Photopolymerizable compositions comprising polycarboxysubstituted benzophenone reaction products

• US 3,926,641 A
• Filed: 10/11/1973
• Issued: 12/16/1975
• Est. Priority Date: 11/18/1971
• Status: Expired due to Term

• Current Assignee: George Rosen
• Original Assignee: George Rosen
• Inventors: Rosen, George
• Primary Examiner(s): Smith, Ronald H.
• Application Number:
  US05/405,518
• Time in Patent Office: 796 Days
• Field of Search: 96/115P,115R,84R 204/159.14,159.15,159.23
• US Class Current: 430/284.1
• CPC Class Codes: C08F 2/46 Polymerisation initiated by wave energy or particle radiation
• CPC Class Codes: C08F 283/01 on to unsaturated polyesters C08F283/004 takes precedence
• CPC Class Codes: C08G 63/914 derived from polycarboxylic acids and polyhydroxy compounds
• CPC Class Codes: G03F 7/031 Organic compounds not covered by group G03F7/029
• CPC Class Codes: G03F 7/032 with binders
• CPC Class Codes: G03F 7/038 Macromolecular compounds which are rendered insoluble or differentially wettable G03F7/075 takes precedence; macromolecular azides G03F7/012; macromolecular diazonium compounds G03F7/021
• CPC Class Codes: Y10S 522/904 Monomer or polymer contains initiating group
• CPC Class Codes: Y10S 522/905 Benzophenone group

Abstract

Compounds containing a benzophenone or a substituted benzophenone moiety are (a) autophotopolymerizable, (b) photopolymerizable in compositions with another photoinitiator, or (c) photoinitiating in compositions with another photopolymerizable material.

Claims

1. A PHOTOPOLYMERIZABLE ELEMENT COMPRISING A SUPPORT AND A COATING THEREON OF THE PRODUCT OF THE RECTION OF (1) A HYDROXYL-CONTAINING POLYETHYLENICALLY UNSATURATED ESTER OR AN ISOCYANATE-MODIFIED HYDROXYL-CONTAINING POLYETHYLENICALLY UNSATURATED ESTER WHICH IS THE PRODUCT OF THE REACTION OF (A) AND (2), A POLYCARBOXY-SUBSTITUTED BENZOPHENONE ACID OR AND (2), A POLYCARBOXY-SUBSTITUTED BENZOPHENONE ACID OR ANHYDRIDE HAVING THE FORMULA

2. A photopolymerizable composition consisting of (A) a polyethylenically unsaturated ester and (B) a photoinitiator which consists of the product of the reaction of (1) a hydroxyl-containing polyethylenically unsaturated ester or an isocyanate-modified hydroxyl-containing polyethylenically unsaturated ester which is the product of the reaction of (a) an ethylenically unsaturated acid and (b) a polyhydric alcohol and (2) a polycarboxy-substituted benzophenone acid or anhydride having the formula

3. The composition of claim 2 wherein the ester (A) is a di- or polyacrylate, a di- or polymethacrylate, or a di- or polyitaconate.

4. The composition of claim 2 wherein the ester (A) is an isocyanate-modified di- or polyacrylate, di- or polymethacrylate, or di- or polyitaconate.

5. The composition of claim 2 wherein the ratio of the amount of the ester (A) to the amount of the photoinitiator (B) is about 99:

1 to 10;

90.

6. The Composition of claim 2 wherein the ratio of the amount of the ester (A) to the amount of the photoinitiator (B) is about 30:

70 to 70;

30.