Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1982-02-16
1984-03-27
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
106243, 10628723, 428278, 428292, 428294, 523203, 523211, 524 57, 524111, 524232, 524312, 524313, 524370, 524377, 524583, 252312, C08K 340, C08L 9106, B32B 1710, B32B 900
Patent
active
044395582
ABSTRACT:
An aqueous emulsion of an organic peroxide that is liquid at a temperature of 20.degree. C. and that is insoluble or has limited solubility in water is provided that has improved shelf-stability, shear-stability and process stability and has good dilutability and has a particle size of around 1.5 microns or less. The emulsion has from about 1 weight percent of the emulsion to about 70 weight percent of the emulsion of an organic peroxide that is a liquid at 20.degree. C. and in particular that has a half-life exceeding 60 hours at 212.degree. F. (100.degree. C.) and 20 minutes at 300.degree. F. (149.degree. C.) The emulsion also has about 0.005 to about 15 weight percent of the emulsion of a nonionic emulsifier blend. The emulsifier blend has three emulsifiers selected from polyalkylene glycol ethers, dialkylaryl polyether alcohols, and polyoxy-propylene-polyoxyethylene condensates and the like nonionic emulsifiers having a particular HLB range for each of the three emulsifiers. The remaining weight percent of the emulsion is water.
The method of preparing the aqueous emulsion involves the addition of the emulsifier blend to the liquid peroxide. One of the emulsifiers is split into two portions for the addition.
The aqueous organic peroxide-containing emulsion is incorporated into a sizing composition for treating glass fibers to produce treated glass fibers for use as reinforcement in polymers.
REFERENCES:
patent: 3484223 (1969-12-01), Vanderbilt et al.
patent: 3490936 (1970-01-01), Cole et al.
patent: 3635834 (1972-01-01), Cilento et al.
patent: 3849148 (1974-11-01), Temple
patent: 4009132 (1977-02-01), Furukawa et al.
Tamosauskas Albert E.
Temple Chester S.
Bleutge John C.
Lilling Herbert J.
PPG Industries Inc.
Stachel Kenneth J.
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