Biodegradable stability binding agent for a solid detergent

A method of forming a hydrate solid, the method comprising:

• mixing water in an amount of 2% to 10% by weight of the hydrate solid and a polysaccharide hybrid polymer composition in an amount from about 1% to about 20% by weight of the hydrate solid to form a liquid premix, wherein the polysaccharide hybrid polymer composition includes a hybrid polymer comprising a residue of at least one ethylenically unsaturated monomer with an end group containing a residue of a polysaccharide and a hybrid synthetic polymer derived from synthetic monomers and having an initiator fragment as a first end group and a second end group including a proton;
• adding the liquid premix to about 40% or greater of at least one anhydrous hydratable salt by weight of the hydrate solid to form a mixture;
• and
• forming the hydrate solid from the mixture, wherein the hydrate solid comprises about 0.5% or less phosphorus by weight of the hydrate solid.

A method of cleaning a substrate, the method comprising:

• mixing water with a solid composition to form a use solution, the solid composition comprising;
• a polysaccharide hybrid polymer composition present in an amount from about 1% to about 20% by weight of the solid composition, the polysaccharide hybrid polymer composition comprising:
• a hybrid polymer of at least one ethylenically unsaturated monomer with an end group containing a residue of a polysaccharide, the residue of the polysaccharide present in an amount from about 5% to about 90% by weight of the polysaccharide hybrid polymer composition and the residue of the at least one ethylenically unsaturated monomer present in an amount from about 10% to about 75% by weight of the polysaccharide hybrid polymer composition;
• and
• a hybrid synthetic polymer derived from at least one synthetic monomer and having an initiator fragment as a first end group and a second end group including a proton;
• an anhydrous hydratable salt present in an amount of about 40% or greater by weight of the solid composition;
• water present in an amount of about 2% to about 10% by weight of the solid composition;
• and
• phosphorous present in an amount from 0% to 0.5% by weight of the solid composition;
• and
• contacting the substrate with the use solution.