The present invention is related to a carboxylated styrene butadiene polymer latex, a method for making such and its application as binders for paper coating. In particular, the latex shows excellent wet rub performance and peel off performance. The latex may find applications as binders for paper coating.

The present invention is related to a carboxylated styrene butadiene polymer latex, a method for making such and its application as binders for paper coating. In particular, the latex shows excellent wet rub performance and peel off performance. The latex may find applications as binders for paper coating.

The invention relates to a diorganomagnesium compound of formula R.sup.B—Mg—R.sup.A, R.sup.B being different from R.sup.A, R.sup.B comprising a benzene nucleus substituted with a magnesium atom, one of the carbon atoms of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl, an isopropyl or forming a ring with the carbon atom which is its closest neighbour and which is meta to the magnesium, the other carbon atom of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl or an isopropyl, R.sup.A being an alkyl, a cycloalkyl or a benzyl, which may be substituted or unsubstituted, which diorganomagnesium compound is other than n-butylmesitylmagnesium. When used as co-catalyst of a metallocene, it makes it possible to increase the functional group content in the synthesis of a functional polymer.

The invention relates to a diorganomagnesium compound of formula R.sup.B—Mg—R.sup.A, R.sup.B being different from R.sup.A, R.sup.B comprising a benzene nucleus substituted with a magnesium atom, one of the carbon atoms of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl, an isopropyl or forming a ring with the carbon atom which is its closest neighbour and which is meta to the magnesium, the other carbon atom of the benzene nucleus ortho to the magnesium being substituted with a methyl, an ethyl or an isopropyl, R.sup.A being an alkyl, a cycloalkyl or a benzyl, which may be substituted or unsubstituted, which diorganomagnesium compound is other than n-butylmesitylmagnesium. When used as co-catalyst of a metallocene, it makes it possible to increase the functional group content in the synthesis of a functional polymer.

The present disclosure provides a composition. In an embodiment, the composition is an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The composition includes ethylene monomer and a mixture of hydrocarbon-based molecules. Each hydrocarbon-based molecule includes three or more internal alkene groups.

The present disclosure provides a composition. In an embodiment, the composition is an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The composition includes ethylene monomer and a mixture of hydrocarbon-based molecules. Each hydrocarbon-based molecule includes three or more internal alkene groups.

The present disclosure relates to a modified conjugated diene-based polymer, a method for preparing the same and a rubber composition comprising the same, and the modified conjugated diene-based polymer has narrow molecular weight distribution, and includes S atoms in the specific content in the polymer, a derived unit from an N-containing aromatic hydrocarbon compound, a derived unit from an S-containing aromatic hydrocarbon compound or an S-containing heterocyclic compound.

The present disclosure relates to a modified conjugated diene-based polymer, a method for preparing the same and a rubber composition comprising the same, and the modified conjugated diene-based polymer has narrow molecular weight distribution, and includes S atoms in the specific content in the polymer, a derived unit from an N-containing aromatic hydrocarbon compound, a derived unit from an S-containing aromatic hydrocarbon compound or an S-containing heterocyclic compound.

A low-dielectric rubber resin material and a low-dielectric metal substrate are provided. The rubber resin material includes a low-dielectric rubber resin composition and inorganic fillers. The low-dielectric rubber resin composition includes: 5 wt % to 40 wt % of a liquid rubber, 20 wt % to 70 wt % of a polyphenylene ether resin, 5 wt % to 30 wt % of a bismaleimide resin, and 20 wt % to 45 wt % of a crosslinker. A molecular weight of the liquid rubber ranges from 800 g/mol to 6000 g/mol. An iodine value of the liquid rubber ranges from 30 g/100 g to 60 g/100 g.

A low-dielectric rubber resin material and a low-dielectric metal substrate are provided. The rubber resin material includes a low-dielectric rubber resin composition and inorganic fillers. The low-dielectric rubber resin composition includes: 5 wt % to 40 wt % of a liquid rubber, 20 wt % to 70 wt % of a polyphenylene ether resin, 5 wt % to 30 wt % of a bismaleimide resin, and 20 wt % to 45 wt % of a crosslinker. A molecular weight of the liquid rubber ranges from 800 g/mol to 6000 g/mol. An iodine value of the liquid rubber ranges from 30 g/100 g to 60 g/100 g.