Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1987-11-19
1988-08-30
Page, Thurman K.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524257, C08J 534
Patent
active
047678089
ABSTRACT:
Described is an article of manufacture useful for administration of pharmacologically-active substances, transdermally, orally or by means of subdermal implant comprising a solid vinyl plastisol layer for contacting a patient's tissue, internally or externally, the layer containing from about 20 up to about 70% by weight of a polyvinyl chloride resin or a polyvinyl chloride-polyvinyl acetate copolymer containing a minor proportion of vinyl acetate; from about 20-70% plasticizer composition; from about 0.5 up to 35% of a pharmacologically-active substance such as isosorbide dinitrate, nicotine, clonidine, guanfacine, indomethacin, glyceryl trinitrate and prostaglandin and optionally excipients. Also described is the novel plasticizer-polyvinyl chloride composition of matter comprising 1-dodecylhexahydro-2H-azepin-2-one and polyvinyl chloride resin taken together with a pharmacologically-active substance wherein the 1-dodecylhexahydro-2H-azepin-2-one not only acts as a plasticizer but also acts as a penetration enhancer (through tissue) for the pharmacologically-active substance.
REFERENCES:
patent: 2548433 (1951-04-01), Klein et al.
patent: 2616868 (1952-11-01), Heisenberg et al.
patent: 3326839 (1967-06-01), Barnor et al.
Berner Bret
Kydonieus Agis
Shah Kishore R.
Hercon Laboratories Corporation
Horne L. R.
Liberman Arthur L.
Page Thurman K.
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