Radiation cross-linked polyurethane foams

Details Radiation cross-linked polyurethane foams Radiation cross-linked polyurethane foams

1976-08-20

1981-02-10

Briggs, Sr., Wilbert J.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415919, 521108, 521129, 521130, 521131, 521132, 521172, C08G 1804, C08J 718

Patent

active

042500052

ABSTRACT:
Polyurethane foams having modified properties, such as increased tensile strength, tear strength and improved compression-deflection characteristics are prepared by incorporating in a foam-forming composition, an effective amount of a cross-link promoter, selected from the group consisting of polyfunctional, polyunsaturated acrylates; polyfunctional, polyunsaturated methacrylates; triallyl cyanurate; methyl methacrylate; 1,5-cyclooctadiene and bis (.beta.-chloroethyl) vinyl phosphonate. After a foam is prepared from the composition, it is exposed to a radiation dosage sufficient to modify the properties of said foam.

REFERENCES:
patent: 2642403 (1953-06-01), Simon et al.
patent: 2952593 (1960-09-01), Rubens
patent: 3650669 (1972-03-01), Osborn et al.
patent: 3700752 (1972-10-01), Hutchinson
patent: 3714083 (1973-01-01), Nakayama et al.

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