Compositions – X-ray or neutron shield
Patent
1977-07-13
1978-12-12
Padgett, Benjamin R.
Compositions
X-ray or neutron shield
252300, 526192, G21F 110
Patent
active
041295242
ABSTRACT:
A radiation shielding material of a composition containing a polymer comprising (A) at least one essential monomer selected from the group consisting of alkyl methacrylate having 1 - 4 carbon atoms in an alkyl group, hydroxyalkyl acrylate, hydroxyalkyl methacrylate and styrene and (B) lead acrylate or lead methacrylate, and a lead carboxylate represented by the general formula: (RCOO).sub.a Pb, a being an integer equal to the valency of lead and R representing a saturated or unsaturated hydrocarbon residue having 5 - 20 carbon atoms, wherein the ratio x (% by weight) of the lead acrylate or lead methacrylate to the total constituent monomer in the polymer and the compounding ratio y (parts by weight) of the lead carboxylate to 100 parts by weight of said total monomer in said composition satisfy any one of the following three formulas I, II and III:
REFERENCES:
patent: 2403794 (1976-07-01), Goldrick et al.
patent: 3148160 (1964-09-01), Malm et al.
patent: 3608555 (1971-09-01), Greyson
patent: 3715331 (1973-02-01), Molnar
patent: 3974104 (1976-08-01), Foster et al.
patent: 4022960 (1977-05-01), Mima et al.
Nagai Haruo
Nunokawa Kunikazu
Uehara Hiroshi
Hueschen Gordon W.
Kyle Deborah L.
Kyowa Gas Chemical Industry Co. Ltd.
Padgett Benjamin R.
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