Abstract: A glass interleavant particle composition for location between adjacent stacked glass sheets. The composition includes a) inorganic interleavant particles and b) polymeric adhesion promoter particles in which the inorganic particles are solid up to at least 100° C. have a compressive strength of at least 3 MPa and have a volumetric mass density less than 7.5 g/cm3 at 25° C.

Abstract: There is described interleavant particles for location between adjacent stacked glass sheets, the interleavant particles comprising an inorganic core with an outer coating, the outer coating comprising a biodegradable and/or water soluble polymer or film forming material, wherein the inorganic core is solid up to at least 100° C. has a compressive strength of at least 3 MPa and has a volumetric mass density less than 7.5 g/cm3 at 25° C.

Abstract: An additive manufacturing composition for a 3-D printed object such as a dental product, typically, a dental prosthesis is described. The composition has: —a. an acrylic polymer having ethyl methacrylate (EM A) residues, b. a crosslinker having at least two reactive terminal groups that are capable of polymerisation, typically, each of the said at least two reactive terminal groups being (alk)acrylate groups, more typically, one or both of the at least two reactive terminal groups are alkacrylate groups, most typically, methacrylate groups, c. a reactive diluent in the form of a flowable liquid at 25° C., d. a suitable initiator and optionally a suitable co-initiator. A process for the production of an additive manufacturing composition, a 3-D printed object, an additive manufacturing process, use of the composition in additive manufacturing and for producing a 3-D printed object and an additive manufacturing vat, bath or cartridge are also described.

Abstract: The invention relates to a hardenable multi-part acrylic composition. The composition has at least two parts which react with each other upon being mixed together to progressively harden to form a solid cement, such as a bone cement. The beads in the first part comprise an acrylic bead polymer core produced by suspension polymerisation and having a Tg of >70° C. and emulsion polymerised acrylic microparticles at least partially coating the surface of the acrylic bead polymer core. The microparticles may form a porous coalesced network. The bone cement composition comprises the first part and a liquid second part and optionally, further parts. The parts are operable to form a cement which hardens to a solid mass upon mixing of the parts together. The composition further comprises an acrylic monomer component in the second part and an initiator component. A method of production of coated beads for the hardenable multipart composition and a solid cement is also described.

Abstract: A hardenable multi-part acrylic composition having at least two parts that react upon mixing to form a cement, such as bone cement, which hardens to a solid is described that includes storage stable liquid first and second parts, and optionally, further liquid parts. The parts react upon mixing to form a cement that hardens to a solid. The composition includes an acrylic monomer component and an initiator component in an amount effective to polymerize the acrylic monomer component when mixed and/or activated with it. The liquid first part comprises an aqueous dispersion of acrylic polymer particles and acrylic polymer beads. The polymer beads are at an equilibrium water content with the aqueous phase of the dispersion that generally has a viscosity between 10 and 10,000 centipoise. A twin barreled syringe, caulking gun or other cement mixing and delivery device and a method of producing the composition are also described.

Abstract: An additive manufacturing composition for powder bed processes is described. The composition includes at least a first type of impact modified polymer beads. The polymer beads include a) an acrylic or vinyl (co)polymer matrix, and b) an impact modifier in which at least 85% w/w of the first type of impact modified polymer beads have a particle size of between ?20 ?m and ?200 ?m and/or on average the impact modified polymer beads have greater than 5% w/w impact modifier. Also disclosed is an additive manufacturing process for a production of a three dimensional product comprising fused impact modified polymer particles. The use of a composition in additive manufacturing, an additive manufacturing cartridge or replacement hopper and a process for the production of impact modified polymer beads by a suspension polymerization process is also disclosed.

Abstract: A hardenable multi-part acrylic composition having at least two parts that react upon mixing to form a cement, such as bone cement, which hardens to a solid is described that includes storage stable liquid first and second parts, and optionally, further liquid parts. The parts react upon mixing to form a cement that hardens to a solid. The composition includes an acrylic monomer component and an initiator component in an amount effective to polymerize the acrylic monomer component when mixed and/or activated with it. The liquid first part comprises an aqueous dispersion of acrylic polymer particles and acrylic polymer beads. The polymer beads are at an equilibrium water content with the aqueous phase of the dispersion that generally has a viscosity between 10 and 10,000 centipoise. A twin barrelled syringe, caulking gun or other cement mixing and delivery device and a method of producing the composition are also described.

