Plastic and foam plastic and method for making them

Details Plastic and foam plastic and method for making them Plastic and foam plastic and method for making them

1981-02-23

1983-01-25

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521136, 521181, C08J 930

Patent

active

043704247

ABSTRACT:
Plastics are produced by reacting at least one compound containing sulfonic acid groups with at least one aldehyde in the presence of a hydroxy compound in an acidic concentrated aqueous solution having a water content of about 20 to 30% by weight. If a tenside is present the reactants will form a foam. The preferred sulfonic acid-containing compound is the sodium salt of diisobutylnaphthalene sulfonic acid, the preferred hydroxy compound is a phenol, vix. resorcinol, and the preferred aldehyde is formaldehyde which may be formed in situ from hexamethylenetetramine, paraformaldehyde, trioxane, or the like.

REFERENCES:
patent: 3150108 (1964-09-01), Villi
patent: 3885010 (1975-05-01), Bruning et al.
patent: 4176216 (1979-11-01), Reid et al.
patent: 4221871 (1980-09-01), Volodko et al.

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