Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1995-06-07
1997-12-30
Wilson, D. R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
528402, 549511, 568615, 568617, C08G 1828, C08G 1850
Patent
active
057031940
ABSTRACT:
This application is directed to novel fluorinated polymers and prepolymers derived from mono-substituted oxetane monomers having fluorinated alkoxymethylene side-chains and the method of making these compositions. The mono-substituted fluorinated oxetane monomers having fluorinated alkoxymethylene side-chains are prepared in high yield by the reaction of a fluorinated alkoxides with either 3-halomethyl-3-methyloxetane premonomers or aryl sulfonate derivative of 3-hydroxymethyl-3-methyloxetane premonomers. Preparation of a mono-substituted 3-bromomethyl-3-methyloxetane premonomer via a simple, high yield process amenable to commercial scaleup is also disclosed. The fluorinated oxetane monomers of this invention can be readily homo/co-polymerized in the presence of a Lewis acid and polyhydroxy compounds to obtain hydroxy-terminated polyether prepolymers having fluorinated alkoxymethylene side chains. Additionally, the fluorinated oxetane monomers can be copolymerized with non-fluorinated monomers such as tetrahydrofuran to give polyether prepolymers with improved hydrocarbon compatibility. These prepolymers are polydisperse and exhibit number average molecular weights from 5,000 to about 50,000. These prepolymers are amorphous oils with primary hydroxy end-groups and thus function efficiently as the soft block for the synthesis of a variety of thermoset/thermoplastic elastomers and plastics having the characteristics of very low surface energy, high hydrophobicity, low glasss transition temperature and low coefficient of friction. The polyurethanes derived from the prepolymers of this invention are elastomeric and, in addition to the above characteristics, exhibit high moisture resistance, high tear strength and excellent adhesion to a variety of substrates.
REFERENCES:
patent: 2895921 (1959-07-01), Price
patent: 2895924 (1959-07-01), Hudy
patent: 2895931 (1959-07-01), Klug
patent: 2905647 (1959-09-01), Goddu
patent: 2909492 (1959-10-01), Schilling
patent: 3096344 (1963-07-01), Case
patent: 3210298 (1965-10-01), Weissermerl et al.
patent: 3347801 (1967-10-01), Srogryn
patent: 3576802 (1971-04-01), Luders
patent: 4097048 (1978-06-01), Falk et al.
patent: 4393199 (1983-07-01), Manser
patent: 4414384 (1983-11-01), Berkowitz et al.
patent: 4483978 (1984-11-01), Manser
patent: 4675452 (1987-06-01), Lagow et al.
patent: 4707540 (1987-11-01), Manser et al.
patent: 4764586 (1988-08-01), Manser et al.
patent: 4782130 (1988-11-01), Re
patent: 4827042 (1989-05-01), Lagow et al.
patent: 4847427 (1989-07-01), Nappa
patent: 4864040 (1989-09-01), Oshaka et al.
patent: 4898981 (1990-02-01), Falk
patent: 4946992 (1990-08-01), Falk et al.
patent: 4954472 (1990-09-01), Scott et al.
patent: 4965342 (1990-10-01), Vandenberg et al.
patent: 4970295 (1990-11-01), Schuchardt
patent: 4988797 (1991-01-01), Wardle et al.
patent: 5000830 (1991-03-01), Marchionni
patent: 5041517 (1991-08-01), Vu et al.
patent: 5045624 (1991-09-01), Falk
patent: 5097048 (1992-03-01), Falk
patent: 5240523 (1993-08-01), Willer
patent: 5277944 (1994-01-01), Holzer et al.
W. A. Lee, et al., "The Glass Transition Temperature of Polymers", Polymer Handbook, 2nd ed., Brandrup, et.al. ed., Johnm Wiley & Sons, New York, p. III-157, (1975).
Archibald Thomas G.
Malik Aslam A.
Aerojet-General Corporation
Wilson D. R.
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