Method for preparing high solids films employing a plurality of curing mechanisms
First Claim
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1. A method for preparing high solids films comprising subjecting a film of a mixture comprisinga. a radiation sensitive liquid material;
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c. a first class consisting of ionizing irradiation and actinic light, ord. a second class consisting of oxidation, moisture and heating to partially cure said mixture and subsequently completely curing the remainder of said mixture by subjecting said partially cured mixture to a member of the other of said classes of curing conditions to form a film which is flexible and abrasion resistant.
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Abstract
Conventional thermosetting resins are thinned with radiation sensitive or actinic light sensitive materials and then subjected to a dual cure wherein the material is first subjected to ionizing irradiation or actinic light and then to the conventional curing mechanism of the thermosetting resin. The resultant film contains the properties of both the radiation sensitive material and the conventional thermosetting resin and is easily applied as a coating.
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15 Claims
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1. A method for preparing high solids films comprising subjecting a film of a mixture comprising
a. a radiation sensitive liquid material; - and
b. a radiation insensitive thermosetting resin wherein said radiation sensitive liquid material is present in said mixture in an amount in the range of from about 20 to about 90 percent by weight and wherein said radiation insensitive thermosetting resin is present in said mixture in an amount in the range of from about 10 to about 80 percent by weight, to a member of either of the following two classes of crosslinking conditions; c. a first class consisting of ionizing irradiation and actinic light, or d. a second class consisting of oxidation, moisture and heating to partially cure said mixture and subsequently completely curing the remainder of said mixture by subjecting said partially cured mixture to a member of the other of said classes of curing conditions to form a film which is flexible and abrasion resistant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for preparing high solids films comprising subjecting a film of a mixture comprising
a. radiation sensitive liquid esters of acrylic acid; - and
b. radiation insensitive thermosetting polyurethane resin wherein said radiation sensitive liquid esters of acrylic acid are present in said mixture in an amount in the range of from about 20 to about 90 percent by weight and wherein said radiation insensitive thermosetting polyurethane resin is present in said mixture in an amount in the range of from about 10 to about 80 percent by weight, to a member of either of the following two classes of crosslinking conditions. c. a first class consisting of ionizing irradiation and actinic light, or d. a second class consisting of oxidation, moisture and heating to partially cure said mixture and subsequently completely curing the remainder of said mixture by subjecting said partially cured mixture to a member of the other of said classes of curing conditions to form a film which is flexible and abrasion resistant.
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Specification