摘要:
The present invention provides a process for preparing polycarboxylic acid imidazolines of the general formula: ##STR1## wherein X is --Cl, --OH, --O--SO.sub.3 H, --O--PO.sub.3 H.sub.2, --O--CH.sub.2 --CH.sub.2 --COOH, --NH.sub.2, --NHalk or --N(alk).sub.2, alk being an alkyl radical containing up to 6 carbon atoms, n is a whole number of from 2 to 4, R is a C.sub.8 -C.sub.18 hydrocarbon radical which is straight-chained, branched, saturated or one to three times unsaturated, m is a whole number of from 2 to 5, R' is a hydrogen atom or a carboxyl group and R" is a hydrogen atom or a methyl radical. In the process, a compound of the formula ##STR2## in which R, X and n are as defined above, is condensed with about a 2- to 5-fold excess of acrylic acid, methacrylic acid, maleic acid or a mixture thereof.
摘要:
The present invention provides polycarboxylic acid imidazolines of the general formula: ##STR1## wherein X is --Cl, --OH, --O--SO.sub.3 H, --O--PO.sub.3 H.sub.2, --O--CH.sub.2 --CH.sub.2 --COOH, --NH.sub.2, --NHalk or --N(alk).sub.2, alk being an alkyl radical containing up to 6 carbon atoms, n is a whole number of from 2 to 4, R is a C.sub.8 -C.sub.18 hydrocarbon radical which is straight-chained, branched, saturated or one to three times unsaturated, m is a whole number of from 2 to 5, R' is a hydrogen atom or a carboxyl group and R" is a hydrogen atom or a methyl radical. The present invention also provides a process for the preparation of these compounds and cleaning agents containing them.
摘要:
A thermo-responsive hydrogel, including a biocompatible monomer and/or polymer having an amino acid side chain. The hydrogel is thermo-responsive at a physiological temperature, and can include, incorporate, or encapsulate a treatment agent, such as a drug composition, a biomolecule, and/or a nanoparticle. The hydrogel is useful in delivering the treatment agent. The hydrogel is in a first physicochemical state for administration to a mammal. The hydrogel is thermo-responsive at a physiological temperature of the mammal, and changes to a second physicochemical state that is more solid than the first physicochemical state. In the second physicochemical state the thermo-responsive hydrogel releases the treatment agent.
摘要:
The present invention relates to formulations adapted from the original AREDS formula that are suitable for introduction into a measured amount or volume of a food as well as to foods containing these formulations. These fortified foods are expected to provide patients afflicted with or at risk for developing macular degeneration or other age-related deficiencies with alternative and more palatable sources of the ingredients of the original AREDS formula than those currently available in the market.
摘要:
The invention relates to highly biocompatible or biophilic un-cross-linked or cross-linked polymers comprising one or more side-chain active acrylic amino acids of formula I wherein: X is —NH(CH2)4—, —O—C6H4—CH2—, —OCH2—, —O—CH(CH3)—, —S—CH2—, —O-proline, and R is H or CH3; and wherein the polymer further includes a free radical initiator and, optionally, a cross-linking agent having a plurality of polymerizable ethylenically unsaturated groups. The invention further concerns various highly biocompatible, cross-linked co-polymers comprising one or more monomers of formula I, and one or more other polymerizable monomers. Uses of such polymers and co-polymers for the production of contact lenses, intraocular lenses, implants, wound healing slabs, additives for food and cosmetics, conductive plastics, spinnable fibers, and the like are disclosed.
摘要:
The invention relates to highly biocompatible or biophilic un-cross-linked or cross-linked polymers comprising one or more side-chain active acrylic amino acids of formula I. The invention further concerns various highly biocompatible, cross-linked co-polymers comprising one or more monomers of formula I, and one or more other polymerizable monomers. Uses of such polymers and co-polymers for the production of contact lenses, intraocular lenses, implants, wound healing slabs, additives for food and cosmetics, conductive plastics, spinnable fibers, and the like are disclosed.
摘要:
The invention relates to highly biocompatible or biophilic un-cross-linked or cross-linked polymers comprising one or more side-chain active acrylic amino acids of formula I wherein: X is —NH(CH2)4—, —O—C6H4—CH2—, —OCH2—, —O—CH(CH3)—, —S—CH2—, —O-proline, and R is H or CH3; and wherein the polymer further includes a free radical initiator and, optionally, a cross-linking agent having a plurality of polymerizable ethylenically unsaturated groups. The invention further concerns various highly biocompatible, cross-linked co-polymers comprising one or more monomers of formula I, and one or more other polymerizable monomers. Uses of such polymers and co-polymers for the production of contact lenses, intraocular lenses, implants, wound healing slabs, additives for food and cosmetics, conductive plastics, spinnable fibers, and the like are disclosed.
摘要:
A thermo-responsive hydrogel, including a biocompatible monomer and/or polymer having a side chain-linked amino acid. The hydrogel is thermo-responsive at a physiological temperature, and can include, incorporate, or encapsulate a treatment agent, such as a drug composition, a biomolecule, and/or a nano-particle. The hydrogel is useful in delivering the treatment agent. The hydrogel is in a first physicochemical state for administration to a mammal. The hydrogel is thermo-responsive at a physiological temperature of the mammal, and changes to a second physicochemical state that is more solid than the first physicochemical state. In the second physicochemical state the thermo-responsive hydrogel releases the treatment agent.
摘要:
The subject invention relates to a method of preparing a biocompatible polymer comprising epsilon-linked L-lysine having free alpha-amino and carboxy functions. The invention further encompasses the resulting biocompatible polymer and articles made from the polymer, in particular contact and intraocular lenses.
摘要:
The invention relates to highly biocompatible or biophilic un-cross-linked or cross-linked polymers comprising one or more side-chain active acrylic amino acids of formula I. The invention further concerns various highly biocompatible, cross-linked co-polymers comprising one or more monomers of formula I, and one or more other polymerizable monomers. Uses of such polymers and co-polymers for the production of contact lenses, intraocular lenses, implants, wound healing slabs, additives for food and cosmetics, conductive plastics, spinnable fibers, and the like are disclosed.