Abstract: The invention relates to a hardenable multi-part acrylic composition. The composition has at least two parts which react with each other upon being mixed together to progressively harden to form a solid cement, such as a bone cement. The beads in the first part comprise an acrylic bead polymer core produced by suspension polymerisation and having a Tg of >70° C. and emulsion polymerised acrylic microparticles at least partially coating the surface of the acrylic bead polymer core. The microparticles may form a porous coalesced network. The bone cement composition comprises the first part and a liquid second part and optionally, further parts. The parts are operable to form a cement which hardens to a solid mass upon mixing of the parts together. The composition further comprises an acrylic monomer component in the second part and an initiator component. A method of production of coated beads for the hardenable multipart composition and a solid cement is also described.

Abstract: A multi-part acrylic cold curing composition for metallography moulds to produce a metallography mount is described. The composition has a storage stable solid part and a storage stable liquid part. The parts are operable to form a mixture which polymerises to a solid mass upon mixing of the parts together. The solid part comprises polymer powder and initiator and the liquid part comprises acrylic monomer and optionally activator or accelerator. The initiator is present in an amount effective to polymerize the acrylic monomer component upon being mixed with the liquid part. The composition comprises a cyclic ester side group containing monofunctional acrylic monomer. The composition liquid part may contain a mixture of monofunctional monomer(s) and polyfunctional monomer(s), wherein the polyfunctional monomers comprise between 12 and 22% w/w of the total monomers in the uncured composition. Metallography mounts and processes for producing the mounts are also described.

Abstract: An additive manufacturing composition for powder bed processes is described. The composition includes at least a first type of impact modified polymer beads. The polymer beads include a) an acrylic or vinyl (co)polymer matrix, and b) an impact modifier in which at least 85% w/w of the first type of impact modified polymer beads have a particle size of between ?20 ?m and ?200 ?m and/or wherein on average the impact modified polymer beads have greater than 5% w/w impact modifier. Also disclosed is an additive manufacturing process for a production of a three dimensional product comprising fused impact modified polymer particles. The use of a composition in additive manufacturing, an additive manufacturing cartridge or replacement hopper and a process for the production of impact modified polymer beads by a suspension polymerization process is also disclosed.

Abstract: A hardenable multi-part acrylic composition comprises a solid first part and a storage stable liquid second part and optionally, further solid and/or liquid parts, the parts being operable to form a cement which hardens to a solid mass upon mixing. The composition further comprises an acrylic monomer component in the second part, an initiator component, a first sub-population of acrylic polymer particles in the first and/or further parts, a second sub-population of acrylic polymer particles in the first and/or further parts and optionally, one or more further sub-population(s) of acrylic polymer particles, and a radiopacifying filler. The initiator component amount is effective to polymerize the acrylic monomer component upon mixing. At least some of the radiopacifying filler is encapsulated within and/or adsorbed on the first sub-population of acrylic polymer particles and the second sub-population of acrylic polymer particles has a lower average particle size than the first.

Abstract: The invention relates to a hardenable multi-part liquid acrylic composition. The composition comprises a storage stable liquid first part, a storage stable liquid second part and optionally, a third or further liquid parts. The parts are operable to form a cement which hardens to a solid upon mixing of the parts together. The composition comprises an acrylic monomer component, an initiator component, acrylic polymer particles and a radiopacifying filler. The initiator component is present in an amount of effective to polymerize the acrylic monomer component upon being mixed and/or activated therewith. At least some of the radiopacifying filler is encapsulated within and/or adsorbed on the acrylic polymer particles in a liquid part.

Abstract: A hardenable two part acrylic composition is described for the treatment of human or animal bone is described. The composition comprises a storage stable liquid first part and a storage stable liquid second part which react with each other upon mixing to form a cement which hardens. The composition further comprises an acrylic monomer component and an initiator component in an amount effective to polymerize the monomer component. The monomer component and the initiator component are generally located in separate parts of the two part composition so that the monomer component is storage stable. The liquid first part comprises emulsion polymerized acrylic polymer particles in a liquid carrier. A method of producing a hardenable two part acrylic composition is also described. The composition is particularly useful in a syringe or caulking gun having at least two barrels.

Abstract: A multi-part acrylic cold curing composition for metallography moulds to produce a metallography mount is described. The composition has a storage stable solid part and a storage stable liquid part. The parts are operable to form a mixture which polymerises to a solid mass upon mixing of the parts together. The solid part comprises polymer powder and initiator and the liquid part comprises acrylic monomer and optionally activator or accelerator. The initiator is present in an amount effective to polymerize the acrylic monomer component upon being mixed with the liquid part. The composition comprises a cyclic ester side group containing monofunctional acrylic monomer. The composition liquid part may contain a mixture of monofunctional monomer(s) and polyfunctional monomer(s), wherein the polyfunctional monomers comprise between 12 and 22% w/w of the total monomers in the uncured composition. Metallography mounts and processes for producing the mounts are also described.

