Appeal No. 2000-0343
Application 08/849,008
OPINION
We reverse the aforementioned rejections. We need to
address only claims 1 and 23.
Claim 1
Gaylord ‘230 discloses a method for compatibilizing
thermoplastic polymers with hydroxyl group-containing fillers
(col. 1, lines 9-10). Gaylord ‘230 teaches that “[t]he
material containing hydroxyl groups used in the practice of
this invention may be any of the well known inorganic -OH
containing filler materials or reinforcing agents such as
siliceous materials (e.g., clay, sand, wollastonite, glass,
quartz, diatomaceous earth, mica, silica, asbestos, talc,
kaolinite and nepheline syenite); hydrated or partially
hydrated metal oxides (e.g., titania, zirconia, vanadia,
alumina, chromia, zinc oxide, magnesium oxide and boron
oxides); carbonates (e.g., limestone and chalk); etc.” (col.
2, lines 34-43). Gaylord ‘230 charges a thermoplastic
polymer, a hydroxyl group-containing filler, an ethylenically
unsaturated carboxylic acid or anhydride, and a free radical
generating catalyst to a mill and blends the mixture at
4
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