Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1997018252) LOW TEMPERATURE PROCESS FOR MAKING POLYURETHANEUREAS AND PRODUCTS THEREOF
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018252 International Application No.: PCT/US1996/018142
Publication Date: 22.05.1997 International Filing Date: 13.11.1996
IPC:
C08G 18/08 (2006.01) ,C08G 18/10 (2006.01) ,D01F 6/70 (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
18
Polymeric products of isocyanates or isothiocyanates
06
with compounds having active hydrogen
08
Processes
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
18
Polymeric products of isocyanates or isothiocyanates
06
with compounds having active hydrogen
08
Processes
10
Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
D TEXTILES; PAPER
01
NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
F
CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
6
Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
58
from homopolycondensation products
70
from polyurethanes
Applicants:
E.I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street Wilmington, DE 19898, US (AllExceptUS)
ROACH, David, H. [US/US]; US (UsOnly)
Inventors:
ROACH, David, H.; US
Agent:
SCOTT, Patricia, M.; E.I. du Pont de Nemours and Company Legal Patent Records Center 1007 Market Street Wilmington, DE 19898, US
Priority Data:
60/006,86716.11.1995US
Title (EN) LOW TEMPERATURE PROCESS FOR MAKING POLYURETHANEUREAS AND PRODUCTS THEREOF
(FR) PROCEDE DE FABRICATION DE POLYURETHANUREES A BASSE TEMPERATURE ET DE LEURS PRODUITS
Abstract:
(EN) A process for making polyurethaneureas using cryogenic mixing is disclosed. Such polyurethaneureas are useful for making spandex and, ultimately, various types of clothing. The process involves cooling an isocyanate prepolymer or the like to a temperature of less than about -100 °C, forming a powder from said isocyanate prepolymer, adding at least one chain extender and/or chain terminator, and warming said powder to at least about room temperature to produce a polyurethaneurea. Such polyurethaneureas are useful for making spandex and, ultimately, various types of clothing.
(FR) L'invention concerne un procédé de fabrication de polyuréthanurées au moyen d'un mélange cryogénique. Ces polyuréthanurées sont utiles pour fabriquer du spandex et différents types de vêtements. Ce procédé consiste à refroidir un prépolymère d'isocyanate, par exemple, à une température inférieure à -100 °C, à former une poudre à partir dudit prépolymère d'isocyanate, à ajouter au moins un allongeur de chaîne et/ou un terminateur de chaîne et à réchauffer ladite poudre à au moins environ la température ambiante, afin d'obtenir une polyuréthanurée. Ces polyuréthanurées sont utiles pour fabriquer du spandex et différents types de vêtements.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0804496US5879596JPH10512919