Mass fixable by actinic radiation, and use of said mass
AssigneeDelo Industrie Klebstoffe GmbH & Co. Kgaa
InventorsMarkus Ehret, Andreas Henschel
Life of this patent
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Abstract
The invention relates to isocyanate-based, storage-stable, one-part compositions that are fixable by irradiation with actinic radiation and curable by heat. The composition comprises (A) an at least bifunctional, solid isocyanate having a passivated surface and a melting point of at least 40° C.; (B) an isocyanate-reactive component selected from the group of alcohols, amines and thiols, and mixtures thereof; (C) a radiation-curable compound; and (D) a photoinitiator. Optionally, further additives (E) can be contained in the composition according to the present invention. The compositions, by fixation with actinic radiation, can be transferred into a state that ensures dimensional stability of the compositions during heat curing.
Claims20
A method of joining of substrates using a one-part, actinic radiation-fixable and heat-curable composition that is liquid and storage-stable at room temperature, including (A) an at least bifunctional solid isocyanate having a passivated surface and a melting point of at least 40° C., (B) an isocyanate-reactive compound selected from the group of alcohols, amines and thiols, and mixtures thereof, the isocyanate-reactive compound including an aromatic diamine, (C) a radiation-curable compound having at least one radically polymerizable group, and (D) at least one photoinitiator for radical polymerization, the method comprising:
- a) dosing the composition onto a first substrate;
- b) feeding a second substrate to form a substrate composite, with the second substrate brought into contact with the curable composition;
- c) irradiating the composition with actinic radiation;
- and
- d) heat-curing the irradiated composition in the substrate composite by heating to a temperature of 60 to 200° C.
A method of joining, casting and/or coating of substrates using a one-part, actinic radiation-fixable and heat-curable composition that is liquid and storage-stable at room temperature including (A) an at least bifunctional solid isocyanate having a passivated surface and a melting point of at least 40° C., (B) an isocyanate-reactive compound selected from the group of alcohols, amines and thiols, and mixtures thereof, the isocyanate-reactive compound including an aromatic diamine, (C) a radiation-curable compound having at least one radically polymerizable group, and (D) at least one photoinitiator for radical polymerization, the method comprising:
- a) dosing the composition onto a first substrate;
- b) irradiating the composition with actinic radiation;
- c) optionally feeding a second substrate to form a substrate composite, with the second substrate brought into contact with the irradiated composition;
- and
- d) heat-curing the irradiated composition on the first substrate or in the substrate composite by heating to a temperature of 60 to 200° C.
A one-part, actinic radiation-fixable and heat-curable composition that is liquid and storage-stable at room temperature, comprising:
- (A) an at least bifunctional solid isocyanate having a passivated surface and a melting point of at least 40° C.;
- (B) an isocyanate-reactive compound selected from the group of alcohols, amines and thiols, and mixtures thereof, the isocyanate-reactive compound comprising an aromatic diamine;
- (C) a radiation-curable compound having at least one radically polymerizable group;
- and
- (D) at least one photoinitiator for radical polymerization.
Dependencies are inferred from the claim text.