Chlorinated polymeric compositions useful as primers for polyolefins
AssigneeEastman Kodak Company
InventorRaymond L. Etter, Jr.
Life of this patent
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Abstract
This invention is concerned with new primers and with paint and ink additives which will improve adhesion of decorative and protective coatings to polyolefins, especially low and high density polyethylene. These new materials are prepared by the solution chlorination of a mixture of a hydrocarbon resin and a high molecular weight high density polyethylene or the blending of separately chlorinated hydrocarbon resins and high density polyethylene. The amount of hydrocarbon resin may vary from about 20 to 80 percent and the chlorine content of the chlorinated mixture or blend is from about 15 to about 35 percent by weight.
Claims31
A chlorinated polymeric composition useful as a primer for polyolefin surfaces containing from about 15 to about 35 weight percent chlorine comprising a blend of from about 20 to 80 weight percent of at least one chlorinated polyethylene prepared from polyethylene having a density greater than 0.96 and a melt index at 190.degree. C. of from about 0.5 to about 50 and about 80 to 20 weight percent of at least one chlorinated synthetic hydrocarbon resin selected from the group consisting of DAC-B hydrocarbon resin, synthetic polyterpenes, and low molecular weight polystyrene resins.
A chlorinated polymeric composition useful as a primer for polyolefin surfaces containing from about 15 to about 35 weight percent chlorine comprising a blend of from about 40 to 70 weight percent of at least one chlorinated polyethylene prepared from polyethylene having a density greater than 0.96 and a melt index at 190.degree. C. of from about 0.5 to about 50 and about 60 to 30 weight percent of at least one chlorinated synthetic hydrocarbon resin selected from the group consisting of DAC-B hydrocarbon resin, synthetic polyterpenes, and low molecular weight polystyrene resins.
A chlorinated polymeric composition useful as a primer for polyolefin surfaces containing from about 20 to about 27 weight percent chlorine comprising a blend of from about 20 to 80 weight percent of at least one chlorinated polyethylene prepared from polyethylene having a density greater than 0.96 and a melt index at 190.degree. C. of from about 0.5 to about 50 and about 80 to 20 weight percent of at least one chlorinated synthetic hydrocarbon resin selected from the group consisting of DAC-B hydrocarbon resin, synthetic polyterpenes, and low molecular weight polystyrene resins.
A chlorinated polymeric composition useful as a primer for polyolefin surfaces containing from about 20 to about 27 weight percent chlorine comprising a blend of from about 40 to 70 weight percent of at least one chlorinated polyethylene prepared from polyethylene having a density greater than 0.96 and a melt index at 190.degree. C. of from about 0.5 to about 50 and about 60 to 30 weight percent of at least one chlorinated synthetic hydrocarbon resin selected from the group consisting of DAC-B hydrocarbon resin, synthetic polyterpenes, and low molecular weight polystyrene resins.
A chlorinated polymeric composition useful as a primer for polyolefin surfaces containing about 23 weight percent chlorine comprising a blend of from about 20 to 80 weight percent of at least one chlorinated polyethylene prepared from polyethylene having a density greater than 0.96 and a melt index at 190.degree. C. of from about 0.5 to about 50 and about 80 to 20 weight percent of at least one chlorinated synthetic hydrocarbon resin selected from the group consisting of DAC-B hydrocarbon resin, synthetic polyterpenes, and low molecular weight polystyrene resins.
A chlorinated polymeric composition useful as a primer for polyolefin surfaces containing from about 23 weight percent chlorine comprising a blend of from about 40 to 70 weight percent of at least one chlorinated polyethylene prepared from polyethylene having a density greater than 0.96 and a melt index at 190.degree. C. of from about 0.5 to about 50 and about 60 to 30 weight percent of at least one chlorinated synthetic hydrocarbon resin selected from the group consisting of DAC-B hydrocarbon resin, synthetic polyterpenes, and low molecular weight polystyrene resins.
A method for preparing a chlorinated polymeric composition useful as a primer for polyolefin surfaces comprising preparing a blend containing from about 20 to 80 weight percent of a polyethylene having a density greater than 0.96 and a melt index at 190.degree. C. of from about 0.5 to about 50 and about 80 to 20 weight percent of a synthetic hydrocarbon resin selected from the group consisting of DAC-B hydrocarbon resin, synthetic polyterpenes, and low molecular weight polystyrene resins and having a softening point of from about 70.degree. C. to about 140.degree. C. and solution chlorinating the blend to a chlorine content of from about 15 to about 35 weight percent chlorine.
A method for preparing a chlorinated polymeric composition useful as a primer for polyolefin surfaces which comprise preparing a blend containing about 20 to 80 weight percent chlorinated polyethylene prepared from polyethylene having a density greater than 0.96 and a melt index at 190.degree. C. of from about 0.5 to about 50 and about 80 to 20 weight percent of a chlorinated synthetic hydrocarbon resin prepared from synthetic hydrocarbon resin selected from the group consisting of DAC-B hydrocarbon resin, synthetic polyterpenes, and low molecular weight polystyrene resins and having a softening point of from about 70.degree. C. to about 140.degree. C. to provide a blend having a chlorine content of from about 15 to about 35 weight percent chlorine.
Dependencies are inferred from the claim text.