Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2005-03-08
2005-03-08
Hightower, P. Hampton (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C528S157000, C528S158000, C528S162000, C528S256000, C528S259000, C524S002000, C524S247000, C524S248000, C524S401000, C524S428000, C524S843000, C525S497000, C525S498000, C525S499000
Reexamination Certificate
active
06864344
ABSTRACT:
Sulfonated condensation products that are stable in storage and have increased thermal stability are based on aminoplastic formers having at least two amino groups or naphthalene and formaldehyde and, optionally include organic nitrogen bases which additionally contain, as nitrogenous formulation auxiliary agents, compounds of general formula (I) R1—NH—X—Y—R2, wherein R1and R2independently represent H, —CH3, —C2H5, —C3H7, —(CH2)n—CH2—; X═—CH2, CO, CS; Y═S, NH, —(CH2)m—; n=0 to 9; m=1 to 4; and/or compounds of general formula (II),wherein Z═—OCH3, —SO3—H, —SO3Na+, —NO2, —NH2, —NH—NH2, —CO2—Na+, —CHO. The mole ratio of aminoplastic formers: formaldehyde: sulfite: nitrogenous formulation auxiliary agents rangin from 1:1.9 to 6.0:1.0 to 2.0:0.01 to 1.5 and/or the mole ratio of naphthalene sulfonic acid: formaldehyde; nitrogenous formulation auxiliary agents equals 1:0.7 to 3.0:0.01 to 1.5. Method for preparing these condensation products of using them, e.g., as additives for inorganic binding agents and for hydraulically setting dry mixtures that contain inorganic binding agents are also disclosed.
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Holland Uwe
Matzinger Martin
Plank Johann
Fulbright & Jaworski L.L.P.
Hampton Hightower P.
SKW Polymers GmbH
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