Process and additive to improve adhesion of building compositions to substrates

Patent metadata

Field	Value
Publication number	US-10519064-B2
Application number	US-201615080083-A
Country	US
Kind code	B2
Filing date	Mar 24, 2016
Priority date	Dec 18, 2009
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

The present invention relates to the use of an additive as well as a process to improve the adhesion of a mortar to a building substrate, wherein the mortar is mixed with said additive and is applied to a building substrate selected from the group of polystyrene-containing substrates, polyolefin-containing substrates or polyvinyl chloride-containing substrates, the additive containing (i) a plasticizer that is liquid at 50° C. or lower, has a boiling point of 100° C. or higher, and that has a solubility parameter δ 25° C. between 22.5 MPa1/2 and MPa1/2; (ii) optionally, a filler that has a BET surface area of at least 40 m2/g; (iii) optionally, a biopolymer, (iv) optionally, a protective colloid; and (v) optionally, a water-insoluble film-forming (co)polymer based on ethylenically unsaturated monomers. The invention also covers an additive and a kit of parts suitable for use in the above process.

First claim

We claim:

1. Process to adhere a mortar to a building substrate, the process comprising the steps of (A) mixing the mortar with at least one additive, (B) applying the mortar-additive mixture to a building substrate selected from the group consisting of polystyrene-containing substrates, polyolefin-containing substrates or polyvinyl chloride-containing substrates, and (C) allowing the mortar-additive mixture to dry, the additive comprising
(i) a plasticizer that is liquid at 50° C. or lower, has a boiling point of 100° C. or higher, is capable of dissolving 1 wt % of the building substrate, and that has a solubility parameter δ at 25° C. between 22.5 MPa 1/2 and 11 MPa 1/2 , the plasticizer being selected from esters,
(ii) optionally, an inorganic filler that has a BET surface area of at least 40 m 2 /g;
(iii) a polysaccharide selected from cold water-soluble polysaccharides, polysaccharide ethers, and synthetic anionic, nonionic and cationic heteropolysaccharides, the polysaccharide optionally being chemically modified with a substituent selected from the group consisting of carboxymethyl, carboxyethyl, hydroxyethyl, hydroxypropyl, methyl, ethyl, propyl, sulfate, phosphate and long chain alkyl groups; and/or
(iv) a stabilizer selected from protective colloids; and
wherein the additive is
in the form of a liquid dispersion or powder obtained by mixing the plasticizer (i) with the polysaccharide (iii) and/or the stabilizer (iv) in pasty, swollen or dissolved form, optionally followed by drying said liquid dispersion, whereby the plasticizer (i) is not added to an aqueous dispersion containing a water-insoluble film-forming (co)polymer based on ethylenically unsaturated monomers, and
wherein the additive is used in an amount of 0.005-5 percent by weight, based on the dry weight of the mortar, including the additive.

2. Process of claim 1 , wherein the mortar is a dry mortar or contains a dry mortar component, the additive is added as a powder to the dry mortar or the dry mortar component, and the mortar is mixed with water and optional further liquid components prior to its application.

3. Process of claim 1 , wherein the polysaccharide (iii) is used and wherein said polysaccharide (iii) is selected from the group consisting of cellulose ether, starch ether, guar ether, dextrine, alginate, xanthan gum, welan gum, and diutan gum.

4. Process of claim 3 , wherein the stabilizer (iv) is used and wherein said stabilizer (iv) is a protective colloid and selected from the group consisting of fully or partially saponified polyvinyl alcohols and derivatives thereof, polyvinyl pyrrolidone, polyvinyl acetal, melamine formaldehyde sulfonates, naphthalene formaldehyde sulfonates, polymerizates of propylene oxide and/or ethylene oxide, including copolymerizates and block copolymerizates thereof, styrene-maleic acid and vinyl ether-maleic acid copolymerizates.

5. Process of claim 3 , wherein a filler (ii) is used and wherein said filler (ii) is an inorganic material selected from the group consisting of latent hydraulic binders and pozzolanic materials.

