A method for rapidly repairing a road surface includes: forming a base layer reinforcing material by low-shrinkage unsaturated polyester resin, diluent, expansion agent, accelerator, and polymerization inhibitor, adding a curing agent and pouring into a base layer at a damaged part of the road surface until infiltration is stopped; laying chopped basalt fiber, forming a surface layer repair material by acrylate monomer, acrylic resin polymer, silane coupling agent, calcium carbonate powder, talc powder, quartz sand, metal hydroxide flame retardant and accelerator, polymerization inhibitor and short cut basalt fiber; adding curing agent to fill the road surface and solidifying. The repairing method can not only play a reinforcing effect on the road base, but also repair the surface layer on the damaged parts such as cracks on road surface, so as to realize the dual functions of the base layer reinforcement and the surface layer repair.

A method for rapidly repairing a road surface includes: forming a base layer reinforcing material by low-shrinkage unsaturated polyester resin, diluent, expansion agent, accelerator, and polymerization inhibitor, adding a curing agent and pouring into a base layer at a damaged part of the road surface until infiltration is stopped; laying chopped basalt fiber, forming a surface layer repair material by acrylate monomer, acrylic resin polymer, silane coupling agent, calcium carbonate powder, talc powder, quartz sand, metal hydroxide flame retardant and accelerator, polymerization inhibitor and short cut basalt fiber; adding curing agent to fill the road surface and solidifying. The repairing method can not only play a reinforcing effect on the road base, but also repair the surface layer on the damaged parts such as cracks on road surface, so as to realize the dual functions of the base layer reinforcement and the surface layer repair.

A photocurable composition is provided. A cured product formed by curing the photocurable composition has reworkability and excellent heat resistance while having flexibility. The photocurable composition includes a telechelic acrylic polymer having an acryloyl group at both ends; a polyfunctional acrylic polymer having acryloyl groups; a monofunctional acrylic monomer; and a fumed silica including at least one of a hydrophilic fumed silica or a fumed silica having a polar group. The photocurable composition has a Martens hardness of 0.07 to 0.75 N/mm.sup.2, where the Martens hardness is a hardness after the photocurable composition is cured.

A photocurable composition is provided. A cured product formed by curing the photocurable composition has reworkability and excellent heat resistance while having flexibility. The photocurable composition includes a telechelic acrylic polymer having an acryloyl group at both ends; a polyfunctional acrylic polymer having acryloyl groups; a monofunctional acrylic monomer; and a fumed silica including at least one of a hydrophilic fumed silica or a fumed silica having a polar group. The photocurable composition has a Martens hardness of 0.07 to 0.75 N/mm.sup.2, where the Martens hardness is a hardness after the photocurable composition is cured.

Cyanoacrylate compositions, methods for forming same, and applications thereof are disclosed. The compositions demonstrate improved thermal ageing performance, including improved tensile strength performance after heat ageing in high humidity.

Cyanoacrylate compositions, methods for forming same, and applications thereof are disclosed. The compositions demonstrate improved thermal ageing performance, including improved tensile strength performance after heat ageing in high humidity.

Cyanoacrylate compositions, methods for forming same, and applications thereof are disclosed. The compositions demonstrate improved thermal ageing performance, including improved tensile strength performance after heat ageing in high humidity.

The present invention provides multilayer coated substrates, prepared using primer and/or sealer compositions comprising waterborne curable film-forming compositions, in turn comprising: a) an aqueous dispersion of a pigment and i) polymeric urethane-shell particles having a care-shell morphology and having hydroxyl functional groups, wherein the core is prepared from a monomer mixture comprising hydrophobic, ethylenically unsaturated monomers and the shell comprises a polyurethane or polyurethane-urea polymer; or ii) polymeric acrylic-shell particles having a core-shell morphology and having hydroxyl functional groups, wherein the core is prepared from a monomer mixture comprising hydrophobic, ethylenically unsaturated monomers and the shell is prepared from a monomer mixture comprising hydrophilic, ethylenically unsaturated monomers; b) a polyisocyanate crosslinking agent; and optionally c) a hydroxyl functional, water dispersible acrylic polymer.

The present invention provides multilayer coated substrates, prepared using primer and/or sealer compositions comprising waterborne curable film-forming compositions, in turn comprising: a) an aqueous dispersion of a pigment and i) polymeric urethane-shell particles having a care-shell morphology and having hydroxyl functional groups, wherein the core is prepared from a monomer mixture comprising hydrophobic, ethylenically unsaturated monomers and the shell comprises a polyurethane or polyurethane-urea polymer; or ii) polymeric acrylic-shell particles having a core-shell morphology and having hydroxyl functional groups, wherein the core is prepared from a monomer mixture comprising hydrophobic, ethylenically unsaturated monomers and the shell is prepared from a monomer mixture comprising hydrophilic, ethylenically unsaturated monomers; b) a polyisocyanate crosslinking agent; and optionally c) a hydroxyl functional, water dispersible acrylic polymer.

The present invention relates to a process for impregnating a fibrous substrate consisting of long fibers by a liquid (meth)acrylic mixture mainly containing methacrylic and/or acrylic components. The invention also relates to such a (meth)acrylic mixture and its composition, said (meth)acrylic mixture comprising a (meth)acrylic syrup and an aqueous dispersion of radical initiator. The invention also relates to a process for manufacturing mechanical parts or structured elements or articles made of composite material by impregnating the fibrous substrate with the (meth)acrylic mixture then polymerizing said (meth)acrylic mixture, and also such parts obtained according to said manufacturing process and used in varied fields such as the automotive industry, aeronautics, or else construction.