Radiation process for producing 1,2-polybutadiene foamed product

Details Radiation process for producing 1,2-polybutadiene foamed product Radiation process for producing 1,2-polybutadiene foamed product

1976-10-01

1979-03-13

Turer, Richard B.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415918, 260DIG43, 521150, 521915, 521916, C08F 246

Patent

active

041441532

ABSTRACT:
A process for producing a photodegradable rubber foamed products of excellent softness, which comprises mixing 1,2-polybutadiene with 0.1 to 3.0% of a photosensitizer and with a thermally decomposable foaming agent, irradiating with ultraviolet ray of a wavelength of 240 to 400 m.mu. for 10 minutes or less to form a cross-linked material having a gel fraction of 30 to 80% (in boiling toluene; 7 hours), and heating to 150 to 230.degree. C. to form a foamed product. In particularly preferred embodiments of this invention, the foaming agent is p,p'-oxybis (benzenesulfonylhydrazide).

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