摘要:
A new polymer, the feed monomers and molar percents of which, exclusive of a polymerization initiator and crosslinker, are:A.(I) 42 mole % to 58 mole % of a siloxy silane of formula I,(II) 42 mole % to 58 mole % of an unsubstituted alkyl (meth)acrylate of formula II,(III) 0 to 5 mole % of a Group A monomer, and(IV) 0 to 16 mole % of an additional vinylic copolymerizable monomer;B.(I) 42 mole % to 58 mole % of a siloxy silane of formula I,(II) 21 mole % up to less than 42 mole % of an unsubstituted alkyl (meth)acrylate of formula II,(III) 0 to 5 mole % of a Group A monomer, and(IV) 0 to 29 mole % of an additional vinylic copolymerizable monomer, orC.(I) 16 mole % up to less than 42 mole % of a siloxy silane of formula I,(II) 42 mole % of 58 mole % of an unsubstituted alkyl (meth)acrylate of formula II,(III) 0 to 5 mole % of a Group A monomer, and(IV) 0 to 36 mole % of an additional vinylic copolymerizable monomer,where formula I is ##STR1## where formula II is ##STR2## where Group A is a vinylic acid or a (meth)acrylate as defined herein. Methods of manufacture of the polymer and the use thereof as a pressure adhesive, especially a transdermal and/or transmucosal delivery system pressure sensitive adhesive, are also claimed.
摘要:
A new polymer, the feed monomers and molar percents of which, exclusive of a polymerization initiator and crosslinker, are:A. (I) 42 mole % to 58 mole % of a siloxy silane of formula I,(II) 42 mole % to 58 mole % of an unsubstituted alkyl (meth)acrylate of formula II,(III) 0 to 5 mole % of a Group A monomer, and(IV) 0 to 16 mole % of an additional vinylic copolymerizable monomer;B. (I) 42 mole % to 58 mole % of a siloxy silane of formula I,(II) 21 mole % up to less than 42 mole % of an unsubstituted alkyl (meth)acrylate of formula II,(III) 0 to 5 mole % of a Group A monomer, and(IV) 0 to 29 mole % of an additional vinylic copolymerizable monomer; orC. (I) 16 mole % up to less than 42 mole % of a siloxy silane of formula I,(II) 42 mole % to 58 mole % of an unsubstituted alkyl (meth)acrylate of formula II,(III) 0 to 5 mole % of a Group A monomer, and(IV) 0 to 36 mole % of an additional vinylic copolymerizable monomer;where formula I is ##STR1## where formula II is ##STR2## in which R.sub.3 is hydrogen or methyl; and R.sub.4 is methyl or a linear or branched chain C.sub.2-10 alkyl which is unsubstituted;where Group A is (meth)acrylic acid, maleic acid, fumaric acid, itaconic acid, itaconic acid, cinnamic acid, crotonic acid, fumaric acid, maleic acid, 2-(methy)acroyloxyethyl sulfonic acid, 2-(meth)acrylamido-2-methylpropane sulfonic acid, vinyl sulfonic acid, p-styrene sulfonioc acid, allyl sulfonic acid or of formula III.
摘要:
The therapeutic efficacy of zymogen proteins for oral administration is improved by including in the formulation one or more excipients that optimize pH and other reaction conditions for rapid activation of the zymogen shortly after ingestion.
摘要:
Gastric retentive dosage forms for sustained release of acamprosate are described which may allow once- or twice-daily dosing for both acute and long-term treatment of a disorder including alcohol dependence, tinnitus, sleep apnea, Parkinson's disease, levodopa-induced dyskinesias in Parkinson's disease, Alzheimer's disease, Huntington's disease, Amyotrophic lateral sclerosis, Cortical spreading depression, migraine, schizophrenia, anxiety, tardive dyskinesia, spasticity, multiple sclerosis, various types pain, or binge eating. Methods of treatment using the dosage forms and methods of making the dosage forms are also described.
摘要:
Gastric retentive dosage forms for sustained release of acamprosate are described which may allow once- or twice-daily dosing for both acute and long-term treatment of a disorder including alcohol dependence, tinnitus, sleep apnea, Parkinson's disease, levodopa-induced dyskinesias in Parkinson's disease, Alzheimer's disease, Huntington's disease, Amyotrophic lateral sclerosis, Cortical spreading depression, migraine, schizophrenia, anxiety, tardive dyskinesia, spasticity, multiple sclerosis, various types pain, or binge eating. Methods of treatment using the dosage forms and methods of making the dosage forms are also described.
摘要:
Methods and devices are provided for measuring the concentration of target chemical analytes present in a biological system. Device configuration and/or measurement techniques are employed in order to reduce the effect of interfering species on sensor sensitivity. One important application of the invention involves a method and device for monitoring blood glucose values.
摘要:
The retention of oral drug dosage forms in the stomach is improved by using swellable dosage forms that are shaped in a manner that will prevent them from inadvertently passing through the pylorus as a result of being in a particular orientation. The planar projection of the shape is one that has two orthogonal axes of different lengths, the longer being short enough to permit easy swallowing prior to swelling while the shorter is long enough within one-half hour of swelling to prevent passage through the pylorus.
摘要:
A delivery mechanism and device for the passive periodic release of a drug or an active ingredient which avoids the need for external power sources and/or electronic controllers. By taking advantage of oscillating chemical systems, one can change the state, i.e. the pH, of a solution, a drug, enhancer or solubilizer resulting in oscillating the ability of an active ingredient to be delivered transdermally. The pH of a solution can be oscillated over a range of pH values from 2 to 10 by the reduction and oxidation (redox) reactions of salts, such as permanganates, iodates, sulfates, chlorates, or bromates. Upon activation, the delivery system conditions begin to oscillate and with it, the delivery of the active agent oscillates.
摘要:
A device useful for administration of pharmacologically-active substances transdermally, orally, or by means of subdermal implant includes an impermeable backing layer, a plasticized polyvinyl chloride layer, and an adhesive layer, wherein the plasticized polyvinyl chloride layer includes from about 20 up to about 70% by weight of a polyvinyl chloride resin, from about 20 up to about 70% by weight of a plasticizer, and from about 0.5 up to about 35% by weight of a pharmacologically-active substance such as isosorbide dinitrate, nicotine, clonidine, guanfacine, indomethacin, nitroglycerin, and prostaglandin and optionally excipients.