Layered sodium disilicates (Na_2Si_2O_5) have good ion binding capacity, provide appropriate water alkalinity; and may cooperate with other composition in good method, They were considered as excellent non-phosphate detergent builder and have good prospect for substitut.

Study on the Stability of SKS-6;

Preparation of pillared derivatives from δ layered sodium disilicate

δ layered sodium disilicate(δ-Na_2Si_2O_5)was considered as efficient non-phosphate deter- gent builder with excellent detergency effect.

Layered Sodium Silicate was modified using oleic acid as modifier with Orthogonal Test Design and the optimal modifying condition was found.

The paper gives a review on the use of sodium tripolyphosphate(STPP) and eutrophication,and the evolution of detergent builders from STPP to zeolite 4A,and most recently to layered sodium silicate.

Delta phase layered sodium silicate was modified by using oleic acid as modifier.

The problem from sodium tripolyphosphate,4A zeolite,sodium metasilicate and phosphorous prohibition was summarized and the various performances and effect of δ-layered crystal disodium silicate as detergent were analyzed.

A method of new type phosphate-free detergent builder-crystalline layered sodium disilicate with sodium sulfate producing water glass was studied,and the effects of impurities to quality in the raw material were explored.