Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1995-04-25
1997-09-23
Nakarani, D. S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
528 38, C08G 7704
Patent
active
056705980
ABSTRACT:
Diblock (B-A) and triblock (B-A-B) polydiorganosiloxane-polyurea block copolymers comprise non-functional polydiorganosiloxane endblock B and polyurea block A. When used to provide release coatings, the block copolymers allow for easier release compared to traditional block copolymers of the (AB).sub.n type having comparable amounts of polydiorganosiloxane. Articles incorporating the copolymers as a release material are also disclosed.
REFERENCES:
patent: 3562352 (1971-02-01), Bedford
patent: 4518758 (1985-05-01), Cavezzan et al.
patent: 4528343 (1985-07-01), Kira
patent: 4968750 (1990-11-01), Eichenauer et al.
patent: 4999412 (1991-03-01), Neale et al.
patent: 5035934 (1991-07-01), Tomiyama et al.
patent: 5089336 (1992-02-01), Kumar et al.
patent: 5091483 (1992-02-01), Mazurek et al.
patent: 5183874 (1993-02-01), Veith
patent: 5214119 (1993-05-01), Leir et al.
patent: 5290615 (1994-03-01), Tushaus et al.
Journal of Polymer Science, "Macrothiuram Disulfide for the Free Radical Synthesis of PDMS-Vinyl Triblock Copolymers. I. Syntheses and Polymerization Kinetics", Clouet and Kayser, vol. 31,3387-3396 (1993).
Polymer Bulletin, "Synthesis of ABA Block Co-Oligomers of Polymethylmethacrylate and Poly (Dimethylsiloxane)", Pietrasanta et al., 15, 107-112 (1986).
Polymer, "Segmented organosiloxane copolymers". 1. Synthesis of siloxane-urea copolymers, Yilgor et al., 1800-1806, Dec. 1984.
Polymer, "Segmented organosiloxane copolymers": 2 Thermal and mechanical properties of siloxane-urea copolymers, vol, 25, 1807-1816, Dec. 1984.
Journal of Polymer Science, "Novel Triblock Siloxane Copolymers: Synthesis, Characterization, and Their Use as Surface Modifying Additives", Yilgor et al., vo.. 27, 3673-3690 (1989).
Brandt Patricia J. A.
Bronn William R.
Leir Charles M.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Nakarani D. S.
LandOfFree
Diblock and triblock polydiorganosiloxane-polyurea block copolym does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diblock and triblock polydiorganosiloxane-polyurea block copolym, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diblock and triblock polydiorganosiloxane-polyurea block copolym will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1938985