Various embodiments disclosed relate to a resin having a structure of at least one of Formula I and Formula II: In Formula I or Formula II R.sup.1, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 can each be independently selected from the group consisting of hydrogen and substituted or unsubstituted (C.sub.1-C.sub.10)alkyl. R.sup.2 is (C.sub.1-C.sub.10) alkylene. L is a substituted or unsubstituted (C.sub.1-C.sub.10)alkylene or (C.sub.3-C.sub.10)cycloalkylene. In Formula I or Formula II, n or m is greater than or equal to 0, and wherein the resin has an average molecular weight of less than 10,000 g/mol. ##STR00001##

Various embodiments disclosed relate to a resin having a structure of at least one of Formula I and Formula II: In Formula I or Formula II R.sup.1, R.sup.3, R.sup.4, R.sup.5, and R.sup.6 can each be independently selected from the group consisting of hydrogen and substituted or unsubstituted (C.sub.1-C.sub.10)alkyl. R.sup.2 is (C.sub.1-C.sub.10) alkylene. L is a substituted or unsubstituted (C.sub.1-C.sub.10)alkylene or (C.sub.3-C.sub.10)cycloalkylene. In Formula I or Formula II, n or m is greater than or equal to 0, and wherein the resin has an average molecular weight of less than 10,000 g/mol. ##STR00001##

A dental gypsum slurry includes water and a dental gypsum powder containing hemihydrate gypsum and a polycarboxylic acid salt-based water-reducing agent, wherein a powder-water ratio of the water to the dental gypsum powder is 0.24 to 0.50, and when the water and the dental gypsum powder being mixed are poured up to a height of 50 mm in a cylindrical mold having an inner diameter of 35 mm, which is vertically placed on a flat surface, and then, the cylindrical mold is pulled upward at 10 mm/s at 30 seconds after start of mixing so that a mixture spreads planarly, the diameter of the mixture is 141.4 mm or more.

A dental gypsum slurry includes water and a dental gypsum powder containing hemihydrate gypsum and a polycarboxylic acid salt-based water-reducing agent, wherein a powder-water ratio of the water to the dental gypsum powder is 0.24 to 0.50, and when the water and the dental gypsum powder being mixed are poured up to a height of 50 mm in a cylindrical mold having an inner diameter of 35 mm, which is vertically placed on a flat surface, and then, the cylindrical mold is pulled upward at 10 mm/s at 30 seconds after start of mixing so that a mixture spreads planarly, the diameter of the mixture is 141.4 mm or more.

Orthodontic articles and polymerizable resin compositions are described. The orthodontic article comprises a cured composition comprising the reaction product of free-radically polymerizable resin comprising 30 to 70 wt. %, inclusive, of at least one urethane component, and 25 to 70 wt. %, inclusive, of reactive diluent(s) comprising at least one monofunctional (meth)acrylate monomer. The polymerizable resin comprises no greater than 35 wt. % of reactive diluent(s) having a high affinity for water. Reactive diluent(s) such as monofunctional (meth)acrylate monomers having a high affinity for water have low log P values. In one embodiment, the polymerizable resin comprises at least one acidic monomer.

Orthodontic articles and polymerizable resin compositions are described. The orthodontic article comprises a cured composition comprising the reaction product of free-radically polymerizable resin comprising 30 to 70 wt. %, inclusive, of at least one urethane component, and 25 to 70 wt. %, inclusive, of reactive diluent(s) comprising at least one monofunctional (meth)acrylate monomer. The polymerizable resin comprises no greater than 35 wt. % of reactive diluent(s) having a high affinity for water. Reactive diluent(s) such as monofunctional (meth)acrylate monomers having a high affinity for water have low log P values. In one embodiment, the polymerizable resin comprises at least one acidic monomer.

Disclosed is an external wound dressing formed of a bioprotein scaffolding that may include a pressure-sensitive adhesive impregnated in the bioprotein scaffolding. A method of wound treatment can include adhering an external wound dressing formed of a bioprotein scaffolding to an external injury site. Another method can include applying an adhesive to the skin of a patient, placing an external wound dressing formed of a bioprotein scaffolding over an injury site on the skin of the patient, and applying a sealing adhesive on top of the bioprotein scaffolding. Yet another method can include applying an adhesive to the skin of a patient, placing an external wound dressing formed of a bioprotein scaffolding over an injury site on the skin of the patient that has not been stitched, and applying a sealing adhesive on top of the bioprotein scaffolding.

Disclosed is an external wound dressing formed of a bioprotein scaffolding that may include a pressure-sensitive adhesive impregnated in the bioprotein scaffolding. A method of wound treatment can include adhering an external wound dressing formed of a bioprotein scaffolding to an external injury site. Another method can include applying an adhesive to the skin of a patient, placing an external wound dressing formed of a bioprotein scaffolding over an injury site on the skin of the patient, and applying a sealing adhesive on top of the bioprotein scaffolding. Yet another method can include applying an adhesive to the skin of a patient, placing an external wound dressing formed of a bioprotein scaffolding over an injury site on the skin of the patient that has not been stitched, and applying a sealing adhesive on top of the bioprotein scaffolding.

The invention relates to acrylic copolymers and terpolymers incorporating high Tg, hydrophobic (meth)acrylates that have high thermal stability and excellent optical properties. These copolymers are optically clear, and provide a copolymer having a Tg of 115-140 C, along with sufficiently high molecular weight. The copolymer is found to exhibit high heat resistance, high light transmission, low haze, low moisture uptake, excellent environmental stability, excellent high temperature thermal stability, and excellent mechanical properties, along with excellent UV resistance. The copolymer, or terpolymer may be used to form lighting pipes, thin wall parts, optical lenses, extruded films, (co-)extruded sheets/profiles, thermo-formable sheets, cast sheets, composites, etc.

The invention relates to acrylic copolymers and terpolymers incorporating high Tg, hydrophobic (meth)acrylates that have high thermal stability and excellent optical properties. These copolymers are optically clear, and provide a copolymer having a Tg of 115-140 C, along with sufficiently high molecular weight. The copolymer is found to exhibit high heat resistance, high light transmission, low haze, low moisture uptake, excellent environmental stability, excellent high temperature thermal stability, and excellent mechanical properties, along with excellent UV resistance. The copolymer, or terpolymer may be used to form lighting pipes, thin wall parts, optical lenses, extruded films, (co-)extruded sheets/profiles, thermo-formable sheets, cast sheets, composites, etc.