Patent ID: 9554577
Date: 2017-01-31
CPC Classifications: A01N

Claim:
1. A capsule suspension comprising; a formulation comprising: microencapsulated pendimethalin comprising a herbicidally effective amount of pendimethalin encapsulated within a polyurea polymeric wall; microcapsules encapsulating said pendimethalin, said microcapsules comprising polymeric wall of polyurea constituting from about 1% to about 20% by weight of the formulation; an aqueous phase comprising at least one alkali or alkaline earth metal salt of an organic acid selected from the group consisting of acetic acid, propionic acid, citric acid, fumaric acid, tartaric acid, succinic acid, valeric acid, malonic acid, glutaric acid, adipic acid and phthalic acid, wherein said at least one alkali or alkaline earth metal salt of an organic acid is present in an amount ranging from about 2% to about 55% by weight of the formulation; and a second herbicide, which may be co-microencapsulated with pendimethalin or it may be unencapsulated or it may be encapsulated separately and admixed with encapsulated pendimethalin; wherein said capsule suspension has reduced staining properties compared to a capsule suspension in which said alkali or alkaline earth metal salt of an organic acid is outside of said aqueous phase; and wherein said second herbicide displays delayed release and reduced free content in the presence of said encapsulated pendimethalin.