Back to results
US 2021/0061981 A1Published application
Thermaly expandable composition with reduced odor formation
AssigneeSika Technology AG
InventorsKarsten FRICK, Sascha PASULA, Alina KELLER, Leslie WOLSCHLEGER, Elizabeth FARHAT
Life of this patent
Estimating the term…
Abstract
A thermally expandable composition includes at least one polymer P cross-linkable by peroxide, and at least one acrylate, and at least one peroxide, azodicarbonamide and a zinc compound. The thermally expandable composition leads to low odor formation and low ammonia emission during and after the foaming process. The thermally expandable composition further shows excellent properties in terms of expansion stability.
Claims13
A thermally expandable composition, comprising
- (a) at least one polymer P, cross-linkable by peroxide, and
- (b) at least one acrylate A, and
- (c) at least one peroxide PE, and
- (d) azodicarbonamide ADCA,
- (e) zinc compound ZC,
- wherein the molar ratio of the zinc compounds ZC to the peroxide PE is between 0.1 and 6.0,
- and the molar ratio of the azodicarbonamide ADCA to the peroxide PE is between 5 and 30.
4 more elements
Dependencies are inferred from the claim text.