UV-absorbing monomer and polymers thereof

• US 4,612,358 A
• Filed: 10/16/1985
• Issued: 09/16/1986
• Est. Priority Date: 10/27/1984
• Status: Expired due to Term

• Current Assignee: ROHM Co., Ltd.
• Original Assignee: ROHM Co., Ltd.
• Inventors: Liebler, Ralf, Schroeder, Guenter, Besecke, Siegmund, Hohage, Heinz-Juergen
• Primary Examiner(s): Wong, Jr., Harry
• Application Number:
  US06/787,660
• Time in Patent Office: 335 Days
• Field of Search: 526/259
• US Class Current: 526/259
• CPC Class Codes: C07D 249/20 with aryl radicals directly attached in position 2
• CPC Class Codes: C08K 5/3475 condensed with carbocyclic rings

Abstract

UV absorbing compounds, susceptible to free-radical polymerization, of the formula ##STR1## wherein R is alkyl having from 4 to 12 carbon atoms of which not more than 6 are present in a linear chain, and in particular 2-(2'"'"'-hydroxy-3'"'"'-methacrylamidomethyl-5'"'"'-tert-octylphenyl)benzotriazole, and polymers thereof.

Claims

1. A method for making an ultra-violet-absorbing copolymer which comprises free radically polymerizing at least 0.05 part by weight of a compound of the formula ##STR5## wherein R is alkyl having from 4 to 12 carbon atoms not more than 6 of which are present in an unbranched chain, with up to 99.95 parts by weight of at least one other vinyl or vinylidene monomer.

2. A method as in claim 1 wherein said other monomer consists of 50 percent or more by weight of a methacrylic monomer or styrene.

3. A method as in claim 1 wherein said other monomer or monomers are selected such that a polymer having a Vicat softening point over 100°

C. is formed.

4. An ultra-violet-absorbing polymer made by the method of claim 1.

5. An ultra-violet-absorbing polymer made by the method of claim 2.

6. An ultra-violet absorbing polymer made by the method of claim 3.