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Radiation curable system

A technology of radiation curing and radiation polymerization, applied in chemical instruments and methods, paper/cardboard layered products, layered products, etc., can solve problems such as chemical limitations

Inactive Publication Date: 2009-03-25
J·L·加尼特
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The problem with using currently known water-based materials is that they require the use of very large volumes of water in radiation-curable formulations based on these aqueous dispersions
Also, the chemistries available to design these oligomers are often limited by the specific polyurethane

Method used

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Embodiment Construction

[0124] In this invention it is shown how the problems of the prior art can be overcome by using a new series of novel monomer and oligomer systems which can contain low percentages of water. More importantly, these new systems (compositions) are water compatible, thereby enabling coating handling, especially in-line washing, to be accomplished with aqueous materials. The composition may be a radiation curable water compatible composition which is radiation curable without reducing the water content of the composition prior to curing. The system can be water-dispersible, water-soluble, water-emulsifiable, can form microemulsions in water, or can be water-compatible in some other way. They can be high solids systems. They may have a solids content of at least about 60%, or at least about any of the following percentages: 65, 70, 75, 80, 85, 90, or 95%, or one of the following ranges: about 55 to about 100% , about 60 to about 100%, about 70 to 100, 80 to 100, 90 to 100, 95 to ...

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Abstract

The present invention relates to a process for producing a composite material. A radiation-curable water-compatible composition is applied to the surface of a substrate having a high water content, wherein the composition comprises at least one radiation-polymerisable monomer and / or oligomer, whereby the composition wets the surface of the substrate. The composition on the substrate is then irradiated to produce the composite material. Optionally the monomer and / or oligomer is reacted with a phosphite or a triorganophosphine prior to the irradiation. These compositions may also be applied to low water content substrates.

Description

technical field [0001] The present invention relates to radiation curable systems, in particular to the curing of monomer / oligomer / polymer mixtures by ultraviolet (UV) or ionizing radiation. Background technique [0002] Ionizing radiation includes mechanical sources such as electron beam (EB), X-rays, or elemental sources such as cobalt-60, strontium-90 or cesium-137 which produce gamma rays, among others. UV curing typically uses a photoinitiator to initiate a fast reaction. The main monomer / oligomer / polymer systems used for this approach are acrylates with close to 10% of the market, including epoxies for cationic UV curing. [0003] The problem with these formulations is that they are generally not compatible with water, so in-line processing of coatings made from these materials requires the use of solvents. This should be avoided if possible because the solvent is not environmentally friendly. This difficulty is particularly relevant to washing procedures, which gen...

Claims

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Application Information

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IPC IPC(8): C08L97/02B32B29/00C08J3/28B32B21/00C08G85/00
Inventor J·L·加尼特
Owner J·L·加尼特
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