Binder composition

Patent metadata

Field	Value
Publication number	US-10384976-B2
Application number	US-201515113324-A
Country	US
Kind code	B2
Filing date	Jan 12, 2015
Priority date	Jan 22, 2014
Publication date	Aug 20, 2019
Grant date	Aug 20, 2019

Abstract

Binder compositions comprising as essential components at least one dispersion polymer P having a glass transition temperature ≤20° C. and comprising ethyl acrylate in copolymerized form and also at least one mineral binder M exhibiting low VOC emission after curing.

First claim

The invention claimed is:

1. A binder composition, comprising:
a) at least one dispersion polymer P having a glass transition temperature ≤20° C; and
b) at least one mineral binder M in an amount such that it is ≥1 and ≤10 000 parts by weight per 100 parts by weight of dispersion polymer P,
wherein:
the dispersion polymer P comprises, in copolymerized form:
≥35 and ≤65 wt % of a monomer A consisting of ethyl acrylate;
>0 and ≤5 wt % of at least one monomer B comprising a monoethylenically unsaturated compound comprising at least one silicon-containing group, at least one epoxy group, or at least one carbonyl group;
>0 and ≤7 wt % of at least one monomer C comprising a monoethylenically unsaturated compound comprising at least one hydroxyalkyl group;
>0 and ≤5 wt % of at least one monomer D comprising at least one of a monoethylenically unsaturated C 3 to C 6 monocarboxylic, a C 4 -C 6 dicarboxylic acid, and a salt or anhydride thereof;
≥0 and ≤5 wt % of at least one monomer E comprising a compound having at least two nonconjugated ethylenically unsaturated groups;
≥15 and ≤45 wt % of at least one monomer F comprising an ethylenically unsaturated compound different from, but copolymerizable with, the monomers A to E, for which a homopolymer synthesized solely from this ethylenically unsaturated compound in copolymerized form would have a glass transition temperature of ≤30° C.; and
≥10 and ≤30 wt % of a monomer G comprising at least one ethylenically unsaturated compound different from, but copolymerizable with, the monomers A to E, for which a homopolymer synthesized solely from this ethylenically unsaturated compound in copolymerized form would have a glass transition temperature of ≥50° C. (monomers G),

the amounts of the monomers A to G adding up to 100 wt %; and
when a coating of the binder composition is formed on grease-free glass plate, said coating having a thickness of 3 mm and being 34 cm in length and 14 cm in width, and the coating is tested in a stainless steel test chamber in accordance with the requirements of DIN EN ISO 16000-9 with sampling and determination of volatile organic compounds (VOCs) being carried out in accordance with DIN EN ISO 16000-9. emissions of the volatile organic compounds (VOCs) from the coating satisfy the following requirements:
a total amount of all volatile organic compounds (TVOC) after 3 days of storage is less than 1,000 μg/m 3 ; and
a total amount of all volatile organic compounds (TVOC) after 28 days of storage is less than 100 μg/m 3 .

2. The binder composition according to claim 1 , wherein the dispersion polymer P comprises, in copolymerized form:
≥35 and ≤65 wt % of the monomer A consisting of the ethyl acrylate;
>0 and ≤5 wt % of the at least one monomer B comprising the monoethylenically unsaturated compound comprising at least one silicon-containing group, at least one epoxy group, or at least one carbonyl group;
>0 and ≤7 wt % of the at least one monomer C comprising the monoethylenically unsaturated compound comprising at least one hydroxyalkyl group;
>0 and ≤5 wt % of the at least one monomer D comprising at least one of the monoethylenically unsaturated C 3 to C 6 monocarboxylic, a C 4 -C 6 dicarboxylic acid, and a salt or anhydride thereof;
>0 and ≤5 wt % of the at least one monomer E comprising the compound having at least two nonconjugated ethylenically unsaturated groups;
≥15 and ≤45 wt % of the at least one monomer F comprising the ethylenically unsaturated compound different from, but copolymerizable with, the monomers A to E, for which a homopolymer synthesized solely from this ethylenically unsaturated compound in copolymerized form would have a glass transition temperature of ≤30° C.; and
≥10 and ≤30 wt % of the mononer G comprising the at least one ethylenically unsaturated compound different from, but copolymerizable with, the monomers A to E, for which a homopolymer synthesized solely from this ethylenically unsaturated compound in copolymerized form would have a glass transition temperature of ≥50° C.,
the amounts of the monomers A to G adding up to 100 wt %.

