Linear polyalkylene ether glycols of high molecular weight

Details Linear polyalkylene ether glycols of high molecular weight Linear polyalkylene ether glycols of high molecular weight

1979-07-13

1981-06-23

Mars, Howard T.

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

Organic compounds

Oxygen containing

568607, 568608, 568609, 568611, 568623, 568616, 568619, 528419, 528425, 521178, 252316, 252352, 252358, C07C 4311

Patent

active

042752442

ABSTRACT:
Linear polypropylene ether glycols of high molecular weight are made by reacting a linear polypropylene ether glycol of lower molecular weight first with an alkaline agent such as sodium hydroxide or other suitable base to form an alcoholate, and then coupling the alcoholate with a suitable difunctional coupling agent, such as the benzene-sulfonic acid diester of ethylene glycol or with some other suitable arylsulfonic acid diester of a C.sub.2 to C.sub.6 alcohol, thereby obtaining a 100 percent linear polypropylene ether glycol of a desirably higher molecular weight. Materials so produced find use in an aqueous medium as defoaming agents, thickeners, or emulsifiers, and use as protective colloids to improve the low-temperature stability of polyurethane and other latices.

REFERENCES:
patent: 2425845 (1947-08-01), Toussaint et al.
patent: 2481278 (1949-09-01), Ballard et al.
patent: 2839476 (1958-06-01), DeGroote et al.
patent: 2839477 (1958-06-01), DeGroote et al.
patent: 3036118 (1962-05-01), Jackson et al.
patent: 3053903 (1962-09-01), Holland
patent: 3057892 (1962-10-01), DeGroote
patent: 3082172 (1963-03-01), Temple et al.
patent: 3334147 (1967-08-01), Brunnelle et al.
patent: 3535307 (1970-10-01), Moss et al.
Price, Accounts of Chemical Research, vol. 7, pp. 294-295 (1974).

Affiliated with

Also associated with

Rating

Linear polyalkylene ether glycols of high molecular weight does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Linear polyalkylene ether glycols of high molecular weight, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear polyalkylene ether glycols of high molecular weight will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2209276