Abstract:
A polymeric, phosphorus-containing composition made by heating, in the presence of an initiator, preferably a free radical initiator, and optionally in the presence of one or more comonomcrs, at least one substituted phosphonylatcd 2,2'-dihydroxyl-1,1'-binaphthalene or at least one substituted 2,2'-dihydroxyl-1,1'-biphenylene.
Abstract:
Included are multiend packages of multicomponent yarns, where the yarn is separable into individual ends upon unwinding. The multicomponent yarn may be a bicomponent yarn, such as a yarn including compositionally different polyesters in a side-by-side or eccentric sheath-core configuration. Uses of such multiend packages are also included.
Abstract:
Disclosed is a method for preparing tertiary amine compounds from primary amines and nitriles in the presence of hydrogen gas and metal catalyst, or metal-containing catalyst composition, at a temperature from about 50°C to about 200°C and at a pressure from about 100 psig to 1500 psig. The primary amines and the nitriles used in the process may be diamines and/or dinitriles, or may be combinations of primary amines and/or nitriles. Also disclosed and novel tertiary amine compounds made by the described method.
Abstract:
Commercially acceptable spandex can be prepared with greater efficiency, improved consistency and at lower costs from a high-solids content polyurethaneurea polymer solution. The polyurethaneurea is prepared using a combination of 4, 4'-MDI and 2,4'-MDI, and an amount of chain extenders and chain terminators such that the polymer solution, prior to spinning, is highly soluble and has an appropriate pre-spun IV and primary amine content.
Abstract:
Disclosed herein is a process for the selective synthesis of triorganophosphite intermediates, including mono- and di-phosphites, from phosphorus trihalides, alcohols and triorganoamines where the alcohol and the triorganoamine are added either (a) separately but concurrently and continuously, (b) separately, concurrently but discontinuously, or (c) separately, discontinuously and in alternating portions of triorganoamine and alcohol.
Abstract:
A catalyst composition and a process for using it to decompose nitrous oxide into nitrogen and oxygen are disclosed. The catalyst composition has surface area of about 1 to about 200m 2 /g after exposure to a calcination temperature of between about 400°C and about 900°C, or about 1 to about 100 m2/g after exposure to a calcination temperature of between about 400°C and about 950°C.
Abstract:
A catalyst composition and a process for using it to decompose nitrous oxide into nitrogen and oxygen are disclosed. The catalyst composition has surface area of about 1 to about 200 m2/g after exposure to a calcination temperature of between about 4000C and about 9000C, or about 1 to about 100 m2/g after exposure to a calcination temperature of between about 400 0C and about 95O°C.
Abstract:
A compact continuous over end take-off creel system (100' ' ') with a tension control apparatus (110-3) permits unwinding of high tack elastomeric threads from multiple thread packages (105). Thread tension is monitored and controlled through a variable speed motor of a driven take-off roll (130) to maintain continuous operation of the creel system by avoiding breakage of elastomeric threads. Separate motors and thread tension sensors (117), optionally in combination with pretensioners (113A), may be used for groups of threads or for individual threads.
Abstract:
The composition 3-alkylated-5,5',6,6',7,7',8,8'-octahydro-2,2'-binaphthols and 3,3'-dialkylated- 5,5',6,6',7,7',8,8'-octahydro-2,2'-binaphthols are disclosed, as well as various processes for making them, all involving the alkylation of 5,5',6,6',7,7',8,8'-octahydro-2,2'-binaphthol.