Back to results
US 2014/0155545 A1Published application
Cross-linkable materials based on organyl oxysilane-terminated polymers
AssigneeWacker Chemie AG
InventorsVolker Stanjek, Bernd-Josef Bachmeier, Lars Zander
Life of this patent
Estimating the term…
Abstract
Moisture curable adhesives of high tensile shear strength contain an alkoxysilyl-terminated polymer and an alkoxy-functional silicone resin.
Claims12
-11. (canceled)
A crosslinkable composition comprising:
- (A) 100 parts by weight of compounds (A) of the formula
- Y—[(CR12)b—SiRa(OR2)3-a]x (I),
- where
- Y is an x-valent organic polymer radical bonded via nitrogen, oxygen, sulfur, or carbon and which comprises, as a polymer chain, polyoxyalkylene, hydrocarbon polymer, polyurethane, polyester, polyamide, polyacrylate, polymethacrylate, or polycarbonate,
- R are identical or different and are monovalent, optionally substituted, SiC-bonded hydrocarbon radicals,
- R1 are identical or different and are hydrogen or monovalent, optionally substituted hydrocarbon radicals, which are optionally attached to the carbon atom by a nitrogen, phosphorus, oxygen, sulfur or carbonyl group,
- R2 are identical or different and are hydrogen or a monovalent, optionally substituted hydrocarbon radical,
- x is an integer from 1 to 10,
- a is identical or different and is 0, 1, or 2, and
- b is identical or different and is an integer from 1 to 10, and
- (B) more than 50 parts by weight of silicone resins comprising units of the formula
- R3c(R4O)dR5eSiO(4-c-d-e)/2 (II),
- where
- R3 are identical or different and are hydrogen, a monovalent, SiC-bonded, optionally substituted aliphatic hydrocarbon radical, or a divalent, optionally substituted, aliphatic hydrocarbon radical which bridges two units of the formula (II),
- R4 are identical or different and are hydrogen or a monovalent, optionally substituted hydrocarbon radical,
- R5 are identical or different and are monovalent, SiC-bonded, optionally substituted aromatic hydrocarbon radicals,
- c is 0, 1, 2, or 3,
- d is 0, 1, 2, or 3, and
- e is 0, 1, or 2,
- with the proviso that the sum of c+d+e is less than or equal to 3 and in at least 40% of the units of the formula (II) the sum c+e is 0 or 1.
17 more elements
Dependencies are inferred from the claim text.