Seed coating composition used in low temperature situation

Application Number  00128984 Application Date  2000.08.24
Publication Number  1291432 Publication Date  2001.04.18
Priority Information   1999/8/25 US 09/382434  
Applicant(s) Name  National Starch and Chemical Investment Holding Corp.  
Inventor(s) Name  C. Puglis;J.J. Gus  
Patent Agency Code  72001 Patent Agent  wen hongyan
AbstractA seed coating composition for low temperature applications, said seed coating composition comprising at least one polymer having a Tg of -60 DEG C to 20 DEG C, provided that the Tg of the polymer is less than or equal to the seed surface temperature at the time of application. The seed coating compositions of the invention provide a matrix which entraps active ingredients and improves seedling survival by maintaining the active ingredient on the surface of the seed for a period of time. The seed coating also increases the safety of using an active ingredient by reducing operator exposure and environmental release. In addition, the seed coating composition is resistant to cracking and flaking even when the seed coating composition is applied at a temperature of less than 20 DEG C. Moreover, the seed coating composition improves the uniformity of seed size and shape which is advantageous to mechanical planting techniques.