Abstract: A hardenable multi-part acrylic composition comprises a solid first part and a storage stable liquid second part and optionally, further solid and/or liquid parts, the parts being operable to form a cement which hardens to a solid mass upon mixing. The composition further comprises an acrylic monomer component in the second part, an initiator component, a first sub-population of acrylic polymer particles in the first and/or further parts, a second sub-population of acrylic polymer particles in the first and/or further parts and optionally, one or more further sub-population(s) of acrylic polymer particles, and a radiopacifying filler. The initiator component amount is effective to polymerize the acrylic monomer component upon mixing. At least some of the radiopacifying filler is encapsulated within and/or adsorbed on the first sub-population of acrylic polymer particles and the second sub-population of acrylic polymer particles has a lower average particle size than the first.

Abstract: The invention relates to a hardenable multi-part liquid acrylic composition. The composition comprises a storage stable liquid first part, a storage stable liquid second part and optionally, a third or further liquid parts. The parts are operable to form a cement which hardens to a solid upon mixing of the parts together. The composition comprises an acrylic monomer component, an initiator component,acrylic polymer particles and a radiopacifying filler. The initiator component is present in an amount of effective topolymerize the acrylic monomer component upon being mixed and/or activated therewith. At least some of the radiopacifying filler is encapsulated within and/or adsorbed on the acrylic polymer particles in a liquid part.

Abstract: The present invention provides a moisture-reactive hot melt adhesive composition. The composition comprises: (a) urethane prepolymer, derived from at least one polyol and at least one polyisocyanate, and having free isocyanate groups effective to cure the composition in the presence of moisture; and (b) acrylic(co)polymer, wherein the acrylic (co)polymer comprises one or more residues of an (alk)acrylate (co)monomer of formula (I) wherein the group R contains at least one cyclic, tertiary or quaternary carbon, R is attached to the group —C(O)O— via a cyclic or tertiary carbon atom and wherein R? is a hydrogen or an alkyl group. The invention extends to use of an acrylic (co)polymer in a moisture reactive hot melt adhesive composition as a stringing reducing agent; a substrate comprising the moisture reactive hot melt adhesive composition; and a method of bonding materials together with the composition.

Abstract: A hardenable two part acrylic composition is described for the treatment of human or animal bone is described. The composition comprises a storage stable liquid first part and a storage stable liquid second part which react with each other upon mixing to form a cement which hardens. The composition further comprises an acrylic monomer component and an initiator component in an amount effective to polymerize the monomer component. The monomer component and the initiator component are generally located in separate parts of the two part composition so that the monomer component is storage stable. The liquid first part comprises emulsion polymerized acrylic polymer particles in a liquid carrier. A method of producing a hardenable two part acrylic composition is also described. The composition is particularly useful in a syringe or caulking gun having at least two barrels.

Abstract: A hardenable two part acrylic composition, a polymer component of the two part hardenable composition and a method of producing a polymer component of the two part composition are disclosed. The hardenable two part acrylic composition includes an acrylic polymer composition first part and an acrylic monomer composition second part. The acrylic polymer composition first part includes a first type of acrylic polymer particles wherein each first type of acrylic polymer particle is formed of a network of coalesced emulsion polymerized acrylic microparticles or is macroporous. The acrylic polymer composition may include emulsion polymerised acrylic polymer particles of particle size between 10 and 2000 nm and includes the use of acrylic polymer particles formed of a network of coalesced emulsion polymerized acrylic microparticles as a dough time reduction agent in a hardenable two part acrylic composition.

Abstract: A hardenable two part acrylic composition, a polymer component of the two part hardenable composition and a method of producing a polymer component of the two part composition are disclosed. The hardenable two part acrylic composition includes an acrylic polymer composition first part and an acrylic monomer composition second part. The acrylic polymer composition first part includes a first type of acrylic polymer particles wherein each first type of acrylic polymer particle is formed of a network of coalesced emulsion polymerized acrylic microparticles or is microporous. The acrylic polymer composition may include emulsion polymerised acrylic polymer particles of particle size between 10 and 2000 nm and includes the use of acrylic polymer particles formed of a network of coalesced emulsion polymerized acrylic microparticles as a dough time reduction agent in a hardenable two part acrylic composition.