Ultraviolet absorbing copolymers

Patent · Fri Jan 01 00:00:00 EST 1982

OSTI ID:864103

Gupta, Amitava ^[1]; Yavrouian, Andre H ^[2]

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1. Pasadena, CA
2. La Crescenta, CA

Photostable and weather stable absorping copolymers have been prepared from acrylic esters such as methyl methacrylate containing 0.1 to 5% of an 2-hydroxy-allyl benzophenone, preferably the 4,4' dimethoxy derivative thereof. The pendant benzophenone chromophores protect the acrylic backbone and when photoexcited do not degrade the ester side chain, nor abstract hydrogen from the backbone.

• DOE Contract Number: NAS7100
• Assignee: California Institute of Technology (Pasadena, CA)
• Patent Number(s): US 4310650
• OSTI ID: 864103
• Country of Publication: United States
• Language: English

Related Subjects

ultraviolet
absorbing
copolymers
photostable
weather
stable
absorping
prepared
acrylic
esters
methyl
methacrylate
containing
2-hydroxy-allyl
benzophenone
preferably
dimethoxy
derivative
pendant
chromophores
protect
backbone
photoexcited
degrade
ester
chain
nor
hydrogen
methyl methacrylate
/526/428/525/