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US 5,658,712 AGranted
(Meth)acrylates containing urethane groups
AssigneeCiba-Geigy Corporation
InventorsBettina Steinmann, Jean-Pierre Wolf, Adrian Schulthess, Max Hunziker
Life of this patent
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Abstract
Novel (meth)acrylates which also contain urethane groups and other polymerizable groups in one and the same molecule and can be polymerized either by means of free radicals and/or cationically are used for the production of coatings, adhesives, photoresists, solder masks or in stereolithography. The mouldings produced therefrom contain a coherent, homogeneous network and have high strength properties, in particular mechanical properties.
Claims14
A composition comprising
- a) from 5 to 99% by weight of a monomeric, polymerizable (meth)acrylate of the formula I containing urethane groups, ##STR31## in which R is a divalent group of the formula ##STR32## R.sub.1 is a cationically polymerizable group or a free-radical-polymerizable group, with the exception of the acrylate and allyl groups,
- R.sub.2 is an aliphatic, cycloaliphatic or aromatic radical,
- R.sub.3 is hydrogen or CH.sub.3,
- R.sub.4 is the radical of an aliphatic, cycloaliphatic or aromatic diglycidyl compound after removal of the diglycidyl radical, or is the radical of a cycloaliphatic diepoxide, and
- R.sub.5 is a cycloaliphatic bridge,
- b) from 1 to 10% by weight of a free-radical photoinitiator,
- c) from 0 to 20% by weight of conventional additives,
- d) from 0 to 80% by weight of one or more mono-, di- or polyfunctional (meth)acrylates or mixtures thereof,
- e) from 0 to 80% by weight of a di- or polyfunctional epoxide, or mixtures thereof,
- f) from 0 to 50% by weight of an OH-terminated polyether or polyester, or mixtures thereof,
- g) from 0 to 5% by weight of a cationic photoinitiator, and
- h) from 0 to 80% by weight of one or more mono-, di- or polyfunctional vinyl ethers, where the proportion of components a) to h) together is 100% by weight.
9 more elements
Dependencies are inferred from the claim text.