Ortho ester-based surfactant, its preparation and use

Details Ortho ester-based surfactant, its preparation and use Ortho ester-based surfactant, its preparation and use

2006-02-21

2006-02-21

Keys, Rosalynd (Department: 1621)

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

Organic compounds

Oxygen containing

C568S913000, C568S918000, C134S010000, C210S708000, C210S774000, C510S109000, C510S506000, C008S404000, C514S723000

Reexamination Certificate

active

07002045

ABSTRACT:
The present invention relates to a new ortho ester-based surfactant, where the hydrophobic and hydrophilic parts are connected by ortho ester linkages to the molecule. The ortho ester has the formulawhere R is hydrogen or an aliphatic group with 1–7 carbon atoms; R1is hydrogen or an alkyl group with 1–5 carbon atoms; A1is an alkyleneoxy group with 2–4 carbon atoms, the number of ethyleneoxy groups being at least 50% of the total number of alkyleneoxy groups; n1is a number between 1 and 30; R2is an aliphatic group with 5–22 carbon atoms; A2is an alkyleneoxy group with 3–4 carbon atoms; n2is a number between 0–30, provided that when R2is an aliphatic group with 5–6 carbon atoms n2is at least 1; R3is selected from the group consisting of (A1)n1R1, (A2)n2R2and an alkyl group with 1–6 carbon atoms, where A1, n1, R1, A2, n2and R2have the same meaning as mentioned above; or a di- or polycondensate via any of the free hydroxy groups of the ortho ester. The ortho ester surfactants are stable in alkaline solutions, but are readily hydrolysed in acidic solutions to yield products that are not surface active. They are suitable to be used as emulsifiers or dispersants.

REFERENCES:
patent: 3903006 (1975-09-01), Elliott et al.
patent: 4450087 (1984-05-01), Askew et al.

Affiliated with

Also associated with

Rating

Ortho ester-based surfactant, its preparation and use does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ortho ester-based surfactant, its preparation and use, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ortho ester-based surfactant, its preparation and use will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3666198