Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1986-08-22
1988-09-13
Lilling, Herbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523137, 523200, 523209, 524413, 524497, 524733, 524760, 524762, 524766, 524767, 524780, 524785, 524808, 524832, C08K 904, C08K 310, C08K 910
Patent
active
047710861
ABSTRACT:
Finely divided water insoluble solid particles free of ionic charges and ranging in size from about 0.01 to several hundred microns or higher, including but not limited to paint pigment particles, are given a generally uniform polymeric encapsulation by admixing such particles in an aqueous reaction medium with a water insoluble monomer polymerizable to form a generally water insoluble polymer free of ionic charges in the presence of a nonionic surface active stabilizing agent, preferably a polyethoxylated alkyl phenol containing at least about eight carbon atoms in the alkyl group thereof and preferably at least about 40-50 ethylene oxide groups per molecule, and polymerization of the monomer is then initiated, usually with heating, with a redox polymerization initiating system which is free of ionic groups and does not decompose to release ionic groups in the reaction medium. Naturally agglomerated particulate materials are effectively dispersed in situ during polymerization, eliminating the necessity for preliminary grinding and/or dispersion treatments. Monomers generally useful for emulsion polymerization and free of ionic groups are effective and reaction conditions are generally the same as employed in emulsion polymerization. The polymerization product is a suspension of generally discrete particles enveloped within a polymeric coating which exhibits remarkable stability against flocculation or settling. White paint pigments, e.g., titanium dioxide, encapsulated in this manner exhibit greatly increased hiding power, while colored pigments exhibit greater brilliance and depth of color in dried paint films, and the film in either case has much improved abrasion or scrub resistance, and much improved stain resistance due to reduced porosity, all compared to equivalent conventional latex paints.
REFERENCES:
patent: 2040818 (1936-05-01), Badollet
patent: 2558302 (1951-06-01), Marcot et al.
patent: 2637394 (1954-08-01), Somermeyer
patent: 2876133 (1959-03-01), Iler et al.
patent: 2982762 (1961-05-01), Vocks et al.
patent: 3083118 (1963-03-01), Bridgeford
patent: 3133893 (1964-05-01), Newman
patent: 3166429 (1965-01-01), Wich
patent: 3200007 (1965-08-01), Flowers
patent: 3223518 (1965-12-01), Hansen
patent: 3232903 (1966-02-01), Schmidle et al.
patent: 3330693 (1967-07-01), Rumberger
patent: 3359130 (1967-12-01), Goldman
patent: 3393162 (1968-06-01), Cox
patent: 3393165 (1968-07-01), Evans
patent: 3492253 (1970-01-01), Katz
patent: 3502582 (1970-03-01), Clemens
patent: 3519594 (1970-07-01), Michaels
patent: 3532662 (1970-10-01), Ansdell
patent: 3544500 (1970-12-01), Osmond et al.
patent: 3661620 (1972-05-01), Dekking et al.
patent: 3677804 (1972-07-01), Kalnin et al.
patent: 3691090 (1972-09-01), Kitajima et al.
patent: 3714102 (1973-01-01), Peiss
patent: 3763084 (1973-10-01), Grudus et al.
patent: 3834923 (1974-09-01), Hodgkin et al.
patent: 3839064 (1974-10-01), Vincent
patent: 3855172 (1974-12-01), Iller
patent: 3876603 (1975-04-01), Makhlouf
patent: 3879335 (1975-04-01), Storck et al.
patent: 3884871 (1975-05-01), Herman
patent: 3891572 (1975-06-01), Moody et al.
patent: 3897586 (1975-07-01), Coker
patent: 3904562 (1975-09-01), Hopfenberq et al.
patent: 3925096 (1975-12-01), Karkov
patent: 3929502 (1975-12-01), Hodgkin et al.
patent: 3935339 (1976-01-01), Cooke
patent: 3953657 (1976-04-01), Yamaguchi et al.
patent: 3991007 (1976-11-01), Perronlon et al.
patent: 4007141 (1977-02-01), Wismer et al.
patent: 4013615 (1977-03-01), Ohashi et al.
patent: 4042476 (1977-08-01), Collins et al.
patent: 4048138 (1977-09-01), Miga
patent: 4090887 (1978-05-01), Marquisee et al.
patent: 4107126 (1978-08-01), Burke et al.
patent: 4107132 (1978-08-01), Burke et al.
patent: 4110492 (1978-08-01), Hayman
patent: 4132561 (1979-01-01), Burke, Jr. et al.
patent: 4132562 (1979-01-01), Burke, Jr. et al.
patent: 4132563 (1979-01-01), Burke et al.
patent: 4132564 (1979-01-01), Burke et al.
patent: 4143026 (1979-03-01), Panek et al.
patent: 4154621 (1979-05-01), Burke, Jr. et al.
patent: 4157323 (1979-06-01), Yen et al.
patent: 4166811 (1979-09-01), Marr et al.
patent: 4209430 (1980-06-01), Weber
patent: 4248765 (1981-02-01), Patil et al.
patent: 4265960 (1981-05-01), Arbit et al.
patent: 4421660 (1983-12-01), Solc
patent: 4609608 (1986-09-01), Sole
patent: 4654267 (1987-03-01), Ugelstad et al.
Feltovic Robert J.
Lilling Herbert J.
Union Carbide Corporation
LandOfFree
Encapsulating finely divided solid particles in stable suspensio does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Encapsulating finely divided solid particles in stable suspensio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encapsulating finely divided solid particles in stable suspensio will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-807313