Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a solution blend of a polybensimidazole (PBI) and a polyetherketoneketone (PEKK).SOLUTION: The PBI is mixed with sulfuric acid at a temperature between 40-80°C for 30 minutes to 2 hours to produce a PBI solution, and the PBI solution is cooled to room temperature to form a cooled PBI solution. Then PEKK is added to the cooled PBI solution to form a mixture and that mixture is stirred from 30 minutes to 2 hours at room temperature to form a stirred mixture. The stirred mixture is poured into an excess of water being stirred swiftly to form an aqueous mixture. The aqueous mixture is filtered to isolate the blend. The blend is washed with water and dried. The resulting blend can yield a blend in all proportion from 1/99 PBI/PEKK to 99/1 PBI/PEKK.
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method for manufacturing a solution blend of polybenzimidazole (PBI) and polyether ketone ketone (PEKK).SOLUTION: A PBI solution is manufactured by mixing PBI with sulfuric acid at a temperature of 40°C to 80°C over a period of 30 minutes to 2 hours, and a cooled PBI solution is subsequently prepared by cooling the former eventually at room temperature. Next, an admixture is prepared by adding PEKK to the cooled PBI solution, and an agitated admixture is prepared by agitating the resulting admixture at room temperature over a period of 30 minutes to 2 hours. A hydrous admixture is prepared by quickly pouring, into an excess of water, the resulting agitated admixture while being still agitated. A blend is manufactured by filtering the resulting hydrous admixture. This blend is washed with water and dried. The obtained blend is producible as blends having any conceivable PBI/PEKK ratios from 1/99 to 99/1.
Abstract:
A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.
Abstract:
A polymer blend comprises PBI, PAEK, and PEI. A method of making the foregoing blend comprises the steps of intimately blending PBI, PAEK, and PEI by dissolving PBI, PAEK, and PEI in a strong acid or melt blending PBI, PAEK, and PEI.
Abstract:
A coating is a mixture of polybenzimidazole polymer and an epoxy. The coating may further include a primer underlying the coating. The coating may further include an adhesion promoter. A solution includes a polybenzimidazole polymer, an epoxy resin, an initiator, and a carrier solvent. The solution may further include a stabilizer and/or an adhesion promoter.
Abstract:
A pervaporation membrane may be an acid -resistant polybenzidimazole (PBI) membrane. The acid -resistant PBI membrane may be a PBI membrane chemically modified by a process selected from the group consisting of sulfonation , phosphonation cross- linking, N- substitution , and/or combinations thereof. The membrane may be thermally stabilized. A method for the dehydration of an acid material may include the steps of: contacting an acidic aqueous solution with a membrane of an acid resistant polybenzidimazole; taking away a permeate stream rich in water; and taking away a concentrate steam rich in the acid material. The acidic aqueous solution may be acetic acid.
Abstract:
A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.
Abstract:
PBI compositions include solutions comprising PBI and acrylate monomer and coatings comprising PBI and polyacrylate. The solutions may also include polymerization initiator, solvent, co-polymers. The coatings are thermally resistant, electrically insulating (dielectric), and adhesive. The PBI compositions are used in the manufacture of microelectronics and related products. Methods for applying the PBI compositions are also discussed.
Abstract:
A pervaporation membrane may be an acid-resistant polybenzidimazole (PBI) membrane. The acid-resistant PBI membrane may be a PBI membrane chemically modified by a process selected from the group consisting of sulfonation, phosphonation, cross-linking, N-substitution, and/or combinations thereof. The membrane may be thermally stabilized. A method for the dehydration of an acid material may include the steps of: contacting an acidic aqueous solution with a membrane of an acid-resistant polybenzidimazole; taking away a permeate stream rich in water; and taking away a concentrate steam rich in the acid material. The acidic aqueous solution may be acetic acid.