Stock material or miscellaneous articles – Layer or component removable to expose adhesive – Halogen containing compound
Patent
1992-08-31
1994-03-01
Dean, Ralph H.
Stock material or miscellaneous articles
Layer or component removable to expose adhesive
Halogen containing compound
4284255, 428447, 427387, 528 28, 528 38, A61F 1302
Patent
active
052906159
ABSTRACT:
Block copolymers having a repeating unit comprised of polysiloxane and urea segments are prepared by copolymerizing certain diaminopolysiloxanes with diisocyanates. The invention also provides novel diaminopolysiloxanes useful as precursors in the preparation of the block copolymers and a method of making such diaminopolysiloxanes. Pressure-sensitive adhesive compositions comprising the block copolymer are also provided as are sheet materials coated with the same.
REFERENCES:
patent: 3562352 (1971-02-01), Nyilas
patent: 3957724 (1976-05-01), Schurb et al.
patent: 4002794 (1977-01-01), Schwarz
patent: 4203883 (1980-05-01), Hangauer, Jr.
patent: 4518758 (1985-05-01), Cavezzan et al.
patent: 4528343 (1985-07-01), Kira
patent: 4677182 (1987-06-01), Leir et al.
"Segmented Organosiloxane Copolymers. 1. Synthesis of Siloxane-urea Copolymers" and Segmented Organosiloxane Copolymers: 2. Thermal and Mechanical Properties of Siloxane-urea Copolymers, Polymer, vol. 25, Dec. 1984, pp. 1800-1806 and 1807-1816.
"Polydimethylsiloxane-Polyurethane Elastomers: Synthesis and Properties of Segmented Copolymers and Related Zwitterionomers", Journal of Polymer Science: Polymer Physics Edition, vol. 23, pp. 2319-2338, 1985.
"Tetramethylammonium 3-Aminopropyl Dimethylsilanolate-A New Catalyst for the Synthesis of High Purity, High Molecular Weight .alpha.,.omega.-bis(Aminopropyl) Polydimethylsiloxanes", Polymer International, vol. 24, No. 3, 1991, pp. 131-138.
Chemie Und Technologie Der Silicone, Walter Noll, 1968, p. 89.
Tushaus Leonard A.
Widerholt Gary T.
Bond William J.
Dean Ralph H.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
LandOfFree
Organopolysiloxane-polyurea block copolymer release agents does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Organopolysiloxane-polyurea block copolymer release agents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Organopolysiloxane-polyurea block copolymer release agents will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-575636