Claims
- 1. A method for manufacturing toner for electrophotography which comprises polymerizing a monomer to give a polymer constituent of said toner in the presence of a coloring agent and an anti-offset agent, said anti-offset agent selected from the group consisting of
- (a) polyolefins having a weight average molecular weight between 1000 and 45,000,
- (b) metal salts of fatty acids,
- (c) esters of fatty acids,
- (d) partially saponified esters of fatty acids,
- (e) higher fatty acids,
- (f) higher alcohols,
- (g) paraffin wax,
- (h) esters of polyalcohols,
- (i) fatty acid amides,
- (j) silicon varnish,
- (k) oligomers of stearylacrylate, and
- (l) oligomers of copolymers containing stearylacrylate,
- wherein said polymer constituent is a homopolymer or copolymer of one or more of the monomers selected from the classes of
- styrenes,
- ethylenically unsaturated mono olefins,
- vinyl halides,
- vinyl esters,
- esters of .alpha.-methylene aliphatic monocarboxylic acids,
- acrylics,
- methacrylics,
- vinyl ethers,
- vinyl ketones,
- N-vinyl compounds,
- vinyl naphthalenes, and
- diolefins
- or condensation polymers of
- (I) polyalcohols with polycarboxylic acids or
- (II) polyamines with polycarboxylic acids.
- 2. The method of claim 1 wherein said polymer constituent is a copolymer of monomers selected from styrenes, methacrylates, maleic acid, terephthalic acids, and diolefins.
- 3. The method of claim 1 wherein said polymer constituent is selected from styrene/n-butylmethacrylate, maleic acid/terephthalic acid and styrene/butadiene copolymers.
- 4. A method according to claim 1, wherein said polymerization step is effected in the presence of a cross-linking agent.
- 5. A method according to claim 1, wherein said polymerization process is effected in the presence of a polymer.
- 6. The method of claim 4 wherein said cross linking agent is selected from aromatic divinyl compounds, diethylenic carboxylic acid esters, divinyl compounds, and trivinyl compounds.
- 7. The method of claim 4 wherein said cross linking agent is selected from divinyl benzene, divinyl naphthalene, diethylene glycol methacrylate, diethylene glycol acrylate, triethylene glycol methacrylate, trimethanol propane trimethacrylate, aryl methacrylate, t-butylaminoethyl methacrylate, tetraethylene glycol dimethacrylate, 1,3-butanediol dimethacrylate, N,N-divinyl aniline, divinyl ether, divinyl sulfide, and divinyl sulfone.
- 8. The method of claim 4 wherein said cross linking agent is selected from a polyalcohol having at least three hydroxyl groups, a polyamine having at least three amino groups and a polycarboxylic acid having at least three carboxylic acid groups.
- 9. The method of claim 4 wherein said cross linking agent is selected from glycerine, trimethanol propane, pentaerythritol, 1,2,3-triamino propane, diethylene triamine, 3,3-diamino benzidine, trimellitic acid and pyromellitic acid.
- 10. The toner composition comprising the product of the process of claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
54-162843 |
Dec 1979 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 215,416, filed Dec. 11, 1980 abandoned, which in turn, claims the benefit of the priority of Japanese Application No. 162843/79 filed Dec. 17, 1979.
US Referenced Citations (7)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2815093 |
Oct 1978 |
DEX |
Continuations (1)
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Number |
Date |
Country |
Parent |
215416 |
Dec 1980 |
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