Polymeric based composition
AssigneeOwens-Illinois, Inc.
InventorsDon N. Gray, John D. Grier
Life of this patent
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Abstract
There is disclosed the preparation of a polymeric based composition comprising a finely divided, particulate inorganic material dispersed in a low molecular weight, low vapor pressure, liquid having a relatively constant viscosity and thixotropic character and capable of being decomposed or pyrolyzed completely to gaseous products at a relatively low temperature without forming a carbonaceous or like residue having a deleterious effect(s) in the application of the composition to a substrate.
Claims16
A polymeric based composition comprising finely-divided, particulate inorganic material comprising at least in part a reducible metal oxide selected from alkali metal oxides, boric oxide and lead oxide, said inorganic material being capable of fusion at a predetermined temperature and being dispersed in a low molecular weight, low vapor pressure, liquid polymer having a molecular weight of less than 1000 and consisting of polystyrene or a poly(alpha-substituted)styrene having the structure ##SPC2##
- where n is an integer greater than 1 and R is selected from alkyls of less than six carbons, said polymer having both relatively constant viscosity and thixotropic character and capable of being pyrolyzed to gaseous products at a temperature below said predetermined fusing temperature of said particulate inorganic material without the formation of a carbonaceous residue reducing said metal oxide in said particulate inorganic material to its elemental state.
A polymeric based coating composition comprising finely-divided, particulate solder glass comprising lead oxide, capable of being fused at a predetermined temperature and dispersed in a low molecular weight, low vapor pressure, liquid polymer having a molecular weight of less than 1000 and being selected from polystyrene and poly(alpha alkyl)styrene, said polymer having a relatively constant viscosity and thixotropic character and capable of being pyrolyzed to gaseous products at a temperature below said predetermined fusing temperature of said particulate solder glass without the formation of a carbonaceous residue serving to reduce said lead oxide to its elemental state.
Dependencies are inferred from the claim text.