Method for the preparation of hydroperoxide derivatives of rubbe

Details Method for the preparation of hydroperoxide derivatives of rubbe Method for the preparation of hydroperoxide derivatives of rubbe

1989-01-23

1991-12-24

McCamish, Marion E.

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 78, 522 79, 522116, 522120, 522129, 525244, 525315, 525388, C08F 250, C08F 806, C08F27904, C08F27902

Patent

active

050753479

ABSTRACT:
An improved process for forming hydroperoxide derivatives of rubbery polymers. The hydroperoxide derivatives being particularly well suited for use as intermediates in forming graft rubbery polymers. The process involves dissolving a rubbery polymer in a monomer mixture and adding to the rubbery polymer/monomer mixture a photosensitizing agent. The rubbery polymer-monomer mixture is then oxygenated and exposed to light under conditions wherein triplet oxygen is converted to singlet oxygen. The improvement comprises adding to the rubbery polymer/monomer mixture a solvent capable of solubilizing the photosensitizing agent in the rubbery polymer/monomer mixutre. The solubilizer increases the yield of hydroperoxide derivatives of rubbery polymers formed by a factor of 3.

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patent: 3252880 (1966-05-01), Magat
patent: 3484353 (1969-12-01), Sharp
patent: 3846266 (1974-11-01), Duynstee
patent: 3925076 (1975-12-01), Heimsch
patent: 4183878 (1980-01-01), Biletech
patent: 4717741 (1988-01-01), Hahnfeld

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