Insecticidal evaporator having a diffusion layer of olefin polymerizate
US3961040A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1974 |
| Grant date | Jun 1, 1976 |
| Priority date | — |
| Expiry date | Mar 13, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N25/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An insecticidal evaporator is described which comprises PA1 I a liquid composition containing PA2 A. 40 to 90% by weight approximately calculated on the total weight of the composition of a volatile insecticidal ester of phosphoric acid the vapor pressure of which is at least 10.sup..sup.-3 Torr at 20.degree.C; PA2 b. at least one first additional organic liquid compound having a vapor pressure less than or equal to that of the volatile insecticidal ester; PA2 C. at least a second additional organic compound miscible or soluble in the mixture of the volatile insecticidal ester and of the first additional compound; PA1 Ii. a fibrous mass absorbent for the said composition I, and impregnated by the same; and PA1 Iii a diffusion layer covering at least a part of the surface of the said fibrous mass, the remainder of the surface of the fibrous mass being covered by an envelope impermeable to the said composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.