Spray-dried phenolic adhesives

Details Spray-dried phenolic adhesives Spray-dried phenolic adhesives

1976-09-15

1978-07-04

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

260 172, 264 13, 528155, 528140, 528147, C08G 400, C08G 810, C08J 312

Patent

active

040987701

ABSTRACT:
A method of preparing a modified phenol-formaldehyde resin in solid particulate form comprising reacting together, in an aqueous medium, phenol and formaldehyde, in a ratio of 1.0 mole phenol to between 1.8 and 3.5 moles of formaldehyde, in the presence of between 0.1 and 1.0 moles of a basic catalyst; continuing this reaction until a desired viscosity is reached; modifying the reaction system by adding thereto between 0 and 30%, based on the weight of phenol originally taken of a non-phenolic polyhydroxy compound; spray drying the thus modified liquid resin in a pressure nozzle drier, and chilling the spray dried particulate solid. These solid resins are redispersible in water and stable on storage, compared to the known aqueous, equivalent, systems.

REFERENCES:
patent: 1660403 (1928-02-01), Turkington
patent: 2315432 (1943-03-01), Kropa
patent: 2376213 (1945-05-01), Watson et al.,
patent: 2976574 (1961-03-01), Keutgen et al.
patent: 3661814 (1972-05-01), Smith et al.

Affiliated with

Also associated with

Rating

Spray-dried phenolic adhesives does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spray-dried phenolic adhesives, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spray-dried phenolic adhesives will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-277240