Abstract:
The present invention relates to anaerobically curable compositions made from renewable materials. In particular, an alpha-methylene-lactone is used with a (meth)acrylate component and a cure system to form an anaerobically curable composition.
Abstract:
The present application provides a process for the preparation of α-methylene-γ-butyrolactone, said process comprising the steps of: a) acetylating the C1-hydroxyl group of isoprenol to yield isoprenyl acetate; b) forming 4-acetoxy-2-methylene-butan-1-ol from said isoprenyl acetate by whole cell biotransformation, said step comprising: i) contacting a cell (CB) with a culture medium containing said isoprenyl acetate or with a culture medium contiguous with an organic phase containing said isoprenyl acetate under conditions that enable the cell to form 4-acetoxy-2-methylene-butan-1-ol from isoprenyl acetate; and, ii) optionally isolating the resultant 4-acetoxy-2-methylene-butan-1-ol, wherein said cell (CB) exhibits activity of at least one alkane monooxygenase enzyme which catalyzes the formation of 4-acetoxy-2-methylene-butan-1-ol from isoprenyl acetate; c) oxidizing said 4-acetoxy-2-methylene-butan-1-ol to yield 4-acetoxy-2-methylene butyric acid; and, d) converting said 4-acetoxy-2-methylene butyric acid to α-methylene-γ-butyrolactone by hydroxylysis to γ-hydroxy-α-methylenebutyric acid and subsequent cyclization of said γ-hydroxy-α-methylenebutyric acid.
Abstract:
The present invention relates to oral and dental care and cleaning agents comprising an aqueous dispersion of a phosphate-containing and/or phosphonate-containing polyurethane polymer and anionic surfactant(s), to tooth cleaning methods using these agents, and to the use of oral and dental care and cleaning agents comprising an aqueous dispersion of a phosphate-containing and/or phosphonate-containing polyurethane polymer and anionic surfactant(s) to reduce the restaining of teeth and/or to reduce biofilm development on dental surfaces and/or to reduce the adhesion of bacteria to dental surfaces and/or to extend the antibacterial action of antibacterial substances.
Abstract:
The present invention relates to peptides, in particular dodecapeptide-containing coating agents, adhesion promoters or adhesives for oxidic surfaces, a multilayer composite or a coated substrate, containing compounds which are formed entirely or in part of dodecapeptides as adhesion promoters between at least two adjacent layers of the composite or between the coating and the substrate, and to dodecapeptides that can be used as coating agents, adhesion promoters or adhesives for oxidic surfaces.
Abstract:
The present invention relates to peptides, in particular dodecapeptide-containing coating agents, adhesion promoters or adhesives for oxidic surfaces, a multilayer composite or a coated substrate, containing compounds which are formed entirely or in part of dodecapeptides as adhesion promoters between at least two adjacent layers of the composite or between the coating and the substrate, and to dodecapeptides that can be used as coating agents, adhesion promoters or adhesives for oxidic surfaces.
Abstract:
The present invention relates to a mini-emulsion which comprises at least one hydrolase, where the continuous phase of the mini-emulsion contains at least one oxidant, while the dispersed phase comprises at least one C6-60 carboxylic acid and optionally at least one reactant. Furthermore, the present invention relates to a method of preparing the mini-emulsion and to a process for the preparation of C6-60 percarboxylic acids and to a process for the preparation of an oxidized reactant, in each case using the abovementioned mini-emulsions.
Abstract:
The present application is directed to a polythiol compound having the general Formula VI, wherein: m is an integer of from 4 to 600; n is an integer of from 4 to 400; R1 is a C1-C18 alkylene group, C2-C18 oxyalkylene group, C2-C18 thioalkylene group, C6-C18 arylene or C7-C18 aralkylene group; and, R2 is H or methyl.
Abstract:
The invention relates to a method for producing radiation-curable alkenyl ether polyols, to radiation-curable alkenyl ether polyols produced using the method according to the invention, and to the use thereof for the synthesis of radiation-interlinkable oligomers or polymers by means of polyaddition reactions or polycondensation reactions, in particular for the synthesis of radiation-curable polyesters, polyethers, polyurethanes and polyureas, particularly preferably UV-curable polyurethanes. The invention also relates to radiation-curable polyurethane polymers that are obtained by reacting at least one alkenyl ether polyol according to the invention with a polyisocyanate.
Abstract:
The invention relates to a method for producing polymers, particularly polyhydroxyurethanes (PHU) from alkenyl ether polyols or pre-polymers that contain monomer units derived from such alkenyl ether polyols, and polythiol compounds, as well as to a method for crosslinking compounds containing alkenyl ether groups, with polythiol compounds. The invention also relates to the polymers and crosslinked polymers that can be obtained using the method according to the invention.
Abstract:
The present application is directed to a polythiol compound obtainable from at least one of serine (Ser) and tyrosine (Tyr) and having the general Formula VIA, VIB or VIC, wherein: R1 is a C1-C18 alkylene group, C2-C18 oxyalkylene group, C2-C18 thioalkylene group, C6-C18 arylene or C7-C18 aralkylene group; and, R2 is H or methyl.