[미국특허]
Lignite-based urethane resins with enhanced suspension properties and foundry sand binder performance
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B22C-001/22
C08G-018/63
C08H-007/00
C08L-097/00
C08L-099/00
C08G-018/08
C08L-075/00
C08G-018/67
C08L-071/02
C09D-007/00
C09D-007/02
C08G-018/64
출원번호
US-0574475
(2009-10-06)
등록번호
US-8853299
(2014-10-07)
발명자
/ 주소
SenGupta, Ashoke K.
Losacco, Vincent J.
Darlington, Jr., Jerald W.
출원인 / 주소
Amcol International Corp.
대리인 / 주소
Marshall, Gerstein & Borun LLP
인용정보
피인용 횟수 :
0인용 특허 :
54
초록▼
Described herein, in the preferred embodiment, is a leonardite-based polyurethane resin binder that may be used, among other applications, as a binder in combination with foundry aggregate, e.g., sand, for molding or casting metal parts. The binders described herein comprise a humic substance, prefe
Described herein, in the preferred embodiment, is a leonardite-based polyurethane resin binder that may be used, among other applications, as a binder in combination with foundry aggregate, e.g., sand, for molding or casting metal parts. The binders described herein comprise a humic substance, preferably leonardite, combined with a polymerizable polyol, an isocyanate, and a polymerization catalyst to make a polyurethane resin binder in situ in a foundry aggregate, such as sand. The lignite is mixed with the polymerizable polyol, thickening and dispersing agents as additives to improve the suspension quality and binder performance of the lignite-containing part of the binder components.
대표청구항▼
1. A foundry mix comprising: a binder consisting essentially of a lignite-polyurethane resin that is a reaction product of a lignite-polyol suspension that is stable against separation, a polymerizable isocyanate, and a polyurethane polymerization catalyst; anda foundry aggregate;wherein the lignite
1. A foundry mix comprising: a binder consisting essentially of a lignite-polyurethane resin that is a reaction product of a lignite-polyol suspension that is stable against separation, a polymerizable isocyanate, and a polyurethane polymerization catalyst; anda foundry aggregate;wherein the lignite-polyol suspension includes a dispersing agent and passes the static settling test. 2. The foundry mix of claim 1 consisting essentially of: the lignite-polyurethane resin binder that comprises a reaction product of a lignite-polyol suspension that is stable against separation, the polymerizable isocyanate, and a polyurethane polymerization catalyst; andthe foundry aggregate. 3. The foundry mix of claim 2, wherein the foundry mix comprises about 0.1 to about 10 parts by weight of the lignite-polyurethane resin and about 100 parts by weight of the foundry aggregate. 4. The foundry mix of claim 2, wherein the polymerization catalyst is selected from group consisting of 1,4-diazabicyclo[2.2.2]octane (DABCO), 1,5-diazabicyclo[4.3.0]non-5-ene (DBN), 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), pentamethyldipropylenetriamine, bis(dimethylamino ethyl)ether, pentamethyldiethylenetriamine, dimethylcyclohexylamine, tris (3-dimethylamino) propylamine, and a mixture thereof. 5. The foundry mix of claim 1, wherein the lignite-polyurethane resin consists essentially of the reaction product of the lignite-polyol suspension, the polymerizable isocyanate, and the polyurethane polymerization catalyst. 6. The foundry mix of claim 5, wherein the lignite-polyol suspension consists essentially of lignite, a polyol, a dispersing agent, and optionally a solvent. 7. The foundry mix of claim 1, wherein the lignite comprises about 0 to about 10 wt. % water, based on the weight of dry lignite. 8. The foundry mix of claim 1, wherein the lignite is leonardite. 9. The foundry mix of claim 6, wherein the dispersing agent is a polymer selected from the group consisting of (A) a polymer selected from the group consisting of a monoesterified polyethylene glycol (PEG), a poly(acrylic acid) (PAA), a poly(methacrylic acid) (PMA), a poly(vinyl alcohol) (PVA), a poly(acrylamide), a poly(ethylene imine), a poly(diallyldimethyl ammonium halide), a poly(vinyl methyl ether), and a mixture thereof; (B) a polyvinylpyrrolidone (PVP); (C) a polyvinylpyrrolidone copolymer; and (D) a copolymer of a plurality of monomers selected from the group consisting of propylene oxide, vinyl acetate, vinyl amine, vinyl chloride, acrylamide, acrylonitrile, ethylene, propylene, ethylene oxide, lauryl methacrylate, methyl methacrylate, hydroxystearate, dimethylsiloxane, diallyldimethyl ammonium halide, ethylenimine, acrylic acid, and methacrylic acid; and (E) a mixture thereof. 10. The foundry mix of claim 9, wherein the polymer is selected from the group consisting of from PEG-100 monostearate, PEG-125 monostearate, PEG-150 monostearate, and a mixture thereof.
Drinkuth Franz (Odenthal DEX) von Bonin Wulf (Leverkusen DEX) Schpel Dietmar (Cologne DEX) Lorenz Artur (Konstanz-Litzelstetten DEX), Aqueous preparation and its use for the preparation of ceramic masses.
Torbus Marek,DEX ; Ladegourdie Gerad Phillippe,DEX, Binder system on the basis of polyurethane for molding material mixtures for use in the production of casting molds and cores.
Morimoto Haruo (187 ; Nakajinzenji Kochi-shi ; Kochi-ken JPX), Composition of matter and solid medium based-on naturally-occurring humic allophane soil useful in treatment of fluids.
Holeschovsky Ulrich B. ; Robbins Jeffrey L. ; Stefanou Harry ; Langsdorf Leah ; Gibala David ; Pollock Robert R., Face-up coating of carpet backs with polyurethane.
Reischl Artur (Leverkusen DEX), Filler-containing polyurethane (urea) compositions prepared from prepolymers reacted with water in the presence of ligni.
Landis Charles R. (Lake in the Hills IL), Foundry sand additives and method of casting metal, comprising a humic acid-containing ore and in-situ activated carbon.
Lang William J. (Libertyville IL) Krajewski John J. (Wheeling IL), Foundry sand compositions containing graft copolymers of biochemically-synthesized heteropolysaccharides.
Paul Albert P. (Teaneck NJ) Card Roger J. (Stamford CT), Method of manufacturing a bonded particulate article by reacting a polyol and a meterocyclic compound.
Sardessai Kashinath S. (172 Friar La. McMurray PA 15317) Pollok Thomas S. (111 Clearview Dr. McMurray PA 15317), Process for making moisture resistant briquettes.
von Bonin Wulf (Odenthal DEX) Muller Hanns-Peter (Odenthal DEX) Kapps Manfred (Bergisch Gladbach DEX), Process for the production of optionally cellular polyurethanes and/or polyurethane ureas.
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