Unlock instant, AI-driven research and patent intelligence for your innovation.

Water-based two-part adhesive

A water-based adhesive, adhesive technology, applied in the direction of adhesive types, chloroprene adhesives, adhesives, etc., can solve problems such as complex spraying equipment

Inactive Publication Date: 2012-05-30
HENKEL KGAA
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But such a process requires complex spraying equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Prepare a mixture from:

[0052] Polychloroprene dispersion (Dispercoll C74 and C84, 1:6; about 55% solids)

67％

Polyacrylate dispersion (Acronal S 400, about 56% solids)

9％

Styrene / butadiene dispersion (Intex 131, about 65% solids)

17.8％

Plasticizer (Benzyl Ester)

1.8％

Sodium Lauryl Sulfate (10%)

2.7％

anti aging agent

1.3％

Buffer solution (composed of glycine, borax, NaOH, ammonium bicarbonate)

about 0.5%

[0053] The components were mixed under a high speed stirring system. The result is a storage-stable adhesive having a solids content of about 55% by weight. Its pH is about 12. The adhesive has a viscosity of about 300 mPas.

[0054] An activator solution consisting of 10% citric acid in water was prepared.

[0055] Adherent dust was removed from the surface of the substrate (5 x 10 cm) consisting of wood and solid foamed material. The adhesive dispersion layer (abou...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for gluing two substrates together, wherein one substrate is coated with a layer of an aqueous adhesive containing dispersions from chlorinated polyolefins and additives having a pH of 10 to 13. An activator solution is applied to the first or second substrate in a subsequent step, wherein the activator solution contains substances comprising acid groups, and gluing the coated surfaces together using light pressure. The invention describes a 2-part adhesive consisting of a storage-stable aqueous adhesive dispersion containing 25 to 50% by weight chlorinated polyolefins, 5 to 30% by weight additional polymers, and additives and water having a pH value of 9 to 13 and an activator solution as a second component, wherein the activator solution contains carboxylic acids, sulfonic acids, phosphonic acids, polymers comprising carboxylic acid or sulfonic acid groups, inorganic acid salts or Lewis acids, and water or organic solvents.

Description

technical field [0001] The invention relates to a method for bonding substrates using aqueous adhesives based on chlorinated polyolefins, wherein at least one substrate has a corresponding adhesive layer and the adhesive is provided with a further activator layer. Background technique [0002] Solvent-containing adhesives based on chloroprene are known. In this context, the binder is applied as a solution or dispersion, and the solvent can then evaporate. This mode of application is time-consuming and the solvent content does not meet current environmental requirements. Aqueous binders such as chloroprene dispersions are also known. In this context, various agents are used to adjust or lower the pH of the binder dispersion. [0003] WO 98 / 53019 describes aqueous adhesives based on polychloroprene comprising boric acid. In this scenario, the pH is set between 7-9.5. These adhesives are coated on and then bond the substrates. [0004] WO 01 / 77248 describes aqueous adhesi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J5/04C08J5/12C09J111/02
CPCC09J123/28C09J2411/00C08J5/127C09J5/04C08L2666/02
Inventor J·洛伦茨R·劳特尔J·金勒E·柯尼希
Owner HENKEL KGAA