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US 6,960,619 B2Granted
Foamable photo-polymerized composition
AssigneeAcryfoam Ltd .
InventorsOleg Figovsky, Leonid Shapovalov, Raisa Potashnikov, Yury Tzaid, J. Bordado, David Letnik, Aster De Schijuer
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Abstract
Acrylic composition for use in variety of indoor or outdoor sealing applications, where it is required to seal, to fill or to repair cracks, joints, gaps etc. in concrete, masonry, stone, wood or other constructional materials. The composition comprises acrylic based reactionable oligomers and it can be foamed and then polymerized while producing foam with structure suitable for sealing.
Claims12
A foamable, photo-polymerizable liquid composition comprising:
- a) at least two acrylic-based reactionable oligomers,
- b) at least a first and a second radical producing means, capable to liberate radicals, required for polymerization of said oligomers upon exposing the composition respectively to a light or to ambient temperature,
- c) at least a first and a second blowing agent, capable to supply a gas medium for foaming the liquid composition,
- wherein said at least two acrylic-based reactionable oligomers comprise a first oligomer, being at least three functional oligoester provided with terminate acrylic groups and a second oligomer, being two fuctional oligomer provided with at least two urethane groups and at least two terminate acrylic and/or methacrylic groups, and wherein the weight ratio between the said first and said second oligomer lies betveen 1:0.5 to 1:0.2.
1 more element
Dependencies are inferred from the claim text.