Water soluble polymeric compositions

A composition that comprises a blend of first and second water-soluble materials in a weight ratio 10:1 to :20 and in which

• the first material is a water-soluble polymer selected from polymer types of the group (1a) polymers of dialkylaminoalkyl (meth) acrylates, (1b) polymers of dialkylaminoalkyl (meth) acrylamides, and (1c) polymers of diallyldialkyl ammonium halides, and
• the second material is a water-soluble material that is selected from cationic polymers of a polymer type different from the polymer type of the first material and selected from polymer types of the group (2a) polymers of dialkylaminoalkyl (meth) acrylates, (2b) polymers of dialkylaminoalkyl (meth) acrylamides, (2c) polymers of diallyldiakyl ammonium halide, (2d) polymers formed from an amine and epihalohydrin or dihaloalkene, (2e) polyamides, and (2f) polyethylene immines, and
• the composition is a bulk aqueous concentrate having a combined concentration of the first and second materials of above 10% by weight and in which an aqueous solution of the said first and second materials in the concentrations in the concentrate and obtained by mixing the materials exhibits incompatibility selected from phase separation and crystallization, and
• the composition is a stable homogeneous composition free of materials added to promote compatibility and has been made by a process comprising forming the first material by polymerization from its monomeric starting material in an aqueous solution of the second material.

A method of making a composition that comprises a homogeneous blend of first and second water-soluble materials in a weight ratio 10:1 to 1:20 and in which

• the first material is a water-soluble polymer selected from polymer types of the group (1a) polymers of dialkylaminoalkyl (meth) acrylates, (1b) polymers of dialkylaminoalkyl (meth) acrylamides, (1c) polymers of diallyldialkyl ammonium halides and (1d) polymers formed between an amine and epihalohydrin or dihaloalkene, and
• the second material is a water-soluble material that is selected from cationic polymers of a polymer type different from the polymer type of the first material and selected from polymer types of the group (2a) polymers of dialkylaminoalkyl (meth) acrylates, (2b) polymers of dialkylaminoalkyl (meth) acrylamides, (2c) polymers of diallyldialkyl ammonium halide, (2d) polymers formed from an amine and epihalohydrin or dihaloalkene, (2e) polyamides, and (2f) polyethylene imines and
• the composition is a bulk aqueous concentrate having a combined concentration of the first and second materials of above 10% by weight and in which an aqueous solution of the said first and second materials in the concentrations in the concentrate and obtained by mixing the materials exhibits incompatibility selected from phase separation and crystallization, and the composition is a stable homogeneous composition free of materials added to promote compatibility, and
• in which the method comprises forming an aqueous solution of the second material and then forming the first material by polymerization from its monomeric starting material in the aqueous solution of second material.