To provide a fluorinated copolymer composition whereby a crosslinked rubber article which has a low compression set at high temperature and which is not broken after compression can be formed, and a crosslinked rubber article.

The fluorinated copolymer composition of the present invention comprises a fluorinated copolymer having nitrile groups, a phosphorus compound having a melting point of 60° C. or lower and a crosslinking agent.

To provide a fluorinated copolymer composition whereby a crosslinked rubber article which has a low compression set at high temperature and which is not broken after compression can be formed, and a crosslinked rubber article.

The fluorinated copolymer composition of the present invention comprises a fluorinated copolymer (A) having units having a nitrile group and units based on tetrafluoroethylene, a fluorinated copolymer (B) having units having at least one functional group selected from the group consisting of a group having a carbonyl group, a hydroxy group, an epoxy group and an isocyanate group and units based on tetrafluoroethylene, and a crosslinking agent.

To provide a fluorinated copolymer composition whereby a crosslinked rubber article which has a low compression set at high temperature and which is not broken after compression can be formed, and a crosslinked rubber article.

The fluorinated copolymer composition of the present invention comprises a fluorinated copolymer (A) having units having a nitrile group and units based on tetrafluoroethylene, a fluorinated copolymer (B) having units having at least one functional group selected from the group consisting of a group having a carbonyl group, a hydroxy group, an epoxy group and an isocyanate group and units based on tetrafluoroethylene, and a crosslinking agent.

Disclosed herein are compositions, formulations, applications, and methods of making a fire resistant material. The fire resistant material is a transparent acrylic material that incorporates a primary polymer, nanostructured fillers, and crosslinkers. The nanostructured filler is polyhedral oligomeric silsesquioxane (POSS) or a POSS derivative that has a cage like structure. The fire resistant material may also include various components such as brominated additives and phosphorous based synergists. The fire resistant material may be used for various applications including wall claddings and glazings.

Disclosed herein are compositions, formulations, applications, and methods of making a fire resistant material. The fire resistant material is a transparent acrylic material that incorporates a primary polymer, nanostructured fillers, and crosslinkers. The nanostructured filler is polyhedral oligomeric silsesquioxane (POSS) or a POSS derivative that has a cage like structure. The fire resistant material may also include various components such as brominated additives and phosphorous based synergists. The fire resistant material may be used for various applications including wall claddings and glazings.

The present invention relates to a homogeneous liquid/fluid combination of photoinitiators with improved formulability, reactivity and surface curing performances, more particularly to novel combinations of acylphosphine oxides and ketocoumarins, optionally further combined with at least one co-initiator.

The present invention relates to a homogeneous liquid/fluid combination of photoinitiators with improved formulability, reactivity and surface curing performances, more particularly to novel combinations of acylphosphine oxides and ketocoumarins, optionally further combined with at least one co-initiator.

This photosensitive resin composition comprises: a photosensitive prepolymer having a carboxyl group and an ethylenically unsaturated group; a photopolymerization initiator; a thermosetting agent; and a pigment. The thermosetting agent is a polycarbodiimide compound represented by formula (1), in which a carbodiimide group is protected by an amino group that dissociates at temperatures of 80□ or greater. The polycarbodiimide compound has a weight average molecular weight of 300-3000, and a carbodiimide equivalent weight of 150-600. When formed into a film having a dry film thickness of 10-40 μm, the maximum value of the transmittance of the photosensitive resin composition is at least 7% for the transmission spectrum of at least some of the wavelength from 350-430 nm. (In formula (1), R.sup.1, R.sup.2, X.sup.1, X.sup.2, and n are as defined in the description.)

This photosensitive resin composition comprises: a photosensitive prepolymer having a carboxyl group and an ethylenically unsaturated group; a photopolymerization initiator; a thermosetting agent; and a pigment. The thermosetting agent is a polycarbodiimide compound represented by formula (1), in which a carbodiimide group is protected by an amino group that dissociates at temperatures of 80□ or greater. The polycarbodiimide compound has a weight average molecular weight of 300-3000, and a carbodiimide equivalent weight of 150-600. When formed into a film having a dry film thickness of 10-40 μm, the maximum value of the transmittance of the photosensitive resin composition is at least 7% for the transmission spectrum of at least some of the wavelength from 350-430 nm. (In formula (1), R.sup.1, R.sup.2, X.sup.1, X.sup.2, and n are as defined in the description.)

A photoinitiated polymerizable composition for 3D printing, the polymerizable composition comprising a nanogel component that comprises nanogel particles, wherein the nanogel particles comprise a copolymer with polymerizable reactive groups suitable for reacting with each other or a reactive diluent monomer, a reactive oligomer, a resin, or a combination thereof that is present in the polymerizable composition upon photoinitiation, wherein the nanogel component has a glass transition temperature that is in a range of about −50 C and about 20 C and an average molecular weight that is in a range of about 10 kg/mol and about 100 kg/mol, and wherein the nanoparticles have an average hydrodynamic radius that is in a range of 1 nm to about 5 nm.