Optically transparent radiation shielding material

Claim 2

An optically transparent organometallic homopolymer prepared from a polyvalent metal salt-containing monomer of the formula ##STR10## wherein M is a polyvalent metal, R is C 1 -C 12 alkyl, R 1 is C 1 to C 12 alkyl, phenyl or naphthyl unsubstituted or substituted with C 1 to C 6 alkyl, C 1 to C 6 alkoxy, amino, C 1 to C 4 alkylamino, di C 1 to C 4 alkylamino, nitro or halo or heterocyclic aryl, the heteroatom selected from the group nitrogen, oxygen and sulfur.

Claim 3

The homopolymer in accordance with claim 1 wherein said polyvalent metal is selected from the group magnesium, zinc, strontium, cadmium, calcium, mercury and lead.

Claim 4

The homopolymer in accordance with claim 2 where R is C 1 to C 4 alkyl and R 1 is C 1 to C 8 alkyl.

Claim 5

The homopolymer in accordance with claim 3 wherein R is methyl or ethyl, R 1 is selected from the group methyl, ethyl, isopropyl, isobutyl and 2-ethylhexyl and M is lead.

Claim 6

The homopolymer in accordance with claim 4 wherein R is methyl and R 1 is 2-ethylhexyl.

Claim 7

An optically transparent organometallic polymer prepared from a polyvalent salt-containing monomer of the formula ##STR11## where M is a polyvalent metal, R is C 1 to C 12 alkyl, R 1 is C 1 to C 12 alkyl, phenyl or naphthyl, unsubstituted or substituted with C 1 to C 6 alkyl, C 1 to C 6 alkoxy, amino, C 1 to C 4 alkylamino, di C 1 to C 4 alkylamino, di C 1 to C 4 alkylamino, nitro or halo or heterocyclic aryl, the heteroactom selected from the group nitrogen, oxygen and sulfur; and at least one polyfunctional monomer selected from the group ##STR12## where R 2 is hydrogen or methyl, A is alkylene of 2 to 4 carbon atoms and n is integer of 2 to 60 inclusive and ##STR13## where R 2 is as previously defined, B is a saturated or unsaturated hydrocarbon residue of 4-24 carbon atoms and m is an integer of 2 to 4 inclusive.

Claim 8

An optically transparent organometallic polymer prepared from a polyvalent salt-containing monomer of the formula ##STR11## where M is a polyvalent metal, R is C 1 to C 12 alkyl, R 1 is C 1 to C 12 alkyl, phenyl or naphthyl, unsubstituted or substituted with C 1 to C 6 alkyl, C 1 to C 6 alkoxy, amino, C 1 to C 4 alkylamino, di C 1 to C 4 alkylamino, di C 1 to C 4 alkylamino, nitro or halo or heterocyclic aryl, the heteroactom selected from the group nitrogen, oxygen and sulfur; and at least one polyfunctional monomer selected from the group ##STR12## where R 2 is hydrogen or methyl, A is alkylene of 2 to 4 carbon atoms and n is integer of 2 to 60 inclusive and ##STR13## where R 2 is as previously defined, B is a saturated or unsaturated hydrocarbon residue of 4-24 carbon atoms and m is an integer of 2 to 4 inclusive.

Claim 9

The polymer in accordance with claim 6 wherein said polyvalent metal is selected from the group magnesium, zinc, strontium, cadmium, calcium, mercury and lead.

Claim 10

The polymer in accordance with claim 7 where R is C 1 to C 4 alkyl, R 1 is C 1 to C 8 alkyl, the polyfunctional monomer is ##STR14## wherein n is an integer of 3 to 30 inclusive and B is a saturated or unsaturated hydrocarbon residue of 4-15 carbon atoms.

Claim 11

A process for preparing an optionally transparent organometallic homopolymer comprising polymerizing a polyvalent metal-containing monomer of the formula ##STR15## wherein M is a polyvalent metal, R is C 1 to C 12 alkyl, R 1 is C 1 to C 12 alkyl, phenyl or naphthyl unsubstituted or substituted with C 1 to C 6 alkyl, C 1 to C 6 alkoxy, amino, C 1 to C 4 di C 1 to C 4 alkylamino, nitro or halo or heterocyclic aryl, the heteroatom selected from the group nitrogen, oxygen and sulfur.