3. The binder composition according to claim 1 , wherein the dispersion polymer P has a glass transition temperature ≤5° C.

4. The binder composition according to claim 1 , wherein the monomer F is at least one monomer selected from the group consisting of methyl acrylate, isopropyl acrylate, n-butyl acrylate, sec-butyl acrylate, isohutyl acrylate, n-hexyl acrylate, n-hexyl methacrylate, n-octyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, 2-propylheptyl acrylate, isodecyl acrylate, n-dodecyl acrylate, n-dodecyl methacrylate, benzyl acrylate, and ethyldiglycol acrylate.

5. The binder composition according to claim 1 , wherein the monomer G is at least one monomer selected from the group consisting of methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, tert-butyl acrylate, tert-butyl methacrylate, phenyl methacrylate, cyclohexyl methacrylate, styrene, 3-methylstyrene, 4-methylstyrene, 2,4-dimethylstyrene, 2,5-dimethylstyrene, and 3,5-dimethylstyrene.

6. The binder composition according to claim 1 , wherein dispersion polymer P has a number-average particle diameter ≥100 and ≤500 nm.

7. The binder composition according to claim 1 , wherein dispersion polymer P comprises, in copolymerized form:
≥40 and ≤50 wt % of the ethyl acrylate,
≥1 and ≤3 wt % of glycidyl methacrylate,
≥2 and ≤5 wt % of 2-hydroxyethyl methacrylate,
≥0.1 and ≤2 wt % of acrylic acid,
≥25 and ≤30 wt % of 2-ethylhexyl acrylate, and
≥15 and ≤25 wt % of styrene.

8. The binder composition according to claim 1 , wherein mineral binder M comprises a cement.

9. The binder composition according to claim 1 , wherein mineral binder M comprises a mixture of a Portland cement and a high-alumina cement.

10. The binder composition according to claim 1 , further comprising water.

11. The binder composition according to claim 10 , wherein a weight ratio of the water to the mineral binder M is ≥0.1 and ≤10.

12. A method for coating a substrate, the method comprising:
applying the binder composition according to claim 10 to a surface of a substrate, and then
curing the applied binder composition to obtain a coating on the substrate.

13. A coated substrate obtained by the method according to claim 12 .

14. The method according to claim 12 , wherein the binder composition is applied with a dry film thickness ≥0.1 and ≤20 mm to the surface of the substrate.

15. The method according to claim 12 , wherein the substrate is concrete, screed, plaster, or plasterboard.

16. A method of making a waterproofing grout, the method comprising:
mixing the binder composition according to claim 10 into a mineral grout to obtain a mineral waterproofing grout.

17. A dispersion polymer P, comprising, in copolymerized form:
≥40 and ≤50 wt % of ethyl acrylate,
≥1 and ≤3 wt % of glycidyl methacrylate,
≥2 and ≤5 wt % of 2-hydroxyethyl methacrylate,
≥0.1 and ≤2 wt % of acrylic acid,
≥25 and ≤30 wt % of 2-ethylhexyl acrylate, and
≥15 and ≤25 wt % of styrene.

18. A method of making a waterproofing grout, the method comprising:
mixing the dispersion polymer P according to claim 17 into a mineral grout to obtain a mineral waterproofing grout.

Assignees

• Basf Se

Inventors

• Nieberle Joerg
• Emmerling Sebastian
• Goetz Thomas
• Moraru Bogdan

Classifications

• C04B2111/60

  Flooring materials · CPC title

• C04B2111/0062

  Gypsum-paper board like materials · CPC title

• C09D133/08

  Homopolymers or copolymers of acrylic acid esters · CPC title

• C09D5/02

  Emulsion paints {including aerosols} · CPC title

• C04B2111/70

  Grouts, e.g. injection mixtures for cables for prestressed concrete · CPC title