Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1976-07-14
1978-03-21
Woodberry, Edward M.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156331, 260 8, 260859R, 260859PV, 428307, 428425, C09J 500
Patent
active
040802388
ABSTRACT:
A one-liquid cold setting adhesive comprising a thermoplastic, non-reactive polyurethane polymer dissolved in an addition-polymerizable combination of an acrylic or methacrylic monomer other than the acids, a copolymerizable monomer containing at least one free carboxylic group, a non-activated free radical addition polymerization catalyst system and an activator for the free radical catalyst system encapsulated in pressure-rupturable microspheres or beads having a composition which is substantially insoluble in the presence of the other components of the mixture for a relatively long time period. Exemplary of this adhesive formulation is a polyester polyurethane containing no free isocyanate groups dissolved in a mixture of methacrylic acid and methyl methacrylate, each of the three components being present in equal amounts. Included in the mix is benzoyl peroxide and hydroquinone. To this mix are added formaldehyde crosslinked gelatin microspheres having encapsulated therein an amine activator for the benzoyl peroxide. The resulant mixture has a long storage life; but when the microspheres are ruptured, the peroxide becomes activated and the adhesive bond-forming reaction takes place.
REFERENCES:
patent: 3632296 (1972-01-01), Pandell
patent: 3666597 (1972-05-01), Parnell
patent: 3748313 (1973-07-01), Bulbenko
patent: 3963680 (1976-06-01), O'Keefe
patent: 3994764 (1976-11-01), Wolinski
"Microencapsulation", Kirk-Othmer Encyclopedia of Chem. Tech., Second Ed., 1967, pp. 436-455, Wiley & Sons, N. Y., N. Y.
Chem. Absts. vol. 74 (1971) 142845f, "Storage Stable-Compositions", Bulbenko et al.
Berezuk Peter David
Wolinski Leon E.
Pratt & Lambert, Inc.
Woodberry Edward M.
LandOfFree
One-liquid cold setting adhesive with encapsulated catalyst init does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with One-liquid cold setting adhesive with encapsulated catalyst init, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and One-liquid cold setting adhesive with encapsulated catalyst init will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-569476