Use of additives for increasing the tensile shear strength and composition containing a silane-functionalized prepolymer and additives
AssigneeBona GmbH Deutschland
InventorHolger Wickel
Life of this patent
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Abstract
The present invention relates to a compound of the formula (I) for improving the tensile shear strength of hardened compositions based on silane-modified prepolymers, a composition containing a silane-functionalized prepolymer and a compound of the formula (I), a method for the production of this composition and the use of the compound of the formula (I) in adhesives, sealants, coatings and/or primers, based on silane-functionalized prepolymers and the use of this compound for the production of adhesives, sealants, coatings and/or primers based on silane-functionalized prepolymers.
Claims25
A method for increasing tensile shear strength of silane-modified prepolymer compositions comprising mixing a compound of the formula (I)
- with polymer consisting of silane-modified prepolymers, wherein
- X is selected from the group consisting of —OH, —H, residues with 1 to 12 C atoms, and a substituent —C(═O)—R1;
- R1 is selected from the group consisting of —OH, and residues with 1 to 25 C atoms;
- y=5;
- and
- R2 are residues that are the same or different and are selected from the group consisting of —H, —OH and residues with 1 to 12 C atoms,
- and a drying agent.
A composition containing a silane-functionalized prepolymer and a compound of the formula (I)
- wherein X represents a substituent —C(═O)—R1;
- R1 is selected from the group consisting of —OH and residues with 1 to 12 C atoms;
- y=5;
- and
- R2 are residues which are the same or different and are selected from the group consisting of —H, —OH and residues with 1 to 12 C atoms,
- and one to three of the residues R2 are —OH, with a maximum of two —OH residues situated on adjacent carbon atoms.
Adhesives, sealants, coatings and/or primers comprising a composition formed from
- (i) compound of the formula (I)
- wherein X represents a substituent —C(═O)—R1;
- R1 is selected from the group consisting of —OH and residues with 1 to 12 C atoms;
- y=5 and the residues R2 are the same or different and are selected from the group consisting of —H, —OH and residues with 1 to 12 C atoms,
- (ii) polymer consisting of silane-functionalized prepolymers and
- (iii) a drying agent
- wherein the composition exhibits increased tensile shear strength in the hardened state in comparison to comparable compositions that do no comprise the compound formula (I).
Adhesives, sealants, coatings and/or primers comprising a composition formed from
- (i) a compound of formula (I)
- wherein X represents a substituent —C(═O)—R1;
- R1 is selected from the group consisting of —OH and residues with 1 to 12 C atoms;
- y=5 and residues R2 are the same or different and are selected from the group consisting of —H, —OH and residues with 1 to 12 C atoms;
- (ii) a catalyst selected from one or more of bis(ethyl acetoacetato) bis(isobutan-1-olato)-titanium, titanium (IV) iospropanolate, titanium (IV) acetylacetonate, iron (III) acetylacetonate, aluminium triisopropanolate, dibutyltin dilaurate or dioctyltin dilaurate;
- (iii) silane-functionalized prepolymers;
- and
- (iv) drying agent
- wherein the compound of the formula (I) is present in an amount ranging from 0.005 to 0.02 wt % and said catalyst is present in an amount ranging from 0.03 to 2 wt %.
Dependencies are inferred from the claim text.