Claims
- 1. A process for preparing colored vinyl polymer particles which comprises suspension-polymerizing, dispersion-polymerizing or emulsion polymerizing:
- (A) 100 parts by weight of a vinyl polymerizable monomer, and
- (B) 0.1 to 99.9 parts by weight of a polymerizable dye prepared by reacting a (meth)acryloyl compound having a group reactive with an active hydrogen selected from the group consisting of (meth)acryloyl chloride, (meth)acryloyl isocyanate, isocyanatoethyl (meth)acrylate, ethoxalyloxyethyl (meth)acrylate and 2-vinylazlactone, with a dye represented by the formula: ##STR18## wherein R.sub.1 and R.sub.2, which are the same or different, represent a group having the formula: ##STR19## wherein R.sub.3 represents --(CH.sub.2)m-NH.sub.2, or [--(CH.sub.2),-OH]--(CH.sub.2)m-OH, R.sub.4 represents a hydrogen atom, an alkyl group, a cycloalkyl group or an allyl group, n is an integer of 1 to 5 and m is 0 or an integer of 1 to 5, and X and Y, which are different, represent --OH or --NHR.sub.1,
- in the presence of a polymerization initiator, and a color difference between the dye (1) to (6) and the obtained colored vinyl polymer particles is within .+-.3nm as measured by absorption spectrum.
- 2. The process according to claim 1 wherein a reaction of the dye (1) to (6) and (meth)acryloyl chloride is carried out by dissolving the dyes in a suitable solvent followed by adding (meth)acryloyl chloride thereto in the presence of an tertiary amine.
- 3. The process according to claim 2 wherein said tertiary amine includes triethylamine, benzyldimethylamine or diazabicyclooctadecane.
- 4. The process according to claim 1 wherein a reaction of the dye (1) to (6) with (meth)acryloyl isocyanate, isocyanatoethyl (meth)acrylate, ethoxalyloxyethyl (meth)acrylate or 2-vinylazlactone takes place by simply mixing the both.
- 5. The process according to claim 1 wherein said polymerization initiator includes an azo compound and a peroxide.
Priority Claims (1)
Number |
Date |
Country |
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63-167973 |
Jul 1988 |
JPX |
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RELATED APPLICATION
The present invention is a continuation of now abandoned application, Ser. No. 07/587,731, filed Sep. 25, 1990, which in turn is a continuation-in-part application based on U.S. patent application Ser. No. 07/376,028, filed Jul. 6, 1989 both applications being abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3637596 |
Gulbins |
Jan 1972 |
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4943617 |
Etzbach |
Jul 1990 |
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Foreign Referenced Citations (2)
Number |
Date |
Country |
1407670 |
Sep 1975 |
GBX |
173410 |
Aug 1965 |
SUX |
Continuations (1)
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Number |
Date |
Country |
Parent |
587731 |
Sep 1990 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
376028 |
Jul 1989 |
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