Abstract:
Disclosed herein are compositions and kits of materials for forming a component of a rigid lens. An exemplary composition comprises an isocyanate terminated and/or hydroxyl terminated pre-polymer; a polyol that is a monomeric polyol, or a propoxylate thereof, and/or a di-, tri-, or tetra- isocyanate functional monomer; and from 5 to 55 wt%, based on the total weight of the composition, of a derivative of cellulose. An exemplary kit of materials comprises a first component comprising one or more isocyanate-functional components and a second component comprising one or more hydroxyl-functional components. The compositions or kits may be useful in forming rigid lens components, particularly in rigid lenses comprising electronic components.
Abstract:
The present disclosure relates to the environmentally preparation of nanocellulose and derivatives thereof. The invention further relates to the preparation of cellulose derivatives.
Abstract:
Methods for regenerating an article for capturing carbon dioxide (CO 2 ) from a gas stream include removing a CO 2 capture sorbent from an adsorbent capture honeycomb. Removing the CO 2 capture sorbent from the capture article may include contacting the adsorbent honeycomb and a volume of fluid, wherein the fluid removes the sorbent from the honeycomb, and the honeycomb binder is insoluble in the fluid. Restoring the article may include contacting the honeycomb with a regeneration fluid to deposit a CO 2 capture sorbent on a surface of the honeycomb.
Abstract:
A self-integrating hydrogel includes a water-soluble polymer. The water-soluble polymer includes a repeating unit having at least one functional group that includes an oxygen atom, a sulfur atom, or a nitrogen atom, and a pendant chain covalently attached to the oxygen atom, the sulfur atom, or the nitrogen atom of the at least one functional group of the repeating unit. The pendant chain includes ureido-pyrimidinone.
Abstract:
An organic peroxide formulation includes at least one organic peroxide and at least one cellulose compound. Embodiments of the organic peroxide formulations significant improvements in surface tackiness (often including but not limited to tack-free surfaces) when curing elastomers in the presence of oxygen. Embodiments of the present invention relate to organic peroxide formulations that can cure solid elastomers in the full or partial presence of oxygen using, for example, a hot air oven or tunnel, molten salt bath, or steam autoclave. Embodiments of the invention also relate to crosslinkable elastomer compositions, processes for curing the elastomers, and products made by such processes.
Abstract:
An aqueous adhesive composition and a process for preparing such compositions are disclosed. The composition comprises macromolecular complex comprising (A) a first component comprising (i) a framework element and (ii) a polyphenol, and (B) second component comprising a polypeptide, oligopeptide, amino acid, or polyamine. The 5 framework element comprises (a) a polypeptide, oligopeptide, amino acid, or polyamine, (b) a polysaccharide, oligosaccharide, or monosaccharide, or a saccharide conjugate, or (c) a lignin, a lignan or a lignin conjugate. The polyphenol comprises a tannin, a tannic acid, a flavonoid, or a poly-resorcinol. An adhesive precursor composition comprising the first component is also disclosed.
Abstract:
The present invention relates to a method of conferring modified properties, e.g. modified physical and/or biochemical properties, to a metallic substrate surface, comprising at least two steps consisting in(i) a first step comprising at least exposing said substrate surface to a hetero-bifunctional anchoring molecule carrying at least a silane group and at least a A group,said A group being optionally introduced within said anchoring molecule via a preliminary functionalizing step, and (ii) a second step of exposing the substrate surface to a polymer carrying at least three groups A 2 capable of reacting with A in a thiol-ene reaction,the number average molecular weight of said polymer being greater than 1 000 g/mol.