Claim 12

A process for preparing an optionally transparent organometallic homopolymer comprising polymerizing a polyvalent metal-containing monomer of the formula ##STR15## wherein M is a polyvalent metal, R is C 1 to C 12 alkyl, R 1 is C 1 to C 12 alkyl, phenyl or naphthyl unsubstituted or substituted with C 1 to C 6 alkyl, C 1 to C 6 alkoxy, amino, C 1 to C 4 di C 1 to C 4 alkylamino, nitro or halo or heterocyclic aryl, the heteroatom selected from the group nitrogen, oxygen and sulfur.

Claim 13

The process in accordance with claim 9 wherein said polyvalent metal is selected from the group magnesium, zinc, strontium, calcium, cadmium, mercury and lead.

Claim 14

The process in accordance with claim 10 wherein R is C 1 to C 4 alkyl and R 1 is C 1 to C 8 alkyl.

Claim 15

The process in accordance with claim 11 wherein R is methyl or ethyl, R 1 is selected from the group methyl, ethyl, isopropyl, isobutyl and 2-ethylhexyl and M is lead.

Claim 16

The process in accordance with claim 12 wherein R is methyl and R 1 is 2-ethylhexyl.

Claim 17

A process for preparing an optically transparent organometallic polymer comprising polymerizing a polyvalent salt-containing monomer of the formula ##STR16## where M is a polyvalent metal, R is C 1 to C 12 alkyl, R 1 is C 1 to C 12 alkyl phenyl or naphthyl, unsubstituted or substituted with C 1 to C 6 alkyl, C 1 to C 6 alkoxy, amino, C 1 to C 4 alkylamino, di C 1 to C 4 alkylamino, di C 1 to C 4 alkylamino, nitro or halo or heterocyclic aryl, the heteroatom selected from the group nitrogen, oxygen and sulfur; and at least one polyfunctional monomer selected from the group ##STR17## where R 2 is hydrogen or methyl, A is alkylene of 2 to 4 carbon atoms and n is an integer of 2 to 60 inclusive and ##STR18## where R 2 is as previously defined, B is a saturated or unsaturated hydrocarbon residue of 4-24 carbon atoms and m is an integer of 2 to 4 inclusive.

Claim 18

A process for preparing an optically transparent organometallic polymer comprising polymerizing a polyvalent salt-containing monomer of the formula ##STR16## where M is a polyvalent metal, R is C 1 to C 12 alkyl, R 1 is C 1 to C 12 alkyl phenyl or naphthyl, unsubstituted or substituted with C 1 to C 6 alkyl, C 1 to C 6 alkoxy, amino, C 1 to C 4 alkylamino, di C 1 to C 4 alkylamino, di C 1 to C 4 alkylamino, nitro or halo or heterocyclic aryl, the heteroatom selected from the group nitrogen, oxygen and sulfur; and at least one polyfunctional monomer selected from the group ##STR17## where R 2 is hydrogen or methyl, A is alkylene of 2 to 4 carbon atoms and n is an integer of 2 to 60 inclusive and ##STR18## where R 2 is as previously defined, B is a saturated or unsaturated hydrocarbon residue of 4-24 carbon atoms and m is an integer of 2 to 4 inclusive.

Claim 19

The process in accordance with claim 14 wherein said polyvalent metal is selected from the group magnesium, zinc, strontium, cadmium, calcium, mercury and lead.

Claim 20

The process in accordance with claim 15 wherein R is C 1 to C 4 alkyl, R 1 is C 1 to C 8 alkyl, the polyfunctional monomer is ##STR19## wherein R 2 is as previously defined, n is an integer of 3 to 30 inclusive and B is a saturated or unsaturated hydrocarbon residue of 4-15 carbon atoms.

Claim 21

An optically transparent, radiation shielding material prepared from a monomer of the formula ##STR20## wherein R 1 is selected from the group methyl, ethyl, isopropyl, isobutyl and 2-ethylhexyl; at least one comonomer selected from the group methylmethacrylate, tetraethyleneglycol diacrylate and mixtures thereof; and a free radical initiator.

Claim 22

An optically transparent, radiation shielding material prepared from a monomer of the formula ##STR20## wherein R 1 is selected from the group methyl, ethyl, isopropyl, isobutyl and 2-ethylhexyl; at least one comonomer selected from the group methylmethacrylate, tetraethyleneglycol diacrylate and mixtures thereof; and a free radical initiator.