Appeal 2007-3373
Application 10/477,363
1 Claim 8 is directed to a process for making the compound (actually
2 the polymer or copolymer) of formula I which basically comprises reacting
3 the additive with the dendritic polymer. Claim 9 reads:
4
5 9. A process according to claim 8 which comprises reacting a
6 carboxy-functional additive with poly(ethylene glycol)-
7 monomethyl ether and dimethylolpropionic acid.
8
9 Berg
10 Berg's invention relates to a composition comprising a plastic and an
11 "additive." Col. 1:6-7.
12 As will become apparent, the additive is prepared by reacting an
13 "modifying group" with a dendritic polymer.
14 Suitable dendritic polymers include polyesters and polyethers.
15 Col. 3:4-5.
16 A compound, which Berg calls a "modifying" compound, is reacted
17 with the dendritic polymer (col. 3:20-31):
18 Within the scope of the invention, a compound which
19 contains at least one reactive group which can enter into a
20 chemical bond with the functional end groups of a dendrimer, is
21 called a modifying compound. That part of the modifying
22 compound which, after the reaction, remains attached to the
23 dendrimer is here and hereinafter referred to as the modifying
24 group. In the course of the reaction between reactive group and
25 functional end group, molecules may be eliminated. The
26 modifying group can be both polar and apolar. The modifying
27 group can be bound to the dendrimer in various ways, for
28 example via a covalent bond, via a hydrogen bridge or via an
29 ionogenic bond.
8
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: September 9, 2013