Propylene allyl glycidyl ether copolymers

Propylene Oxide-Allyl Glycidyl Ether Copolymer (PO, GPO).99... 

Pare . See Propylene oxide/allyl glycidyl ether copolymer... 

Nickel sulfamate aerospace chemical Chlorotrifluoromethane aerospace components Propylene oxide/allyl glycidyl ether copolymer Tetrafluoroethylene/propylene copolymer aerospace gas component Oxygen... 

Propylene oxide/allyl glycidyl ether copolymer dynamically stressed goods N,N -Di-(1,4-dimethylpentyl)-p-phenylenediamine dynamite... 

Table 2. Poly(propylene oxide-ra -allyl glycidyl ether) copolymer (PPO-AGE) obtained with cat 1-9...

These include copolymers of propylene sulphide with 3-10% of allyl glycidyl thioether and which may be considered as a thio-analogue of the propylene oxide-allyl glycidyl ether rubber briefly mentioned in Section 19.5 ... 

Abbreviation for copolymer of propylene oxide and allyl glycidyl ether. 

The only commercially available material in this class, Parel, is a copolymer of propylene oxide and allyl glycidyl ether. 

Practical interest in high-molecular-weight poly (propylene oxide) centers in its potential use as an elastomer (19). Copolymerization of propylene oxide with allyl glycidyl ether gives a copolymer with double bonds suitable for sulfur vulcanization. Table IV shows the properties of elastomers made with a copolymer prepared with a zinc hexacyano-ferrate-acetone-zinc chloride complex. Also shown are the properties of elastomers made from partially crystalline copolymers prepared with zinc diethyl-water catalyst. Of particular interest are the lower room-... 

Manufacture. Propylene oxide is copolymerized with allyl glycidyl ether in an aliphatic, aromatic, or chlorinated hydrocarbon solution using Vandenberg-type catalysts. A complete conversion and a uniform copolymer is obtained containing about 6% of AGE. 

Another commercial application of organoaluminum compounds is as catalysts for the ring-opening polymerization of epoxides to form homopolymers of epichlorohydrin (ECH) and copolymers and terpolymers of ECH, ethylene oxide, propylene oxide, and allyl glycidyl ether.The resulting... 

A number of chlorinated poly(ethers) have practical uses. A common compound from this group is polyepichlorohydrin, [-CH(CH2CI)CH20-]n. Polyepichlorohydrin has practical applications as an elastomer and is used in copolymers with propylene oxide, ethylene oxide, allyl glycidyl ether (1-allyloxy-2,3-epoxypropane), etc. Another example is poly oxy[2,2 -bis(chloromethyl)-1,3-propandiyl] or poly[oxy-1,3-(2,2 -dichloromethyl)propylene], CAS 25323-58-4, which can be used as inert lining material for chemical plant equipment, as adhesive, coating material, etc. This macromolecule can be prepared starting with pentaerythritol in the sequence of reactions shown below ... 

Ethylene/propylene/dicyclopentadiene terpolymer Ethylene-propylene-ethylidene norbornene elastomer, adhesives Epichlorohydrin elastomer Epichlorohydrin/ethylene oxide/allyl glycidyl ether terpolymer Epichlorohydrin/ethylene oxide copolymer Polyisoprene Polyurethane, thermoplastic... 

H NMR spectrum of poly(propylene oxide-ran-allyl glycidyl ether) (PPO-AGE) copolymer obtained with Cat 8 points out to a random copolymer with an AGE content of 10% (Figure 1). 

Figure 2. H NMR spectrum of graft copolymer (propylene oxide-raw-allyl glycidyl ether)-cyclooctene.

Propylene oxide rubbers (PO rubbers) These materials were first announced in 1963 (Gruber et ai, 1963 1964) and are copolymers of propylene oxide with a cure-site monomer (usually allyl glycidyl ether used to a proportion of about 10% of the total monomer). Their structures may be represented by ... 

The polymerization o oxetanes with cationic catalysts has been studied by many investigators. (1.H2) RoseC. ), in particular, first reported the homopolymerization of the parent compound, tri-methylene oxide (TMO), with a Lewis acid catalyst, boron trifluoride. The use of coordination catalysts to polymerize oxetanes has been reported in the patent literature by Vandenberg.W In this work, Vandenberg polymerized oxetanes with the aluminum trialkyl -water-acetylacetone coordination catalyst (referred to as chelate catalyst) that he discovered for epoxide polymerization . This paper describes the homo- and co-polymerization of TMO with these coordination catalysts. Specific TMO copolymers, particularly with unsaturated epoxides such as allyl glycidyl ether (AGE), are shown to provide the basis for a new family o polyether elastomers. These new elastomers are compared with the related propylene oxide-allyl glycidyl ether (PO-AGE) copolymer elastomers. The historical development and general characteristics of polyether elastomers and, in particular, the propylene oxide elastomers, are reviewed below. 

Parel elastomer, a copolymer of propylene oxide and allyl glycidyl ether, has a combination of properties that make it very useful in many rubber applications. It can be vulcanized with a conventional mixture of sulfur and accelerators. The cured elastomer has a low glass transition temperature (approximately -55 to -60 C.), and the excellent dynamic properties of natural rubber. It can be made very stable to high temperature oxidative degradation, and is better than neoprene in this respect, when NBC is added as a stabilizer. 

The discovery of coordinate polymerization of oxirane led to an enormous expansion in the range of polyether structures that could be synthesized. Some of the remarkable synthesis chemistry is outlined in Section III. Coordinate copolymerization further increased the range of polymer structures that could be synthesized in highly controlled ways. Two examples have already been described copolymers of epichlorohydrin and ethylene oxide (71) and of propylene oxide and allyl glycidyl ether (94, 137). The activation energy for copolymerization of epichlorohydrin and maleic anhydride was found to be 14.5 kcal/mol, and the polymerization rate is dependent on temperature and proportional to catalyst concentration (138-140). 

Essentially simultaneously as the above work was being carried out, Bailey (100) developed similar poly (propylene oxide) gumstocks, but used butadiene monoepoxide and similar compounds including allyl glycidyl ether as the comonomer to place pendant unsaturation onto the macromolecular backbone. This copolymer had the following structure, with the parameter a unspecified and n sufficiently high to produce gumstocks rather than low-viscosity liquids. 

This elastomer is a sulfur-vulcanizable copolymer of propylene oxide and allyl glycidyl ether. Its vulcanizates are particularly attractive for dynamic uses, where high resihence, excellent flex life, and flexibility at extremely low temperatures are required. It performs similarly to NR in these applications, but it also has the added advantages of (1) good resistance to aging at high temperatures, (2) good ozone resistance, and (3) moderate resistance to loss of properties in contact with fuels and/or some solvents. The surfaces of this elastomer should be... 

TMO with these coordination catalysts. Specific TMO copolymers, particularly with unsaturated epoxides such as allyl glycidyl ether (AGEJ, are shown to provide the basis for a new family of polyether elastomers. These new elastomers are compared with the related propylene oxide-allyl glycidyl ether (PO-AGE) copolymer elastomers. The historical development and general characteristics o polyether elastomers and, in particular, the propylene oxide elastomers, are reviewed below. 

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