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1. WO2020007765 - WATER-BASED COMPOSITION WITH CHEMICAL CROSS-LINKING

Publication Number WO/2020/007765
Publication Date 09.01.2020
International Application No. PCT/EP2019/067528
International Filing Date 01.07.2019
IPC
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
J
ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
175
Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
04
Polyurethanes
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
J
ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
163
Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
59
Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by reaction of epoxy polycondensates with monofunctional low-molecular-weight compounds; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
18
Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
40
characterised by the curing agents used
42
Polycarboxylic acids; Anhydrides, halides, or low-molecular-weight esters thereof
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18
Polymeric products of isocyanates or isothiocyanates
06
with compounds having active hydrogen
08
Processes
C09J 175/04 (2006.01)
C09J 163/00 (2006.01)
C08G 59/42 (2006.01)
C08G 18/08 (2006.01)
CPC
C08G 18/0823
C08G 18/10
C08G 18/12
C08G 18/3256
C08G 18/348
C08G 18/4812
Applicants
  • SIKA TECHNOLOGY AG [CH/CH]; Zugerstrasse 50 6340 Baar, CH
Inventors
  • MEIER, Steffen; CH
  • FAILACHE, Nestor; AR
  • SCHLUMPF, Michael; CH
Priority Data
18181732.104.07.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) WATER-BASED COMPOSITION WITH CHEMICAL CROSS-LINKING
(FR) COMPOSITION À BASE AQUEUSE À RÉTICULATION CHIMIQUE
Abstract
(EN)
The invention relates to a single-component sealant or adhesive composition, comprising: a) an aqueous polymer dispersion comprising water and at least one water-dispersed polymer P, b) at least one water-dispersed or water-dissolved epoxy- or isocyanate- functional cross-linker C with a nominal epoxy- or isocyanate- functionality of at least 2, wherein said at least one water-dispersed polymer P has functional groups selected from carboxylic acid groups, amino groups, and hydroxyl groups, and wherein said epoxy- or isocyanate-functional cross-linker C has a molecular weight of at least 1000 g/mol or a number average molecular weight Mn, determined by means of GPC against polystyrene as standard, of at least 1000 g/mol, and wherein the composition comprises between 0.1 and 50, preferably between 0.1 and 10 parts by weight of said epoxy- or isocyanate- functional cross-linker C per 100 parts by weight of said at least one water-dispersed polymer P. The composition is highly suitable as sealant or adhesive and shows excellent mechanical properties and resistance, e.g. towards water immersion, but at the same time exhibits good storage stability.
(FR)
L'invention concerne une composition d'adhésif ou de produit d'étanchéité monocomposant, comprenant : a) une dispersion aqueuse d'un polymère comprenant de l'eau et au moins un polymère P dispersé dans l'eau, b) au moins un agent de réticulation C à fonctionnalité époxy ou isocyanate, dispersé dans l'eau ou dissous dans l'eau, présentant une fonctionnalité époxy ou isocyanate nominale d'au moins 2, ledit au moins un polymère P dispersé dans l'eau présentant des groupes fonctionnels choisis parmi les groupes acide carboxylique, les groupes amino et les groupes hydroxyle, et ledit agent de réticulation C à fonctionnalité époxy ou isocyanate présentant une masse moléculaire d'au moins 1000 g/mol ou une masse moléculaire moyenne en nombre Mn, déterminée par CPG contre l'étalon polystyrène d'au moins 1000 g/mol, et la composition comprenant de 0,1 à 50, de préférence de 0,1 à 10 parties en poids dudit agent de réticulation C à fonctionnalité époxy ou isocyanate pour 100 parties en poids dudit au moins un polymère P dispersé dans l'eau. La composition convient parfaitement comme produit d'étanchéité ou adhésif et présente d'excellentes propriétés mécaniques et une excellente résistance par exemple à une immersion dans l'eau, mais simultanément présente une bonne stabilité au stockage.
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