GB1502441A - Biologically-active materials - Google Patents

Biologically-active materials

Info

Publication number
GB1502441A
GB1502441A GB219175A GB219175A GB1502441A GB 1502441 A GB1502441 A GB 1502441A GB 219175 A GB219175 A GB 219175A GB 219175 A GB219175 A GB 219175A GB 1502441 A GB1502441 A GB 1502441A
Authority
GB
United Kingdom
Prior art keywords
environment
active material
biologically active
preparation
exposed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB219175A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Washington
Original Assignee
University of Washington
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Washington filed Critical University of Washington
Publication of GB1502441A publication Critical patent/GB1502441A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10—Macromolecular compounds

Abstract

A preparation for the controlled release of an effective amount of a biologically active material to the environment is composed of an intimate mixture of an organic polymer and a biologically active material, for example a pesticide; the mixture releases the biologically active material to the environment by molecular diffusion through the polymer matrix at the surfaces exposed to the environment, and the polymer contains a sufficient amount of the biologically active material that, when the preparation is exposed to the environment, the biologically active material diffuses into the environment and the polymer subsequently loses its structural integrity at the surfaces which are exposed to the environment; this causes fresh surfaces of the preparation to be exposed to the environment, and an effective amount of more biologically active material is released over a substantial period. The preparation is particularly suitable for the long-term supply of effective amounts of pesticide to crop plants. Fig. 1 shows the release rate of the active substance in a preparation according to the invention (Graph b) and of a known preparation (Graph a). <IMAGE>
GB219175A 1974-01-17 1975-01-17 Biologically-active materials Expired GB1502441A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43408374A 1974-01-17 1974-01-17

Publications (1)

Publication Number Publication Date
GB1502441A true GB1502441A (en) 1978-03-01

Family

ID=23722753

Family Applications (1)

Application Number Title Priority Date Filing Date
GB219175A Expired GB1502441A (en) 1974-01-17 1975-01-17 Biologically-active materials

Country Status (4)

Country Link
JP (1) JPS50126838A (en)
CH (1) CH611132A5 (en)
DE (1) DE2501808A1 (en)
GB (1) GB1502441A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082655A (en) * 1984-07-23 1992-01-21 Zetachron, Inc. Pharmaceutical composition for drugs subject to supercooling

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4086297A (en) * 1975-11-28 1978-04-25 Ventron Corporation Method of making polymeric compositions and compositions therefor
LU81543A1 (en) * 1979-07-23 1981-03-24 Airwick Ag CONTROLLED DIFFUSION SYSTEMIC INSECTICIDE COMPOSITIONS
HU181665B (en) * 1979-11-28 1983-10-28 Chinoin Gyogyszer Es Vegyeszet Plant protective composition containing carbofurane with increased growth promoting and insecticide effect
DE3218150C2 (en) * 1982-05-14 1986-09-25 Akzo Gmbh, 5600 Wuppertal Active substance-containing body for long-term release and process for its production
DE3571117D1 (en) * 1984-07-16 1989-07-27 Ciba Geigy Ag Biocidal composition
US4629621A (en) * 1984-07-23 1986-12-16 Zetachron, Inc. Erodible matrix for sustained release bioactive composition
JPS6429442A (en) * 1987-07-24 1989-01-31 Toyo Tire & Rubber Co Insect-repellent phenolic resin foam
DE3903247A1 (en) * 1989-02-03 1990-08-09 Shell Int Research FUNGICIDIC COMPOSITION, METHOD FOR THEIR PRODUCTION AND THEIR USE, IN PARTICULAR FOR THE HEALING TREATMENT OF PLANTS Suffering from Fungus Diseases

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA846785A (en) * 1970-07-14 G. Allan George Controlled release pesticides
US326900A (en) * 1885-09-22 Spinning-machine
US3076744A (en) * 1961-03-21 1963-02-05 Plant Products Corp Acid-polymerized aminoplast resin insecticidal bait composition
BE618972A (en) * 1961-06-16
GB1051985A (en) * 1963-02-11 1900-01-01
US3343941A (en) * 1963-04-24 1967-09-26 Nalco Chemical Co Alkyd resins with herbicidal properties
GB1257377A (en) * 1969-05-29 1971-12-15
GB1385485A (en) * 1971-04-23 1975-02-26 Fisons Ltd Fungicidal composition
JPS49125521A (en) * 1973-04-09 1974-12-02
DE2422321C2 (en) * 1973-06-15 1983-11-24 Ogawa & Co., Ltd., Osaka Sublimables for agriculture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082655A (en) * 1984-07-23 1992-01-21 Zetachron, Inc. Pharmaceutical composition for drugs subject to supercooling

Also Published As

Publication number Publication date
CH611132A5 (en) 1979-05-31
JPS50126838A (en) 1975-10-06
DE2501808A1 (en) 1975-07-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee