Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
234 words
An aqueous dispersion containing as binder at least one film-forming polymer comprising copolymerized units of from 48 to 60% by weight n-butyl acrylate; from 35 to 48% by weight styrene; from 4 to 6% by weight methacrylic acid or acrylic acid or a mixture thereof, and from 0 to 13% by weight N-methoxymethylmethacrylamide, the sum of the percentages by weight being 100, said polymer being in the form of larger, non-agglomerated, spherical particles or main spheres and smaller, non-agglomerated spherical particles or filler spheres, wherein the filler spheres have an average particle diameter d F measured using an electron microscope of from 50 to 150 nanometers and the average diameter of the main spheres d H is at least 140 mn--there are two pronounced, substantially non-overlapping peaks in the particle size distribution within the specified particle size ranges and the ratio of the total mass of the polymer composed of main spheres M H to the total mass of the polymer composed of filler spheres M F is M.sub.H :M.sub.F =20:1 to M.sub.H :M.sub.F =1:20 and wherein at least 70% of the number of main spheres and at least 70% of the number of filler spheres lie in the range of ±25% of the respective given average value of d H or d F and wherein, if the dispersion contains several differing polymers with respect to chemical and percentage composition, they are mutually compatible.
Claim 2
Dependent Claim
234 words
An aqueous dispersion containing as binder at least one film-forming polymer comprising copolymerized units of from 48 to 60% by weight n-butyl acrylate; from 35 to 48% by weight styrene; from 4 to 6% by weight methacrylic acid or acrylic acid or a mixture thereof, and from 0 to 13% by weight N-methoxymethylmethacrylamide, the sum of the percentages by weight being 100, said polymer being in the form of larger, non-agglomerated, spherical particles or main spheres and smaller, non-agglomerated spherical particles or filler spheres, wherein the filler spheres have an average particle diameter d F measured using an electron microscope of from 50 to 150 nanometers and the average diameter of the main spheres d H is at least 140 mn--there are two pronounced, substantially non-overlapping peaks in the particle size distribution within the specified particle size ranges and the ratio of the total mass of the polymer composed of main spheres M H to the total mass of the polymer composed of filler spheres M F is M.sub.H :M.sub.F =20:1 to M.sub.H :M.sub.F =1:20 and wherein at least 70% of the number of main spheres and at least 70% of the number of filler spheres lie in the range of ±25% of the respective given average value of d H or d F and wherein, if the dispersion contains several differing polymers with respect to chemical and percentage composition, they are mutually compatible.
Claim 3
Dependent Claim
50 words
An aqueous dispersion according to claim 1, wherein the average particle diameter d H is from 80 to 130 nm, the average diameter d F is from 1.8 to 3.5 times greater than d F and the total mass ratio M H to M F is from 1:10 to 2:1.
Claim 4
Dependent Claim
22 words
An aqueous dispersion according to claim 1, wherein the solids content of the film-forming polymer is from 37 to 55% by weight.
Claim 5
Dependent Claim
108 words
A method for the preparation of an aqueous dispersion according to claim 1, wherein a dispersion containing the polymer in the form of the larger, non-agglomerated spherical particles or main spheres is intimately distributed in a dispersion containing the polymer in the form of the smaller, non-agglomerated, spherical particles or filler spheres in the given mass ratio according to claim 1, wherein the pH of the total dispersion thus obtained is adjusted to a pH value of from 7 to 9 by addition of a non-ionogenic emulsifier in a quantity of from 0.5 to 3% by weight, based on polymer, and wherein the resulting total dispersion is stabilized.
Claim 6
Dependent Claim
11 words
An aqueous paint containing an aqueous dispersion according to claim 1.
Claim 7
Dependent Claim
20 words
A coating agent for plastics, metals, wood, glass, paper or cardboard articles containing an aqueous dispersion according to claim 1.
Claim 8
Dependent Claim
14 words
A road-marking paint containing an aqueous dispersion according to claim 1 as a binder.
Claim 9
Dependent Claim
17 words
Print dyes for textiles and leather containing an aqueous dispersion according to claim 1 as a binder.
Claim 10
Dependent Claim
23 words
Impregnation or compacting agents for paper, woven or non-woven textiles and leather containing an aqueous dispersion according to claim 1 as a binder.