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1. (WO1997016475) PROCESS FOR MODIFYING ALIPHATIC POLYAMIDES WITH POLYUREA
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/016475 International Application No.: PCT/US1996/016518
Publication Date: 09.05.1997 International Filing Date: 16.10.1996
Chapter 2 Demand Filed: 20.05.1997
IPC:
C08G 69/48 (2006.01) ,C08G 81/00 (2006.01) ,C08L 77/00 (2006.01) ,C08L 77/02 (2006.01) ,C08L 77/06 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
69
Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
48
Polymers modified by chemical after-treatment
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
81
Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
77
Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
77
Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
02
Polyamides derived from omega-amino carboxylic acids or from lactams thereof
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
77
Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
06
Polyamides derived from polyamines and polycarboxylic acids
Applicants:
E.I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street Wilmington, DE 19898, US (AllExceptUS)
TEASLEY, Mark, F. [US/US]; US (UsOnly)
Inventors:
TEASLEY, Mark, F.; US
Agent:
SIEGELL, Barbara, C.; E.I. Du Pont de Nemours and Company Legal Patent Records Center 1007 Market Street Wilmington, DE 19898, US
Priority Data:
60/006,20303.11.1995US
Title (EN) PROCESS FOR MODIFYING ALIPHATIC POLYAMIDES WITH POLYUREA
(FR) PROCEDE DE MODIFICATION DE POLYAMIDES ALIPHATIQUES AVEC DE LA POLYUREE
Abstract:
(EN) The end groups of an aliphatic polyamide may be changed by reacting a polyurea with a molten aliphatic polyamide at temperatures of about 260 °C or more. Carboxyl end groups are controllably converted to amine end groups. This is especially useful for controlling the dyeability of fibers spun from such aliphatic polyamides.
(FR) On peut changer les groupements terminaux d'un polyamide aliphatique en faisant réagir une polyurée avec un polyamide aliphatique en fusion, à des températures d'environ 260 °C ou supérieures. Les groupements terminaux carboxyliques sont convertis, de manière régulable, en groupements terminaux amines. Cela est particulièrement utile pour maîtriser l'aptitude à la teinture de fibres filées à partir de tels polyamides aliphatiques.
Designated States: AL, AM, AU, AZ, BA, BB, BG, BR, BY, CA, CN, CU, CZ, EE, GE, HU, IL, IS, JP, KG, KP, KR, KZ, LC, LK, LR, LT, LV, MD, MG, MK, MN, MX, NO, NZ, PL, RO, RU, SG, SI, SK, TJ, TM, TR, TT, UA, US, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0858475US5977267JPH11514687CA2234343AU1996074341