Repolymerization

Details Repolymerization Repolymerization

1986-02-28

1987-04-14

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525390, 525444, 525453, 525534, 528 17, 528 56, 528207, 528279, 528286, 528288, C08G 6376

Patent

active

046579885

ABSTRACT:
Polymeric materials are repolymerized by intensely admixing the polymer with an additive having the formula: ##STR1## wherein M is titanium or zirconium, R, R.sup.1 and R.sup.2 are each a monovalent alkyl, alkenyl, alkynyl, aralkyl, aryl or alkaryl group having up to 20 carbon atoms or a halogen or ether substituted derivative thereof, and, in addition, R.sup.2 may also be an oxy derivative or an ether substituted oxy derivative of said groups; A, B, and C are each a monovalent aroxy, thioaroxy, diester phosphate, diester pyrophosphate, oxyalkylamino, sulfonyl or carboxyl containing up to 30 carbon atoms; and a+b+c=3. The repolymerized polymers have improved physical properties and higher heat distortion temperatures, experience less thermal degradation and show greater solvolysis resistance than the polymers prior to the repolymerization.

REFERENCES:
patent: 4036796 (1977-07-01), Sugiyama et al.
patent: 4115371 (1978-09-01), Bier et al.
patent: 4148989 (1979-04-01), Tews et al.
patent: 4452970 (1984-06-01), Brunelle
patent: 4454312 (1984-06-01), Kuze et al.
patent: 4482700 (1984-11-01), Kuhnrich et al.

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