Claims
- 1. A method for the preparation of a fluorescent thermal transfer sheet comprising:
- (a) forming a solution of a mixture comprising at least one acidic monomer having the basic formula: ##STR3## where R.sub.1 =H, CH.sub.3 and R.sub.2 is COOH, R.sub.3 COOH wherein R.sub.3 is C.sub.1 -C.sub.8, and at least one basic monomer having the basic formula: ##STR4## wherein R.sub.4 is H, CH.sub.3 and R.sub.5 is OH, R.sub.6 OH wherein R.sub.6 is C.sub.1 -C.sub.8 and at least one fluorescent dye;
- (b) forming an emulsion of the solution formed in step (a);
- (c) adding at least one vinyl monomer to the emulsified solution of step (b);
- (d) adding a reducing agent to an initiator
- (e) polymerizing the solution of step (c) at room temperature by adding the initiator from step (d) to said neutralized emulsion; and
- (f) coating the polymerized mixture from step (e) onto a polyester film.
- 2. A method according to claim 1 wherein said polyester film is Mylar.
- 3. A method according to claims 1 wherein the number moles of said basic monomer is equal to or greater than the total number of moles of the combination of said fluorescent dye and said acidic monomer.
- 4. A method for forming a fluorescent thermal transfer sheet, comprising:
- (a) forming a neutralized emulsion from a mixture comprising at least one acidic monomer and at least one fluorescent dye by (i) mixing together at least one acidic monomer having the basic formula: ##STR5## where R.sub.1 .dbd.H, CH.sub.3 and R.sub.2 is COOH, R.sub.3 COOH wherein R.sub.3 is C.sub.1 -C.sub.8 and at least one fluorescent dye; (ii) adding at least one basic monomer to the mixture of step (i), the basic monomer having the basic formula: ##STR6## wherein R.sub.4 is H, CH.sub.3 and R.sub.5 is OH, R.sub.6 OH wherein R.sub.6 is C.sub.1 -C.sub.8 ; and (iii) adding an emulsifier to the mixture of step (ii) to form an emulsion;
- (b) polymerizing said neutralized emulsion of step (a); and
- (c) coating said polymerized mixture onto a support member.
- 5. A method according to claim 4 wherein said support member is a polyester film.
- 6. A method according to claim 5 wherein said polyester film is Mylar.
- 7. A fluorescent thermal transfer sheet prepared by the method as described in claim 4.
Parent Case Info
This application is a division of Ser. No. 06/818,937 filed 01/15/87, now U.S. Pat. No. 4,657,697.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0054598 |
Sep 1982 |
JPX |
Divisions (1)
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Number |
Date |
Country |
Parent |
818937 |
Jan 1986 |
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