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US 2008/0076886 A1Published application
Novel adducts and curable compositions using same
AssigneesLoctite (R&D) Limited, Henkel AG & Co. KGaA
InventorsBarry N. Burns, Ray P. Tully, Jonathan P. Wigham, Martin J. Fitzpatrick, Rainer Schoenfeld, Ciaran B. McArdle, Mark Loane
Life of this patent
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Abstract
The present invention relates to novel adducts useful for improving the toughness and curable compositions using such toughening adducts. In a particular aspect, the present invention relates to novel toughening adducts and thermosetting resin formulations having improved fracture toughness using those toughening adducts.
Claims11
An adduct comprising:
- wherein R and R′ are each independently selected from the group consisting of backbones of polyethers, perfluorinated polyethers, polydimethylsiloxanes and hydroxy terminated polybutadienes, provided however that when R is PPG, R′ is not PPG or X is not ArO;
- Z and Z′ are each independently selected from —CH2-K-CO—, where K is C1-C12 linear or branched alkyl, C5-C12 cycloalkyl, C6-C15 aryl;
- X is selected from the group consisting of ArO— and Ar0-C═O, wherein Ar is a member selected from the group consisting of phenyl, biphenyl, bisphenol A, bisphenol F, bisphenol S, bisphenol E, allyl, alkyl, alkenyl, carboxy, N-carbamoyl functionalized five to seven membered cyclic amides, epoxy ether and hydroxyl-functionalized ether;
- and
- y is 1-4, and x is 1-3.
2 more elements
A curable composition comprising:
- a. a thermosetting component;
- and
- b. an adduct according to clam 1.
Dependencies are inferred from the claim text.