Thermally expandable compositions comprising polysaccharide
AssigneeHenkel AG & Co. KGaA
InventorsRainer Kohlstrung, Klaus Rappmann
Life of this patent
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Abstract
The present application relates to a thermally expandable composition containing at least one peroxide cross-linking polymer, at least one peroxide, at least one polysaccharide and at least one endothermic, chemical blowing agent; as well as to shaped bodies containing said composition and to a method for sealing and filling voids in components, for strengthening or reinforcing components, in particular hollow components, and for bonding mobile components using shaped bodies of this type.
Claims24
A thermally expandable composition comprising:
- a. at least one peroxidically crosslinked polymer;
- b. at least one peroxide;
- c. at least one polysaccharide;
- and
- d. at least one endothermic chemical blowing agent;
- wherein the composition is free of exothermic blowing agents.
A thermally expandable composition comprising:
- a. at least one peroxidically crosslinked polymer;
- b. at least one peroxide;
- c. more than one polysaccharide;
- and
- d. endothermic chemical blowing agents present in an amount of 15 to 25 wt. % based on total weight of the composition.
A thermally expandable composition comprising:
- a. at least one peroxidically crosslinked polymer;
- b. at least one peroxide;
- c. at least one polysaccharide;
- and
- d. chemical blowing agent consisting essentially of endothermic chemical blowing agents present in an amount of 12.1 to 15.9 wt. % based on total weight of the composition, and said endothermic chemical blowing agents are at least two selected from the group consisting of bicarbonates, carboxylic acids and urea derivatives.
Dependencies are inferred from the claim text.