|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||210/747 ; 210/749 ; 210/764|
|발명자 / 주소|
|인용정보||피인용 횟수 : 5 인용 특허 : 1|
There is disclosed, in one aspect, a method for treating the upper layer of a body of water to effect a chemical and/or physical change within this upper layer. This method comprises placing a composition comprising an expanded silicate aggregate, such as a boron-containing silicate aggregate, which is impregnated with at least one treating agent such as a herbicide, onto the surface of a body of water, such as a lake, and allowing the composition to float upon the surface for a sufficient period of time to effect the chemical and/or physical change. In ...
A method for treating the upper layer of a body of water to effect a chemical change within said upper layer, comprising placing a composition comprising an expanded silicate aggregate which is impregnated with up to about 95% by weight of the total composition of at least one chemical water treating agent onto the surface of said body, and allowing said composition to float upon said surface releasing said water treating agent until said water treating agent has diffused into said layer of water and affected said change by chemical reaction.