Process for producing radiation-shielding plastic materials

Details Process for producing radiation-shielding plastic materials Process for producing radiation-shielding plastic materials

1980-04-24

1981-09-29

Kight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

250517, 252478, 525539, 526240, C08F 244, G21F 100, C07F 724

Patent

active

042924197

ABSTRACT:
A radiation-shielding plastic material having an excellent transparency and superior mechanical properties, is produced by polymerizing, in the presence of a lead compound, a mixture of a vinyl monomer component (A) consisting of at least one member selected from alkyl methacrylates and acrylates, hydroxyalkyl methacrylates and acrylates and styrene and an organic acid component (B) containing, as an indispensable ingredient, at least one member selected from the compounds of the formulae (I) through (IV): ##STR1## wherein R.sub.1 =C.sub.1-10 hydrocarbon radical, R.sub.2 =C.sub.1-7 hydrocarbon radical, R.sub.3 and R.sub.4 =H or CH.sub.3, R.sub.5 =C.sub.2-7 hydrocarbon radical, R.sub.6 =C.sub.1-3 hydrocarbon radical and n=0.about.4.

REFERENCES:
patent: 4022960 (1977-05-01), Mima et al.
patent: 4129524 (1978-12-01), Nagai et al.
patent: 4182821 (1980-01-01), Nagai et al.

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