Appeal No. 1997-2376
Application 08/199,863
claims 49, 50, 53 and 54 as amended after final rejection.
These are all of the claims remaining in the application.
THE INVENTION
Appellant claims a method for applying meltable polymer
additives such as antioxidants, thermal stabilizers,
colorants, lubricants, mold release agents, and antistatic
agents to polymer particles. Claim 49 is illustrative and
reads as follows:
49. A method for treating polymer particles with a
dispersion in water of one or more meltable polymer additives
said method comprising
contacting with an aqueous medium under conditions of
agitation for a time to efficiently wet with water and form a
dispersion the composition comprising:
i) one or more water insoluble, meltable polymer
additives, wherein substantially all of said polymer
additives have a particle size of less than about 40 Fm,
ii) at least one surfactant having a low hydrophobic-
lipophobic balance value less than 9, wherein said
surfactant is adsorbed on the surface of said water
insoluble, meltable polymer additive particles, and
iii) at least on surfactant having a high hydrophobic-
lipophobic balance value of greater than 9,
wherein said composition is in powder form having a particle
size of about 5.0 to about 1000.0 Fm and contains about 2.0 to
2
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