent of the total chlorine atoms in the (NPCl.sub.2).sub.n and allylphenoxide is present in an amount equivalent to from about 2% to about 10% of the chlorine atoms in the (NPCl.sub.2).sub.n ; and (b) reacting the admixture formed in step (a) at a temperature ranging from about 280.degree. F. to about 320.degree. F. for a time period ranging from about 7 hours to about 10 hours.
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Cole William M.
Dembek, Jr. Joseph A.
Sagar Vispi R.
Hoke Veronica P.
The Firestone Tire & Rubber & Company
Troy, Sr. Frank J.
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