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US 2018/0002285 A1Published application
Sterically hindered alkyl and oxyalkyl amine light stabilizers
Assignee3M Innovative Properties Company
InventorsThomas P. Klun, Mark A. Roehrig, Joseph C. Spagnola, Alan K. Nachtigal, Charles J. Hoy, Richard J. Pokorny, William J. Hunt, Jason T. Petrin, Paul B. Armstrong, Suresh Iyer
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Abstract
Compounds having hindered amine and oxyalkyl amine light stabilizers can mitigate the adverse effects of actinic radiation, such as visible and ultraviolet light, on polymers and copolymers. Polymers and copolymers derived from such compounds. Articles, such as coated articles and molded articles, containing such polymers or compounds.
Claims16
A compound having the structure of Formula (I):
- wherein
- X is
- R1 is alkyl,
- R2 is alkyl,
- R3 is H or alkyl,
- R4 is H or alkyl,
- R5 is H or alkyl,
- R6 is H or alkyl,
- R7 is alkyl, and
- R8 is alkyl;
- A is alkyl or oxyalkyl;
- Ri is a residue of a multi-isocyanate;
- E1 is O or NR′,
- R′ is H or C1 to C4 alkyl;
- each Q is independently a connecting group having a valence of p+1;
- each ACRYL is independently an (alk)acryl functional group of the formula OC(O)C(Rd)═CH2,
- wherein
- Rd is alkyl or H;
- and
- p is the number of ACRYL groups attached to Q, which is from 1 to 6;
- o is the number of
- groups covalently bound to Ri, which is from 1 to 8;
- r is the number of
- groups covalently bound to Ri, which is from 1 to 8;
- q is the number of NCO groups covalently bound to Ri, which is from 0 to 8;
- and the sum of q+o+r is from 2 to 10.
23 more elements
Dependencies are inferred from the claim text.