Moisture-crosslinkable composition and self-adhesive article containing the same

Abstract

The present invention relates to - at least one silyl polymer (A); - a tackifying resin (B); - at least one compound (C) selected from the group consisting of: · a compound of formula (F1) and its oligomer / polymer derivatives: R 0 -O-[-Si(OR 0 )2-O-] t -R 0 (F1) · a compound of formula (F2): JPEG2026519129000021.jpg47144 - an aminopolysiloxane compound; and - mixtures thereof; and the composition is characterized by having a glass transition temperature in the range of -25°C to 20°C, relates to a moisture crosslinkable adhesive composition.

Claims

1. A water-crosslinkable adhesive composition, - with at least one silyl polymer (A); - With tackifying resin (B); - At least one compound (C) selected from the group consisting of the following: • Compounds of formula (F1) and their oligomers / polymer derivatives: R ０ -O-[-Si(OR ０ ) ２ -O-] ｔ -R ０ (F1) During the ceremony, R ０ These are independently selected from alkyl and aryl groups. t represents an integer between 1 and 20, preferably between 1 and 7. Compound of formula (F2): 【Chemistry 1】 During the ceremony, R' ０ These are independently selected from alkyl groups containing 1 to 10 carbon atoms. u is an integer in the range of 3 to 5000. • Aminopolysiloxane compounds; and These mixtures; Includes, The composition is characterized by having a glass transition temperature in the range of -25°C to 20°C. Moisture crosslinkable adhesive composition.

2. The moisture-crosslinkable adhesive composition according to claim 1, characterized by having a glass transition temperature in the range of -20°C to 15°C.

3. A moisture-crosslinkable adhesive composition according to either claim 1 or 2, characterized in that the silyl polymer (A) corresponds to one of formulas (II'), (III'), or (IV'): 【Chemistry 2】 During the ceremony, -R １ This represents a divalent hydrocarbon group containing 5 to 15 carbon atoms, which may be aromatic or aliphatic. -R ３ represents a linear or branched divalent alkylene group containing 1 to 6 carbon atoms, preferably 1 to 3 carbon atoms, -X is -NH-, -NR ７ Represents a divalent group selected from - or -S-, -R ７ This represents a linear or branched alkyl group containing 1 to 20 carbon atoms and possibly one or more heteroatoms. -R ４ R represents a linear or branched alkyl group containing 1 to 4 carbon atoms, and multiple R groups ４ If they exist, these bases may be identical or different; -R ５ R represents a linear or branched alkyl group containing 1 to 4 carbon atoms, and multiple R groups ５ If present, these groups may be identical or different, and two groups OR ５ they may be included in the same ring; and -p is an integer equal to 0, 1, or 2, preferably 0 or 1. -R ２ This represents a group of a saturated or unsaturated, linear or branched divalent hydrocarbon system that optionally contains one or more heteroatoms such as oxygen, nitrogen, sulfur, or silicon, and preferably has a number-average molar mass in the range of 100 g / mol to 48,600 g / mol, more specifically 300 g / mol to 38,600 g / mol, and -n is a non-negative integer.

4. R ２ The water-crosslinkable adhesive composition according to claim 3, characterized in that the group is a divalent group derived from a polyether, preferably a poly(oxyalkylene)diol, and more specifically from polypropylene glycol.

5. The water-crosslinkable adhesive composition according to any one of claims 1 to 4, characterized in that the tackifying resin (B) is selected from terpene resins, and more preferably from terpene-phenol resins.

6. The moisture-crosslinkable adhesive composition according to any one of claims 1 to 5, characterized in that compound (C) is selected from the compound of formula (F1) and its oligomer / polymer derivatives.

7. The moisture-crosslinkable adhesive composition according to claim 6, characterized in that the compound of formula (F1) and its oligomer / polymer derivative are as follows: -R ０ is selected from ethyl, n-propyl, butyl or isopropyl; and / or -t represents an integer in the range of 1 to 20; Prioritizing, -R ０ is ethyl; and / or -t is an integer in the range of 2 to 7.

8. A water-crosslinkable adhesive composition according to any one of claims 1 to 7, characterized in that compound (C) is selected from tetraethoxyorthosilicate, tetrapropoxyorthosilicate, tetraisopropoxyorthosilicate, tetrabutoxyorthosilicate, their oligomers / polymer derivatives, and mixtures thereof, and more preferably from tetraethoxyorthosilicate, their oligomers / polymer derivatives, and mixtures thereof.

9. A moisture-crosslinkable adhesive composition according to any one of claims 1 to 8, characterized by comprising 1% to 50% by weight of compound (C), preferably 4% to 40% by weight of compound (C), and more preferably 5% to 20% by weight of compound (C) based on the total weight of the composition.

10. The composition according to any one of claims 1 to 9, characterized in that it contains a total content of carbonate-based fillers of 15% by weight or less, more preferably 10% by weight or less, and even more preferably 5% by weight or less, based on the total weight of the composition.

11. A moisture-crosslinkable adhesive composition according to any one of claims 1 to 10, characterized in that it does not contain any carbonate-based fillers.

12. A moisture-crosslinkable adhesive composition according to any one of claims 1 to 11, characterized in that it is a pressure-sensitive adhesive (PSA) composition.

13. A moisture-crosslinkable adhesive composition according to any one of claims 1 to 12, characterized in that, when measured according to FINAT Method No. 1 of 2001, it has an adhesive strength (peel at 180°) of 0.4 N / cm or more at 23°C and 180° after crosslinking.

14. - Composition U (as the first component), - Silyl polymer (A); and -Tackifying resin (B); -Optionally, compound (C); Composition U, which includes, - Composition V (as a second component), -Compound (C) Composition V, which includes, It is in the form of a multi-component composition containing, The optional catalyst (D) is contained in composition V or, alternatively, in composition W (the third component). A moisture-crosslinkable adhesive composition according to any one of claims 1 to 13, characterized in that

15. A self-adhesive article comprising a support layer covered with a self-adhesive layer, wherein the self-adhesive layer, in a crosslinked state, comprises the adhesive composition described in any one of claims 1 to 13.

16. - Silyl polymer (A); -Tackifying resin (B); The use of compound (C) according to any one of claims 1 to 14 for improving the aging resistance of the crosslinked composition in an adhesive composition containing the above.

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