Potassium Polyacrylate [−CH₂−CH(CO₂K) −] _n is based on potassium salt of polyacrylic acid, mainly used as super absorbent polymer for plants, crops, and horticulture. This polymer works by absorbing water to up to 500 times of its own weight and works as a moisture retaining agent. On absorption, it forms water lumps that can hold water molecules for a longer period of time. The advantage of potassium over other salts is its water retention capacity as well as water releasing function with higher disintegration time.

Potassium Polyacrylate have cross-linking molecular structure with a hydrophilic group attached. This group is responsible to about 500-600 times of its own weight and forms water beads or crystals. When applied on agricultural field, it acts as a water reservoir for plants this polymer traps the water that comes to the field either through rain or irrigational canal. These trapped water gets released after a certain point over prolonged durations and comes as a relief for stakeholder when the conditions become dry. These polymers ensure soil improvement by absorbing vital nutrients, which are then utilized by plants for carrying out various physiological processes.