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: 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: 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: A polymerisable composition suitable for impregnating a permeable material, a process for the treatment of a permeable material, especially wood and an impregnated material is described. The composition includes at least 60% w/w composition of one or more polymerisable monomer(s) and an initiator effective to bulk polymerise the polymerisable monomers above 50° C. The composition includes up to 0.5% w/w tempo compound effective to stabilise the composition at temperatures less than 50° C. or below its thermally activated polymerisation temperature and to not substantially prevent polymerisation above the polymerisation temperature.