Discoloration resistant fabric
AssigneeSurteco North America, Inc.
InventorsWilliam Ronald Bell, John R. Coulter, Marilyn Germano
Life of this patent
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Abstract
A vinyl fabric includes a polymeric film supported on a substrate. The polymeric film is provided from a composition that includes one or more chlorinated resins (particularly PVC), at least one polymeric plasticizer, large amounts of TiO2, and at least one antioxidant. The combination of the plasticizer, titania and antioxidant provides the film, and in turn the fabric, with improved resistance to discoloration, particularly pink staining as results from the presence of chromophores produced by Streptoverticillium reticulum.
Claims20
A fabric, comprising:
- a) a substrate comprising a film-based, woven, or non-woven cloth, the substrate comprising a first surface and a second surface;
- and
- b) provided on the first surface of said substrate, a polymeric film effective to help prevent discoloration resulting from migration and transportation of at least one chromophore produced by the Streptoverticillium reticulum bacteria, wherein the polymeric film comprises:
- 1) at least one polyvinyl chloride resin;
- 2) at least one adipic acid polyester polymeric plasticizer effective to help plasticize the at least one polyvinyl chloride resin, wherein said at least one adipic acid polyester polymeric plasticizer comprises a polymeric plasticizer that has a weight average molecular weight from 1,000 to 75,000 g/mol, wherein a weight ratio of polyvinyl chloride resin to polymeric plasticizer is from 3:4 to 4:3;
- 3) 10 to 30 parts by weight TiO2 per 100 parts by weight of the at least one polyvinyl chloride resin, wherein the TiO2 has a particle size of about 0.5 to about 1.0 microns;
- and
- 4) 5 to 5 parts by weight of one or more sterically hindered, hydroxyl functional, aromatic antioxidants per 100 parts by weight of the at least one polyvinyl chloride resin, wherein the one or more sterically hindered, hydroxyl functional, aromatic antioxidants each comprise from 2-10 sterically hindered phenol groups, each sterically hindered phenol group comprising at least two tBu groups, and
- wherein the film comprises from 38 wt. % to 44 wt. % of the polyvinyl chloride resin.
An upholstery cushion, comprising
- a) a three-dimensional core;
- and
- b) a fabric that comprises:
- 1) A substrate comprising a film-based, woven, or non-woven cloth, the substrate comprising first surface and a second surface, and
- 2) Provided on the first surface of said substrate, a polymeric film effective to help prevent discoloration resulting from migration and transportation of at least one chromophore produced by the Streptoverticillium reticulum bacteria, wherein the polymeric film comprises
- (A) at least one polyvinyl chloride resin;
- (B) at least one adipic acid polyester polymeric plasticizer effective to help plasticize the at least one polyvinyl chloride resin, wherein said at least one adipic acid polyester polymeric plasticizer comprises a polymeric plasticizer that has a weight average molecular weight from 1,000 to 75,000 g/mol, wherein a weight ratio of polyvinyl chloride resin to polymeric plasticizer is from 3:4 to 4:3;
- (C) 10 to 30 parts by weight TiO2 per 100 parts by weight of the at least one polyvinyl chloride resin, wherein the TiO2 has a particle size of about 0.5 to about 1.0 microns;
- and
- (D) 0.5 to 5 parts by weight of one or more sterically hindered, hydroxyl functional, aromatic antioxidants per 100 parts by weight of the at least one polyvinyl chloride resin, wherein the one or more sterically hindered, hydroxyl functional, aromatic antioxidants each comprise from 2-10 sterically hindered phenol groups, each sterically hindered phenol group comprising at least two tBu groups, and
- wherein the film comprises from 38 wt. % to 44 wt. % of the polyvinyl chloride resin.
A method of making a fabric, said method comprising forming on a first surface of a substrate comprising a film-based, woven, or non-woven cloth, a polymeric film effective to help prevent discoloration resulting from migration and transportation of at least one chromophore produced by the Streptoverticillium reticulum bacteria, wherein the substrate comprises a film-based, woven, or non-woven cloth, wherein the polymeric film is formed from a first precursor composition that comprises:
- at least one polyvinyl chloride resin;
- at least one adipic acid polyester polymeric plasticizer effective to help plasticize the at least one polyvinyl chloride resin, wherein:
- the at least one adipic acid polymeric polymeric plasticizer comprises a polymeric plasticizer that has a weight average molecular weight from 1,000 to 75,000 g/mol and
- a weight ratio of polyvinyl chloride resin to polymeric plasticizer is from 3:4 to 4:3;
- 10 to 30 parts by weight TiO2 per 100 parts by weight of the at least one chlorinated resin, wherein the TiO2 has a particle size of about 0.5 to about 1.0 microns;
- and
- 0.5 to 5 parts by weight of one or more sterically hindered, hydroxyl functional, aromatic antioxidants per 100 parts by weight of the at least one polyvinyl chloride resin, wherein the one or more sterically hindered, hydroxyl functional, aromatic antioxidants each comprise from 2-10 sterically hindered phenol groups, each sterically hindered phenol group comprising at least two tBu groups, and wherein the film comprises at least from 38 wt. % to 44 wt. % of the polyvinyl chloride resin.
Dependencies are inferred from the claim text.