Patent US4094970A successfully refreshed from Google Patents.
US4094970A
Expired / Lapsed
US
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Elastomeric polyurethane-based articles having an insecticidal depot gas action
Assignee: Bayer AG
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Filing: 1976-08-12
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Granted: 1978-06-13
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Expires: 1996-08-12
Abstract
Abstract In an insecticidal article comprising an insecticidally effective amount of at least one volatile phosphoric or thiophosphoric acid ester and a solid polyurethane carrier material, the improvement wherein said polyurethane is an elastomeric polyurethane, whereby the article retains its activity over a long period of time. The polyurethane is formed of a polyisocyanate and a mixture of a long chain polyol and a short chain polyol and/or polyamine.
Inventors
- 👤 Wolfgang Behrenz
- 👤 Dietmar Schapel
- 👤 Manfred Dahm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08K5/5398
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
A solid insecticidal article comprising an insecticidally effective amount of at least one volatile phosphoric or thiophosphoric acid ester and about 1 to 10 times its weight of a solid elastomeric polyurethane carrier material formed from a polyisocyanate and units of a long chain polyol having a molecular weight of about 1,000 to 10,000, and of at least one of a short chain polyol and/or polyamine having a molecular weight of about 62 to 1,000, the weight ratio of units of long chain polyol to units of short chain polyol plus polyamine ranging from about 1:1 to 9:1.
Claim 2
Dependent Claim
98 words
A solid insecticidal article comprising an insecticidally effective amount of at least one volatile phosphoric or thiophosphoric acid ester and about 1 to 10 times its weight of a solid elastomeric polyurethane carrier material formed from a polyisocyanate and units of a long chain polyol having a molecular weight of about 1,000 to 10,000, and of at least one of a short chain polyol and/or polyamine having a molecular weight of about 62 to 1,000, the weight ratio of units of long chain polyol to units of short chain polyol plus polyamine ranging from about 1:1 to 9:1.
Claim 3
Dependent Claim
19 words
An article as claimed in claim 1 in which the active ingredient is an O,O-dimethyl-O-(2,2-dichlorovinyl)-phosphoric or thiophosphoric acid ester.
Claim 4
Dependent Claim
24 words
An article as claimed in claim 1, in which the proportion, by weight, of active ingredient to elastomeric polyurethane is about 1:4 to 1:2.
Claim 5
Dependent Claim
18 words
An article as claimed in claim 3, in which the active ingredient is O,O-dimethyl-O-(2,2-dichlorovinyl)-phosphoric or thiophosphoric acid ester.
Claim 6
Dependent Claim
85 words
An article as claimed in claim 3, in which the active ingredient is an O,O-dimethyl-O-(2,2-dichlorovinyl)-phosphoric or thiophosphoric acid ester, the polyurethane formed from a polyisocyanate and units of a long chain polyol having a molecular weight of about 2,000 to 5,000, and of at least one of a short chain polyol and polyamine having a molecular weight of about 62 to 300, the weight ratio of units of long chain polyol to units of short chain polyol plus polyamine ranging from about 1.5:1 to 4:1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |