1
U.S. Government:Jahrbuch Der Deutschen Shakespeare-Gesellschaft (5 ) - Paperback
ISBN: 1234545829
[EAN: 9781234545826], Neubuch, [PU: RareBooksClub], U.S. GOVERNMENT,SUBJECTS, This item is printed on demand. Paperback. 24 pages. Original publisher: Washington, DC : National Aeronautic… More...
[EAN: 9781234545826], Neubuch, [PU: RareBooksClub], U.S. GOVERNMENT,SUBJECTS, This item is printed on demand. Paperback. 24 pages. Original publisher: Washington, DC : National Aeronautics and Space Administration, 1991 OCLC Number: (OCoLC)645463443 Subject: Heterocyclic chemistry. Excerpt: . . . LAR 14643-1-CU-12-PATENT APPLICATION reaction mixture was diluted with 25 ml DMAc ( 5. 7 solids w w ) after approximately 0. 75 hour. The viscous solution was precipitated in a water acetic acid ( 10 1 ) mixture, washed successively in hot water and methanol and dried at 110 C to provide a light brown polymer ( 2. 48 g, 73 5 yield ) with a Tg of 276 C. The inherent viscosity of a 0. 5 solution in DMAc at 25 C was 1. 99 dL g. Unoriented thin films cast from a DMAc solution gave tensile strength, tensile modulus, and elongation at 23 C of 19. 4 ksi, 598 ksi, and 13. 1 respectively. The resulting polymer had the following structural repeat unit: Ft 10 15 Example 4 Into a 100 ml three necked round bottom flask equipped with nitrogen inlet, thermometer, mechanical stirrer, and Dean Stark trap was placed 5, 5 -carbonyl-bis 2-( 4-hydroxyphenyl ) benzimidazole ( 2. 5651 g, 5. 7 mmol ), 4, 4 -2O difluordbenzophenone ( 1. 2537 g, 5. 7 mmol ), pulverized anhydrous potassium carbonate ( 2. 0686 g, 15. 0 mmol ), dry DMAc ( 18. 5 ml, 18 solids w w ) and toluene ( 45 ml ). The mixture was heated to 140 -150 C for 3. 5 hours and then heated to 155 -160 C. After 1. 75 hours the viscous reaction mixture was diluted with 18 ml DMAc ( 10 solids w w ) and stirring continued 25 at 155 -160 C. The viscous reaction mixture was diluted with 20 ml DMAc ( 6. 7 solids w w ) after 0. 25 hour. Stirring was continued for 0. 5 hour at 160 C and the reaction mixture was cooled. The viscous solution was precipitated in a water acetic acid ( 10 1 ) mixture, washed successively in hot water and methanol and dried at 110 C to provide a pale yellow polymer 30 ( 3. 03 g, 84 yield ) with no observable Tg by differential scanning This item ships from La Vergne,TN.<
- NEW BOOK Shipping costs: EUR 11.60 BuySomeBooks, Las Vegas, NV, U.S.A. [52360437] [Rating: 5 (von 5)]
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U.S. Government:
Jahrbuch Der Deutschen Shakespeare-Gesellschaft (5 )
- Paperback1991, ISBN: 9781234545826
RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 24 pages. Original publisher: Washington, DC : National Aeronautics and Space Administration, 1991 OCLC Number:… More...
RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 24 pages. Original publisher: Washington, DC : National Aeronautics and Space Administration, 1991 OCLC Number: (OCoLC)645463443 Subject: Heterocyclic chemistry. Excerpt: . . . LAR 14643-1-CU-12-PATENT APPLICATION reaction mixture was diluted with 25 ml DMAc ( 5. 7 solids w w ) after approximately 0. 75 hour. The viscous solution was precipitated in a water acetic acid ( 10 1 ) mixture, washed successively in hot water and methanol and dried at 110 C to provide a light brown polymer ( 2. 48 g, 73 5 yield ) with a Tg of 276 C. The inherent viscosity of a 0. 5 solution in DMAc at 25 C was 1. 99 dL g. Unoriented thin films cast from a DMAc solution gave tensile strength, tensile modulus, and elongation at 23 C of 19. 4 ksi, 598 ksi, and 13. 1 respectively. The resulting polymer had the following structural repeat unit: Ft 10 15 Example 4 Into a 100 ml three necked round bottom flask equipped with nitrogen inlet, thermometer, mechanical stirrer, and Dean Stark trap was placed 5, 5 -carbonyl-bis 2-( 4-hydroxyphenyl ) benzimidazole ( 2. 5651 g, 5. 7 mmol ), 4, 4 -2O difluordbenzophenone ( 1. 2537 g, 5. 7 mmol ), pulverized anhydrous potassium carbonate ( 2. 0686 g, 15. 0 mmol ), dry DMAc ( 18. 5 ml, 18 solids w w ) and toluene ( 45 ml ). The mixture was heated to 140 -150 C for 3. 5 hours and then heated to 155 -160 C. After 1. 75 hours the viscous reaction mixture was diluted with 18 ml DMAc ( 10 solids w w ) and stirring continued 25 at 155 -160 C. The viscous reaction mixture was diluted with 20 ml DMAc ( 6. 7 solids w w ) after 0. 25 hour. Stirring was continued for 0. 5 hour at 160 C and the reaction mixture was cooled. The viscous solution was precipitated in a water acetic acid ( 10 1 ) mixture, washed successively in hot water and methanol and dried at 110 C to provide a pale yellow polymer 30 ( 3. 03 g, 84 yield ) with no observable Tg by differential scanning This item ships from La Vergne,TN., RareBooksClub<
- Shipping costs: EUR 3.12 BuySomeBooks
3
Jahrbuch Der Deutschen Shakespeare-Gesellschaft (5 )
- Paperback1991
ISBN: 9781234545826
RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 24 pages. Original publisher: Washington, DC : National Aeronautics and Space Administration, 1991 OCLC Number:… More...
RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 24 pages. Original publisher: Washington, DC : National Aeronautics and Space Administration, 1991 OCLC Number: (OCoLC)645463443 Subject: Heterocyclic chemistry. Excerpt: . . . LAR 14643-1-CU-12-PATENT APPLICATION reaction mixture was diluted with 25 ml DMAc ( 5. 7 solids w w ) after approximately 0. 75 hour. The viscous solution was precipitated in a water acetic acid ( 10 1 ) mixture, washed successively in hot water and methanol and dried at 110 C to provide a light brown polymer ( 2. 48 g, 73 5 yield ) with a Tg of 276 C. The inherent viscosity of a 0. 5 solution in DMAc at 25 C was 1. 99 dL g. Unoriented thin films cast from a DMAc solution gave tensile strength, tensile modulus, and elongation at 23 C of 19. 4 ksi, 598 ksi, and 13. 1 respectively. The resulting polymer had the following structural repeat unit: Ft 10 15 Example 4 Into a 100 ml three necked round bottom flask equipped with nitrogen inlet, thermometer, mechanical stirrer, and Dean Stark trap was placed 5, 5 -carbonyl-bis 2-( 4-hydroxyphenyl ) benzimidazole ( 2. 5651 g, 5. 7 mmol ), 4, 4 -2O difluordbenzophenone ( 1. 2537 g, 5. 7 mmol ), pulverized anhydrous potassium carbonate ( 2. 0686 g, 15. 0 mmol ), dry DMAc ( 18. 5 ml, 18 solids w w ) and toluene ( 45 ml ). The mixture was heated to 140 -150 C for 3. 5 hours and then heated to 155 -160 C. After 1. 75 hours the viscous reaction mixture was diluted with 18 ml DMAc ( 10 solids w w ) and stirring continued 25 at 155 -160 C. The viscous reaction mixture was diluted with 20 ml DMAc ( 6. 7 solids w w ) after 0. 25 hour. Stirring was continued for 0. 5 hour at 160 C and the reaction mixture was cooled. The viscous solution was precipitated in a water acetic acid ( 10 1 ) mixture, washed successively in hot water and methanol and dried at 110 C to provide a pale yellow polymer 30 ( 3. 03 g, 84 yield ) with no observable Tg by differential scanning This item ships from La Vergne,TN., RareBooksClub<
- Shipping costs: EUR 10.76 BuySomeBooks
4
Jahrbuch Der Deutschen Shakespeare-Gesellschaft (5 )
- PaperbackISBN: 1234545829
[EAN: 9781234545826], Neubuch, [PU: RareBooksClub], SUBJECTS, This item is printed on demand. Paperback. 24 pages. Original publisher: Washington, DC : National Aeronautics and Space Admi… More...
[EAN: 9781234545826], Neubuch, [PU: RareBooksClub], SUBJECTS, This item is printed on demand. Paperback. 24 pages. Original publisher: Washington, DC : National Aeronautics and Space Administration, 1991 OCLC Number: (OCoLC)645463443 Subject: Heterocyclic chemistry. Excerpt: . . . LAR 14643-1-CU-12-PATENT APPLICATION reaction mixture was diluted with 25 ml DMAc ( 5. 7 solids w w ) after approximately 0. 75 hour. The viscous solution was precipitated in a water acetic acid ( 10 1 ) mixture, washed successively in hot water and methanol and dried at 110 C to provide a light brown polymer ( 2. 48 g, 73 5 yield ) with a Tg of 276 C. The inherent viscosity of a 0. 5 solution in DMAc at 25 C was 1. 99 dL g. Unoriented thin films cast from a DMAc solution gave tensile strength, tensile modulus, and elongation at 23 C of 19. 4 ksi, 598 ksi, and 13. 1 respectively. The resulting polymer had the following structural repeat unit: Ft 10 15 Example 4 Into a 100 ml three necked round bottom flask equipped with nitrogen inlet, thermometer, mechanical stirrer, and Dean Stark trap was placed 5, 5 -carbonyl-bis 2-( 4-hydroxyphenyl ) benzimidazole ( 2. 5651 g, 5. 7 mmol ), 4, 4 -2O difluordbenzophenone ( 1. 2537 g, 5. 7 mmol ), pulverized anhydrous potassium carbonate ( 2. 0686 g, 15. 0 mmol ), dry DMAc ( 18. 5 ml, 18 solids w w ) and toluene ( 45 ml ). The mixture was heated to 140 -150 C for 3. 5 hours and then heated to 155 -160 C. After 1. 75 hours the viscous reaction mixture was diluted with 18 ml DMAc ( 10 solids w w ) and stirring continued 25 at 155 -160 C. The viscous reaction mixture was diluted with 20 ml DMAc ( 6. 7 solids w w ) after 0. 25 hour. Stirring was continued for 0. 5 hour at 160 C and the reaction mixture was cooled. The viscous solution was precipitated in a water acetic acid ( 10 1 ) mixture, washed successively in hot water and methanol and dried at 110 C to provide a pale yellow polymer 30 ( 3. 03 g, 84 yield ) with no observable Tg by differential scanning This item ships from La Vergne,TN.<
- NEW BOOK Shipping costs: EUR 124.96 BuySomeBooks, Las Vegas, NV, U.S.A. [52360437] [Rating: 5 (von 5)]
5
Jahrbuch Der Deutschen Shakespeare-Gesellschaft (5 )
- new bookISBN: 9781234545826
U.S. Government, Deutsche Shakespeare-Gesellschaft, Paperback, English-language edition, Pub by General Books LLC Books, , Jahrbuch-Der-Deutschen-Shakespeare-Gesellschaft~~U-S-Government,… More...
U.S. Government, Deutsche Shakespeare-Gesellschaft, Paperback, English-language edition, Pub by General Books LLC Books, , Jahrbuch-Der-Deutschen-Shakespeare-Gesellschaft~~U-S-Government, , , , , , , , , , General Books LLC<
- MPN: , SKU 9781234545826 Shipping costs:zzgl. Versandkosten, plus shipping costs
