Water compatible sterically hindered alkoxyamines and...

Details Water compatible sterically hindered alkoxyamines and... Water compatible sterically hindered alkoxyamines and...

2005-05-25

2009-06-23

Aulakh, Charanjit S (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C524S099000, C546S242000

Reexamination Certificate

active

07550599

ABSTRACT:
Sterically hindered alkoxyamine and hydroxy substituted alkoxyamine stabilizer compounds are made water compatible via certain backbones with affinity towards water. The sterically hindered amines are for example of the formulawhere for example E and E′ are 2-hydroxycyclohexyloxy, 2-hydroxy-2-methylpropoxy, benzyloxy, methoxy, propoxy, hexyloxy, heptyloxy, octyloxy or cyclohexyloxy, Rxis for example —NH2+CH2CH2OH Cl−, —NH3+−OAc, ═NOH, —NHCH(CH3)COO−K+, —NHCH2CH2N(CH3)2+−OAc, —NHCH2CH2SO3−K+, —NHCH(COO−K+)CH2CH2SCH3, —NHCH2COO−K+, —OCH(CH3)COO−K+, —OCH2CH2N(CH3)2+−OAc, —OCH2CH2SO3−K+, —OCH(COO−K+)CH2CH2SCH3or —OCH2COO31K+, and where R5comprises repeating units of —(OCH2CH2)—, —(OCH2CH2(CH3))—, —(CH2CHCOOH)—, —(CH2C(CH3)COOH)—, —(CH2CHCOOCH3)—, —(NHCH2CH2)—, —(CH2CHOH)—, —(CH2CHCONH2)— or —(CH2CH(NHCOH))—. These compounds are particularly effective in stabilizing aqueous polymer systems against the deleterious effects of oxidative, thermal and actinic radiation. The compounds are effective for example in stabilizing water borne coatings, aqueous inks, aqueous ink jet media and photocured aqueous systems.

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