Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1977-03-22
1978-11-14
Lilling, Herbert J.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
96 86P, 96115R, 260 296PM, 260 312XA, 260 318M, 260 338UA, 260 342, 260 312R, 260 318R, 260 318XA, 526 80, 526317, 526909, C08F 250, C08F 222, C08K 504, C08F23200
Patent
active
041257006
ABSTRACT:
Methyl methacrylate polymer powders especially suitable for making plastisols and organosols are prepared by an improved process comprising stepwise emulsion polymerization in aqueous media in the absence of emulsifiers and surfactants and in such manner that at least most of the monomer added at each step is consumed before the addition of the succeeding portion, followed by isolation of the polymer powder by evaporation of the latex at a temperature that is at least 30.degree. C., preferably 40.degree.-50.degree. C., below the glass transition temperature of the polymer.
REFERENCES:
patent: 2537334 (1951-01-01), De Nie
patent: 4025346 (1977-05-01), Petke et al.
Walbridge et al., Discuss Faraday 42, 294-300, (1966).
Ovchinnikov et al., Trudy, 1972, 51-55, #1.
E. I. Du Pont de Nemours and Company
Lilling Herbert J.
LandOfFree
Preparation of methyl methacrylate polymer powders for use in pl does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Preparation of methyl methacrylate polymer powders for use in pl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of methyl methacrylate polymer powders for use in pl will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1302780