A polymerizable composition for an optical component, containing a polyiso(thio)cyanate compound and a polythiol compound, wherein the polythiol compound contains a trifunctional aliphatic polythiol compound and a tetrafunctional aliphatic polythiol compound.

The present invention provides a composition comprising a) at least one epoxy resin, b) at least one cyclic amine of the formula (I) ##STR00001##
in which R.sup.1 to R.sup.4 is H or an organic radical, with the proviso that at least one of the R.sup.1, R.sup.2, R.sup.3 and R.sup.4 radicals ═H, and
X═—(Y.sup.1).sub.m-(A.sup.1).sub.n-(Y.sup.2).sub.o-(A.sup.2).sub.p-(Y.sup.3).sub.q-(A.sup.3).sub.r-(Y.sup.4).sub.s—  (II) where, independently of one another, m, n, o, p, q, r and s=0 or 1, A.sup.1, A.sup.2, A.sup.3=alkylene or alkenylene radical and Y.sup.1, Y.sup.2, Y.sup.3, Y.sup.4═NR.sup.5, PR.sup.5, O or S, where R.sup.5 independently=organic radical, where any two organic radicals selected from R.sup.1 to R.sup.5 and any radicals present in the alkylene and/or alkenylene radicals A.sup.1, A.sup.2, A.sup.3 may also form one or more further rings, with the proviso that at least one of the radicals selected from R.sup.1 to R.sup.5 present and any radicals present in the alkylene and/or alkenylene radicals A.sup.1, A.sup.2, A.sup.3 is substituted by at least one —NHR.sup.6 or —NH.sub.2 group, where R.sup.6=organic radical, and
c) at least one salt of a strong Brønsted acid with a counterion selected from metal ions, metal-containing ions, phosphonium ions and unsubstituted ammonium ions,
where the ratio of the epoxy groups in the epoxy resin to the sum total of all NH groups in all amines is 0.5:1 to 1.5:1,
and to processes for production thereof and use thereof.

There is provided an electrically peelable adhesive composition that is for forming an adhesive layer which has high adhesion and can be easily peeled off by applying a voltage for a short time even at a low voltage. In addition, there is provided an adhesive sheet including an adhesive layer formed of the composition that has high adhesion and can be easily peeled off by applying a voltage for a short time even at a low voltage, and a joined body of the adhesive sheet and an adherend. The electrically peelable adhesive composition of the invention includes a polymer and an ionic liquid, in which an anion of the ionic liquid is a bis(fluorosulfonyl)imide anion. A content of the ionic liquid is preferably 0.5 to 30 parts by weight with respect to 100 parts by weight of the polymer.

There is provided an electrically peelable adhesive composition that is for forming an adhesive layer which has high adhesion and can be easily peeled off by applying a voltage for a short time even at a low voltage. In addition, there is provided an adhesive sheet including an adhesive layer formed of the composition that has high adhesion and can be easily peeled off by applying a voltage for a short time even at a low voltage, and a joined body of the adhesive sheet and an adherend. The electrically peelable adhesive composition of the invention includes a polymer and an ionic liquid, in which an anion of the ionic liquid is a bis(fluorosulfonyl)imide anion. A content of the ionic liquid is preferably 0.5 to 30 parts by weight with respect to 100 parts by weight of the polymer.

The invention relates to the use of branched aliphatic hydrocarbons such as squalane in compositions based on thermoplastic polymer, in particular on polycarbonate, which are used for producing molded parts used in LED lighting units, such as covers for instance. According to the invention it has been found that the use of branched aliphatic hydrocarbons makes it possible to enhance the total transmission and the transmission in the range from 360 to 460 nm, thus making corresponding compositions particularly suitable for producing molded parts for use in combination with white LED light sources. It has additionally been shown that yellowing and haze are simultaneously reduced.

The invention relates to the use of branched aliphatic hydrocarbons such as squalane in compositions based on thermoplastic polymer, in particular on polycarbonate, which are used for producing molded parts used in LED lighting units, such as covers for instance. According to the invention it has been found that the use of branched aliphatic hydrocarbons makes it possible to enhance the total transmission and the transmission in the range from 360 to 460 nm, thus making corresponding compositions particularly suitable for producing molded parts for use in combination with white LED light sources. It has additionally been shown that yellowing and haze are simultaneously reduced.

The purpose of the present invention is to provide a conductive metal paste having improved conductivity without increasing the amount of a conductive filler to be added. The conductive metal paste contains a metal filler and less than 1 mass % of an ionic liquid, and does not contain carbon nanotubes.

Polyoxazoline-containing compositions cured in the presence of an onium salt catalyst are disclosed.

Polyoxazoline-containing compositions cured in the presence of an onium salt catalyst are disclosed.

Polyoxazoline-containing compositions cured in the presence of an onium salt catalyst are disclosed.