6. Process of claim 3 , wherein the amount of plasticizer (i) based on the total solids content in the mortar is between 0.01 and 2 wt %.

7. Process of claim 3 , wherein the mortar contains one or more mineral binders selected from the group of a) an hydraulically setting binder, b) a latent hydraulic binder which reacts hydraulically in combination with a calcium source and c) a non-hydraulic binder which reacts under the influences of air and water.

8. Process of claim 1 , wherein the stabilizer (iv) is used and wherein said stabilizer (iv) is a protective colloid and selected from the group consisting of fully or partially saponified polyvinyl alcohols and derivatives thereof, polyvinyl pyrrolidone, polyvinyl acetal, melamine formaldehyde sulfonates, naphthalene formaldehyde sulfonates, polymerizates of propylene oxide and/or ethylene oxide, including copolymerizates and block copolymerizates thereof, styrene-maleic acid and vinyl ether-maleic acid copolymerizates.

9. Process of claim 8 , wherein a filler (ii) is used and wherein said filler (ii) is an inorganic material selected from the group consisting of latent hydraulic binders and pozzolanic materials.

10. Process of claim 8 , wherein the amount of plasticizer (i) based on the total solids content in the mortar is between 0.01 and 2 wt %.

11. Process of claim 8 , wherein the mortar contains one or more mineral binders selected from the group of a) an hydraulically setting binder, b) a latent hydraulic binder which reacts hydraulically in combination with a calcium source and c) a non-hydraulic binder which reacts under the influences of air and water.

12. Process of claim 1 , wherein a filler (ii) is used and wherein said filler (ii) is an inorganic material selected from the group consisting of latent hydraulic binders and pozzolanic materials.

13. Process of claim 12 , wherein the amount of plasticizer (i) based on the total solids content in the mortar is between 0.01 and 2 wt %.

14. Process of claim 12 , wherein the mortar contains one or more mineral binders selected from the group of a) an hydraulically setting binder, b) a latent hydraulic binder which reacts hydraulically in combination with a calcium source and c) a non-hydraulic binder which reacts under the influences of air and water.

15. Process of claim 1 , wherein the amount of plasticizer (i) based on the total solids content in the mortar is between 0.01 and 2 wt %.

16. Process of claim 15 , wherein the mortar contains one or more mineral binders selected from the group of a) an hydraulically setting binder, b) a latent hydraulic binder which reacts hydraulically in combination with a calcium source and c) a non-hydraulic binder which reacts under the influences of air and water.

17. Process of claim 1 , wherein the mortar contains one or more mineral binders selected from the group of a) an hydraulically setting binder, b) a latent hydraulic binder which reacts hydraulically in combination with a calcium source and c) a non-hydraulic binder which reacts under the influences of air and water.

18. Process of claim 1 , wherein the polysaccharide when present is a cellulose ether.

19. Process of claim 1 , wherein the stabilizer when present is a protective colloid.

Assignees

• Nouryon Chemicals Int Bv

Inventors

• Willimann Hongli
• Koelliker Robert
• Pustovgar Andrey Petrovich
• Wicki Hans
• Heini Urs
• Aberle Thomas

Classifications

• C04B40/0039

  Premixtures of ingredients · CPC title

• E04F15/00

  Flooring (stair treads E04F11/104; coverings not specially adapted for floors E04F13/00; borders, skirtings E04F19/02; {implements for laying flooring E04F21/20;} gratings for cleaning soles of footwear A47L23/24; {built-in gratings E04F19/10; removing floor coverings E04G23/00; carpets A47G27/00;} of similar materials to roads E01C; basic or rough floors {, structural floors} E04B5/00) · CPC title

• C04B16/02 Primary

  Cellulosic materials (cellulosic waste materials, e.g. sawdust, rice husks, C04B18/24) · CPC title

• C09D5/34

  Filling pastes (materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12) · CPC title

• C04B2111/00637

  as glue or binder for uniting building or structural materials · CPC title