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US 6,320,066 B1Granted
Amino-functional urea-alkoxysilanes, a method for the production thereof and their use
AssigneesBayer Aktiengesellschaft, Bayer Antwerpen N.V.
InventorsRaymond Audenaert, Joachim Simon, Detley Joachimi, Alexander Karbach
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Abstract
A water-soluble compound suitable for coating a variety of substrates is disclosed. The compound is prepared by reacting a diisocyanate with a diamino alkoxysilane, optionally also with a nonionic hydrophilic compound. Suitable substrates include oxides in solid form, glass, mineral and wood.
Claims6
Water-soluble oligomeric or polymeric amino-functional urea alkoxysilane compounds obtainable by reacting
- a) from 1 to 1.8 equivalents of a diisocyanate with
- b) 2 equivalents of a diamine consisting of
- b1) from 80 to 100 wt. % of a diamino alkoxysilane of the formula (I)
- HN(R1)—Z—N(H)—Y—Si(OR2)(3−a)R3a (I)
- wherein
- Z denotes C1-C6-alkylene, C5-C10-cycloalkylene or arylene,
- R1 denotes H, C1-C6-alkyl or C5-C10-cycloalkyl,
- Y denotes C3-C6-alkylene,
- R2 denotes C1-C6-alkyl or C5-C10-cycloalkyl,
- a is from 0 to 2, and
- R3 denotes C1-C6-alkyl or C5-C10-cycloalkyl, and
- b2) from 0 to 20 wt. % of at least one nonionic hydrophilic compound comprising ether groups and having per molecule two groups capable of reacting with isocyanate groups, in particular hydroxyl and/or amino groups.
9 more elements
A substrate coated with a water-soluble compound that is prepared by reacting
- a) 1 to 1.8 equivalents of a diisocyanate with
- b) 2 equivalents of a mixture of 80 to 100 percent b1) and 0 to 20 percent of b2), the percent, both occurrences relating to the weight of b), wherein said b1) is a diamino alkoxysilane conforming to
- HN(R1)—Z—N(H)—Y—Si(OR2)(3−a)R3a
- wherein Z denotes a C1-6-alkylene, C5-10-cycloalkylene or arylene, R1 denotes H,C1-6-alkyl or C5-10-cycloalkyl, Y denotes C3-6-alkylene, R2 denotes C1-6-alkyl or C5-10-cycloalkyl, a is 0 to 2, and R3 denotes C1-6-alkyl or C5-10-cycloalkyl, and where said b2) is at least one nonionic hydrophilic compound the molecular structure of which contains at least one ether group and two groups capable of reacting with isocyanate groups, said substrate being a member selected from the group consisting of oxide in solid form, glass, mineral and wood.
1 more element
Dependencies are inferred from the claim text.