Crosslinkable compositions having a low viscosity for coatings and materials having a high refractive index and having a high heat deflection temperature
AssigneeArkema France
InventorGuillaume Monnier
Life of this patent
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Abstract
The invention relates to a crosslinkable composition, which comprises a component a) at least one halogenated bisphenol A diglycidyl ether tetra(meth)acrylate and a component b) at least one diluent from mono(meth)acrylates of a monoalcohol comprising a biphenyl structure, and at least one optional component from components c), d), e), f) and g). It also relates to its use for coatings or materials, in particular for 3D printed articles for optical applications, as it also relates to the crosslinked composition and to the finished product, in particular the 3D article which results therefrom.
Claims32
Crosslinkable composition comprising as component a) at least one halogenated bisphenol A diglycidyl ether tetra(meth)acrylate and as component b) at least one diluent from mono(meth)acrylates of a monoalcohol comprising a biphenyl structure, said biphenyl optionally being halogenated,
- and optionally at least one component chosen from components c), d), e), f) and g) as defined as follows:
- c) at least one (meth)acrylated oligomer carrying at least 4 (meth)acrylate functional groups per chain, said oligomer comprising at least 2 units of halogenated bisphenol A structure in the chain of said oligomer,
- d) at least one di(meth)acrylate of an epoxidized biphenyl derivative, said biphenyl derivative optionally being halogenated,
- e) an optionally halogenated bisphenol A diglycidyl ether di(meth)acrylate,
- f) at least one monomer other than a), b), d) and e),
- g) at least one oligomer from urethane (meth)acrylate, polyester (meth)acrylate and polyether (meth)acrylate.
Dependencies are inferred from the claim text.