Anti-stick coatings for reactors
OwnerMichael Mager, Christian Mahner +1inventors
InventorsMichael Mager, Christian Mahner, Gerhard Langstein
Life of this patent
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Abstract
The present invention relates to compositions containing defined sol-gel materials as anti-stick coatings and to apparatus for preparing and processing polymers, such as rubbers, characterized in that they possess such an anti-stick coating containing a hydrophobic sol-gel material.
Claims9
An anti-stick coating composition for an apparatus for preparing and producing polymers comprising at least one structural element of the formula (I)
- [R1-(E)i-]j-Si[R2k(O1/2)3−k]4−j (I)
- wherein
- i is 0 or 1,
- j is 1, 2 or 3,
- k is 0, 1 or 2,
- E is oxygen or sulphur,
- R1 is an optionally substituted alkyl or aryl radical or a bridging alkylene or arylene radical, and
- R2 is an optionally substituted alkyl or aryl radical.
A process for coating an apparatus for preparing or processing polymers, with an anti-stick coating composition comprising the steps of:
- applying a sol-gel coating solution comprising at least one structural element of the formula (I)
- [R1-(E)i-]j-Si[R2k(O1/2)3−k]4−j (I),
- wherein
- i is 0 or 1,
- j is 1, 2 or 3,
- k is 0, 1 or 2,
- E is oxygen or sulphur,
- R1 is an optionally substituted alkyl or aryl radical or a bridging alkylene or arylene radical, and
- R2 is an optionally substituted alkyl or aryl radical to an apparatus, evaporating volatile constituents off the apparatus, curing the solution to the apparatus.
An apparatus for preparing or processing polymers, coated with an anti-stick coating composition comprising at least one structural element of the formula (I)
- [R1-(E)i-]j-Si[R2k(O1/2)3−k]4−j (I)
- wherein
- i is 0 or 1,
- j is 1, 2 or 3,
- k is 0, 1 or 2,
- E is oxygen or sulphur,
- R1 is an optionally substituted alkyl or aryl radical or a bridging alkylene or arylene radical, and
- R2 is an optionally substituted alkyl or aryl radical.
Dependencies are inferred from the claim text.