Non-stick polymer coated aluminum foil

• US 6,696,511 B2
• Filed: 05/09/2002
• Issued: 02/24/2004
• Est. Priority Date: 05/24/2000
• Status: Expired due to Term

• Current Assignee: Reynolds Consumer Products Incorporated
• Original Assignee: Reynolds Metals Company (Howmet Aerospace, Inc.)
• Inventors: Robbins, Bruce
• Primary Examiner(s): Dawson, Robert
• Assistant Examiner(s): Zimmer, Marc S
• Application Number:
  US10/142,815
• Publication Number:
  US 20020173614A1
• Time in Patent Office: 656 Days
• Field of Search: 524/323, 524/324, 524/349, 524/351, 524/352, 524/588, 524/266, 524/268, 106/287.12, 106/287.13
• US Class Current: 524/323
• CPC Class Codes: B05D 3/0209 Multistage baking
• CPC Class Codes: B05D 5/08 to obtain an anti-friction or anti-adhesive surface rendering particulate materials free-flowing in general, e.g. making them hydrophobic B01J2/30
• CPC Class Codes: B05D 7/14 to metal, e.g. car bodies involving a chemical reaction between the metal and the coating C23
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

A non-stick polymer coated aluminum foil and method of making it. The polymer coating composition comprises a silicone resin, a silicone release agent, a silicone curing agent, a hindered phenol antioxidant and a solvent. The method of making the non-stick polymer coated aluminum foil includes applying the polymer coating composition on at least a portion of one side of the aluminum foil and partially curing the coating composition to allow handling and future processing of the coated aluminum foil without blocking of the coating composition. The curing of the coating composition is completed by heating the coated aluminum foil in bulk.

Claims

1. A non-stick coating composition comprising:

a silicone resin selected from the group consisting of dimethyl polysiloxanes, polyester-modified methylphenyl polysiloxanes and hydroxyl functional silicone resins;

a zinc metal salt silicone resin curing agent;

a polydimethylsiloxane liquid compound silicone release agent;

a solvent; and

an effective amount of a 2,6-disubstituted phenol antioxidant.

2. A non-stick coating composition comprising:

a silicone resin selected from the group consisting of dimethyl polysiloxanes, polyester-modified methylphenyl polysiloxanes and hydroxyl functional silicone resins;

a silicone resin curing agent;

a silicone release agent;

a solvent; and

an effective amount of butylated hydroxy toluene antioxidant.

3. A non-stick coating composition comprising:

a silicone resin selected from the group consisting of dimethyl polysiloxanes, polyester-modified methylphenyl polysiloxanes and hydroxyl functional silicone resins;

a zinc neodecanoate silicone resin curing agent;

a silicone release agent;

a solvent; and

an effective amount of a hindered phenol antioxidant.

4. A non-stick coating composition comprising:

a silicone resin selected from the group consisting of dimethyl polysiloxanes, polyester-modified methylphenyl polysiloxanes and hydroxyl functional silicone resins;

a silicone resin curing agent;

a silicone release agent;

a solvent; and

an effective amount of a hindered phenol antioxidant,

wherein said silicone resin release agent is used in an amount of from about 0.1 to about 5.0 percent by weight, said curing catalyst is used in an amount of from about 0.05 to about 2.0 percent by weight and said hindered phenol is used in an amount of from about 0.1 to about 4.0 percent by weight of the silicone resin.