Appeal 1997-1635
Application 08/319,667
strongly acidic cation-exchange resins having sulfonic acid
groups (page 4, second full paragraph). Applicants, like
Japan, explicitly describe the use of benzenesulfonic acid and
p-toluenesulfonic acid (specification, page 4, lines 40-41).
24. The amine may be primary or secondary amine,
including tetramethylene diamine or pentamethylene diamine
(page 5, second and third paragraphs). Applicants, like
Japan, explicitly describe the use of tetramethylene diamine
and pentamethylene diamine (specification, page 6, lines 6-7).
Both amines contain primary amino groups ()NH ). For example,
2
tetramethylene diamine has the formula:
H N))CH ))CH ))CH ))CH ))NH .
2 2 2 2 2 2
25. Japan explains the manner for carrying out its
described process (page 6, third paragraph, through page 7,
first paragraph):
The treatment with both compounds can be made in any
order. It is preferable that the methacrylic acid-
containing matter is treated with one compound [i.e., the
sulfur or amine] followed by removing the residual
compounds by distillation, etc., subsequently treated
with the other compound(s).
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