The present invention is directed towards a process for making a powder or granule containing (A) at least one alkali metal salt of citric acid, and at least one additive selected from (B) at least one (co)polymer containing carboxylic acid groups, partially neutralized with alkali, in a weight ratio of (A):(B) of from 5:1 up to 100:1, wherein said powder or granule contains at least 75% by weight of citrate (A), said process comprising the steps of (a) mixing the at least one alkali metal salt of citric acid (A) and the at least one (co)polymer (B) in the presence of water, (b) removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of at least 125° C.

Disclosed herein is a solid surfactant composition including at least one polymer P1) that includes polymerized units of at least one monomer A), selected from the group consisting of α, β-ethylenically unsaturated carboxylic acids, salts of α,β-ethylenically un-saturated carboxylic acids, α, β-ethylenically unsaturated carboxylic acid anhydrides and mixtures thereof, and at least one nonionic surfactant of the general formula (I), characterized in that the solid surfactant composition has a glass transition temperature (Tg) of at least 50° C., determined by differential scanning calorimetry according to DIN EN ISO 11357-2, at a heating rate of 20 K/min. Additionally disclosed herein is a method of using the solid surfactant composition in a cleaning formulation.

A solution for treating contact lens is provided. The solution includes about 0.01-1.0 parts by weight (pbw) of a polymer having phosphorylcholine groups, about 0.01-1 pbw of an inorganic salt, and about 100 pbw of water. The polymer has a number-average molecular weight of about 4,000 to about 1,000,000 daltons and has a structure of formula (I):

##STR00001##

wherein, in formula (I), m is a positive integer, n is zero or a positive integer, and R is C.sub.2-C.sub.12 alkyl group or C.sub.2-C.sub.12 hydroxyalkyl group. When n is a positive integer, m/n is greater than 1.

A solution for treating a contact lens and a contact lens packaging system are provided. The solution includes about 0.01 to about 1.0 parts by weight (pbw) of a polymer having phosphorylcholine groups, about 0.005 to about 0.05 pbw of a hydrophilic molecule, about 0.01 to about 1.0 pbw of an inorganic salt, and about 100 pbw of water. A number-average molecular weight of the polymer is about 4,000 to about 1,000,000 daltons. The polymer has a structure of formula (I):

##STR00001##

wherein, in formula (I), m is a positive integer, n is zero or a positive integer, and R is C.sub.2-C.sub.12 alkyl group, or C.sub.2-C.sub.12 hydroxyalkyl group. When n is a positive integer, m/n is greater than 1. Moreover, a number-average molecular weight of the hydrophilic molecule is about 10,000 to about 5,000,000 daltons. The hydrophilic molecule is hyaluronic acid (HA) or hyaluronate salt.

The present invention relates to treatment compositions containing polymer systems that provide stability and benefit agent deposition as well as methods of making and using same. Such treatment compositions may be used for example as through the wash and/or through the rinse fabric enhancers as well as unit dose treatment compositions.

The invention relates to polyfunctional polymers suitable in particular for the treatment of metal surfaces (metal finishing) and comprising: monomer units u1 bearing phosphonic acid functions; monomer units u2 bearing amine functions; and optionally monomer units u3 bearing alcohol units —OH.

The invention describes to compositions useful to stabilize peracetic acid, acetic acid and hydrogen peroxide compositions with polymeric phosphonic acid resins or with 1-hydroxyethylidene-1,1,-diphosphonic acid associated with the interior surface of a container to stabilize the peracetic acid, acetic and hydrogen peroxide compositions.

The present invention is a contact lens treatment solution containing the following copolymer A and copolymer B in a ratio of A/B=40/1 to 5/1 (by weight). According to the present invention, there can be provided a contact lens treatment solution capable of removing dirt having adhered to contact lens surfaces, capable of improving lubricity of contact lens surfaces and capable of imparting persisting hydrophilicity to contact lens surfaces, by simple immersion treatment.

Copolymer A: a copolymer obtained by copolymerization of a monomer (a) represented by formula (1) and a monomer (b) represented by formula (2), in which the copolymerization ratio of the monomer (a) to the monomer (b), a/b=7/3 to 9/1 (by mol), and having a weight-average molecular weight of 400,000 to 800,000.
Copolymer B: a copolymer obtained by copolymerization of a monomer (a) represented by the formula (1) and a monomer (b) represented by the formula (2), in which the copolymerization ratio of the monomer (a) to the monomer (b), a/b=2/1 to 8/1 (by mol), and having a weight-average molecular weight of 1,000,000 to 1,500,000.

Provided is a treating solution for soft contact lenses capable of imparting hydrophilicity and sustainability thereof to a soft contact lens surface. It has been found that a treating solution for soft contact lenses containing a copolymer that contains two kinds of monomers different from each other as constituent units at a specific ratio, and that has a specific weight-average molecular weight can impart excellent hydrophilicity and sustainability thereof.

The present invention is a contact lens treatment solution containing the following copolymer A and copolymer B in a ratio of A/B=40/1 to 5/1 (by weight). According to the present invention, there can be provided a contact lens treatment solution capable of removing dirt having adhered to contact lens surfaces, capable of improving lubricity of contact lens surfaces and capable of imparting persisting hydrophilicity to contact lens surfaces, by simple immersion treatment. Copolymer A: a copolymer obtained by copolymerization of a monomer (a) represented by formula (1) and a monomer (b) represented by formula (2), in which the copolymerization ratio of the monomer (a) to the monomer (b), a/b=7/3 to 9/1 (by mol), and having a weight-average molecular weight of 400,000 to 800,000.
Copolymer B: a copolymer obtained by copolymerization of a monomer (a) represented by the formula (1) and a monomer (b) represented by the formula (2), in which the copolymerization ratio of the monomer (a) to the monomer (b), a/b=2/1 to 8/1 (by mol), and having a weight-average molecular weight of 1,000,000 to 1,500,000.