Appeal 2007-3258
Application 10/916,195
1 According to Goodyear, rubber components in tires often include
2 antioxidants to minimize the effects of oxygen on the rubber. Specification,
3 page 1:6-8.
4 Rubber innerliners disposed on the inner surface of a tire are designed
5 to (1) retain inflation air within the tire and (2) minimize migration of
6 oxygen into the tire components. Specification, page 1:8-10.
7 The specification identifies three patents, including Cahill, which
8 are said to describe compositions for scavenging oxygen. Specification,
9 page 1:17-18.
10 The compositions comprise predominantly polyester segments and an
11 oxygen scavenging amount of polyolefin oligomer segments.
12 The invention
13 The invention provides a tire comprising an oxygen scavenging
14 barrier. Specification, page 1:23.
15 The barrier comprises a film comprising a copolymer having a
16 polyester segment and an oxygen scavenging amount of a polyolefin
17 oligomer segment. Specification, page 1:24-26.
18 Suitable barriers can be made from polyester copolymers which are
19 copolycondensates of polyesters and hydrocarbons. Specification,
20 page 2:6-7.
21 The polyester copolymer may be extruded into suitable forms to be
22 accommodated into a tire. For example, the copolymer may be extruded or
23 blown into a thin film suitable for interlaminar placement in a tire. The
24 oxygen scavenging barrier may be disposed as one layer in a multilayer
25 innerliner in the manner described in Katsuki. Specification, page 3:16-22.
4
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Last modified: September 9, 2013