초록 ▼

A process is described for producing molding compounds and coatings on substrates by curing radiation-curable compositions under inert gas by exposure to light wherein said inert gas comprises a gas heavier than air, and lateral escape of the inert gas in the course of radiation curing is prevented

A process is described for producing molding compounds and coatings on substrates by curing radiation-curable compositions under inert gas by exposure to light wherein said inert gas comprises a gas heavier than air, and lateral escape of the inert gas in the course of radiation curing is prevented by means of appropriate apparatus or other measures.

대표청구항 ▼

We claim: 1. A process for coating a floor, comprising: coating the surface of the floor with a radiation-curable composition, placing vertical partitions along the boundaries of the floor, wherein the partitions prevent the lateral escape of gas, then introducing carbon dioxide gas to form a carbo

We claim: 1. A process for coating a floor, comprising: coating the surface of the floor with a radiation-curable composition, placing vertical partitions along the boundaries of the floor, wherein the partitions prevent the lateral escape of gas, then introducing carbon dioxide gas to form a carbon dioxide gas-containing atmosphere over the floor, then exposing the radiation-curable composition-coated floor surface to light radiation to cure the radiation-curable composition. 2. The process of claim 1, wherein introducing the carbon dioxide gas into the enclosed environment includes: placing dry ice over the floor to force air upward, and evaporating the dry ice to form the carbon dioxide gas-containing atmosphere. 3. The process of claim 1, wherein the carbon dioxide gas is introduced from gas bottles. 4. The process of claim 1, wherein the amount of oxygen gas present in the carbon dioxide gas-containing atmosphere is 15% by weight or less based on the total amount of gas in the carbon dioxide gas-containing atmosphere. 5. The process of claim 1, wherein the amount of oxygen gas present in the carbon dioxide gas-containing atmosphere is 1% by weight or less based on the total amount of the gas in the carbon dioxide gas-containing atmosphere. 6. The process of claim 1, wherein the amount of oxygen gas present in the carbon dioxide gas-containing atmosphere is 0.1% by weight or less based on the total amount of gas in the carbon dioxide gas-containing atmosphere. 7. The process as claimed in claim 1, wherein the radiation-curable composition comprises from 0.001 to 12 mol of radiation-curable ethylenically unsaturated groups per 1,000 gm of the radiation-curable composition. 8. The process of claim 7, wherein at least 60 mol % of the radiation-curable ethylenically unsaturated groups are (meth) acrylic groups. 9. The process as claimed in claim 1, wherein the radiation-curable composition comprises less than 10 parts by weight of a photoinitiator per 100 parts by weight of the total amount of the radiation-curable composition. 10. The process as claimed in claim 1, wherein the radiation is light having a wavelength above 300 nm. 11. The process of claim 1, wherein the floor is made of one or more selected from the group consisting of a wood, a plastic, a metal, a mineral material and a ceramic. 12. The process of claim 1, wherein placing partitions around at least a portion of the floor includes adhesively bonding a film to the floor up to a height of 40 cm from the floor. 13. The process of claim 1, wherein the dry ice is placed over the floor by hang mounting one or more dry ice containers above the floor.