| Patent Number |
Title Of Patent |
Date Issued |
| 7319131 |
Phenolic resins |
January 15, 2008 |
| The invention herein disclosed comprises the use of oxazolidines, nitroalcohols, nitrones, halonitroparaffins, oxazines, azaadamantanes, hexamethylenetetramine salts, nitroamines, imidazolidines, triazines, nitrooxazolidines, and imidazolidine-oxazolidine hybrids to serve as hardener |
| 7317064 |
Phenolic resin systems for fiber reinforced composite manufacture |
January 8, 2008 |
| The invention includes formulations useful for creating reinforced composites based on 1) novolac resin compositions, and, 2) non-formaldehyde hardeners, as well as processes for manufacturing components using said reinforced composites. |
| 7317063 |
Phenolic resins |
January 8, 2008 |
| The invention herein disclosed comprises the use of oxazolidines, nitroalcohols, nitroamines, aminonitroalcohols, imines, hexahydropyrimidines, nitrones, hydroxylamines, nitro-olefins and nitroacetals to serve as hardeners and/or as catalysts for curing phenolic resins. The hardeners |
| 7119131 |
Urethane binder compositions for foundry applications |
October 10, 2006 |
| Foundry cores and molds for casting metals are prepared by forming a binder comprising a polyol, an isocyanato urethane polymer and a urethane catalyst. The binder additives and resin formulations of the invention are especially useful for casting non-ferrous metals, for example, the |
| 4661254 |
Chlorine-resistant semipermeable membranes |
April 28, 1987 |
| Chlorine-resistant semipermeable membranes which comprise an interfacial polymerization reaction product composited on a porous backing support material may be prepared by contacting a porous support material such as polysulfone with an aqueous solution of triaryl triamine. The coated |
| 4627859 |
Facilitated gas enrichment membrane composites and a process for the preparation thereof |
December 9, 1986 |
| Facilitated gas enrichment membrane composites which are utilized in the separation of gases or gas enrichment of a gas mixture will comprise an organometallic compound which acts as a gas carrier interdispersed in an interpenetrating polymer network matrix. The network matrix which |
| 4614770 |
NADHCN mimics as chiral pseudocyanotransferases |
September 30, 1986 |
| A broad class of polymers which mimic the NAD-NADHCN couple is disclosed. These polymeric pseudocyanotransferases may be used to effect asymmetric hydrocyanation of many types of carbonyl, thiocarbonyl, and imino groups in either a batch or continuous process, with the absolute configura |
| 4614769 |
NADH.sub.2 mimics as chiral pseudohydrogenases |
September 30, 1986 |
| A broad class of polymers which mimic the NAD--NADH.sub.2 couple is disclosed. These polymeric pseudohydrogenases may be used to asymmetrically reduce many types of carbonyl, thiocarbonyl, and imino groups in either a batch or continuous process, with the absolute configuration of th |
| 4613440 |
Composite membranes based on interpenetrating polymer networks |
September 23, 1986 |
| Semipermeable composite membranes which comprise an interpenetrating polymer network of the reaction product of a polyether and an isocyanate with a heterocyclic nitrogen-containing compound composited on a porous backing support material may be used in separation systems such as reverse |
| 4536301 |
Enhanced oil recovery |
August 20, 1985 |
| The recovery of residual oil which is found in subterranean reservoirs may be accomplished by utilizing an aqueous surfactant slug to reduce the interfacial tension between oil and water. An effective surfactant slug which may be used will comprise a mixture of: (1) from about 1 to about |
| 4511492 |
Electrically conducting aromatic azopolymers and method of preparation |
April 16, 1985 |
| Aromatic azopolymers can be prepared in generally high yield by oxidatively coupling aromatic diamines using perborate salts. Glacial acetic acid is an effective solvent, and the presence or boric acid in the reaction medium sometimes improves product yield. Polymer yields over 70% gener |
| 4505846 |
Electrically conducting polymers |
March 19, 1985 |
| The polymers resulting from reaction of a .alpha.,.alpha.,.alpha.',.alpha.'-tetrahaloxylene with a diamine of the type H.sub.2 NANH.sub.2, where A is a divalent aromatic moiety, may be doped with a variety of materials to afford electrically conducting polymeric compositions. Both p- |
| 4501675 |
Enhanced oil recovery |
February 26, 1985 |
| Petroleum may be recovered from subterranean formation in an enhanced oil recovery process by utilizing an aqueous surfactant slug comprising a mixture of a sulfonate of a gas oil which has been obtained from the thermal cracking of coal, a lower alkyl alcohol containing from about 3 to |
| 4466910 |
Electrically conducting polymers |
August 21, 1984 |
| The polymers resulting from reaction of a .alpha.,.alpha.,.alpha.',.alpha.'-tetrahaloxylene with a diamine of the type H.sub.2 NANH.sub.2, where A is a divalent aromatic moiety, may be doped with a variety of materials to afford electrically conducting polymeric compositions. Both p- |
| 4426313 |
Preparation of surfactants by sulfonating derivatives of depolymerized coal |
January 17, 1984 |
| Surfactants or surface active agents may be obtained by treating the product obtained from the boron trifluoride etherate catalyzed depolymerization of coal with a sulfonating agent such as sulfur trioxide and thereafter neutralizing the sulfonated product with a basic compound such |
| 4424169 |
Preparation of surfactants |
January 3, 1984 |
| Surfactants, or surface active agents, may be prepared by treating oil shale with an aromatic compound such as benzene, toluene, etc. in the presence of a Friedel Crafts catalyst such as aluminum chloride at temperatures up to the reflux temperature of the aromatic compound. Thereaft |
| 4414380 |
Unsubstituted biphenylene as a cross-linking monomer |
November 8, 1983 |
| Step-growth polymers can be prepared by reacting a mixture of diphenylether or di(phenoxyphenyl)sulfone with biphenylene and a phthaloyl halide in the presence of a Friedel-Crafts acylating catalyst. These polymers can be cured by heating in the range 300.degree.-340.degree. C., with |
