Artificial leather and method for producing same
AssigneeSpiber Inc.
InventorsHideki Kagata, Kazuki Sakata
Life of this patent
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Abstract
The present disclosure relates to a synthetic leather including a base material layer containing a fiber base material, in which at least a part of the synthetic leather contains a polypeptide derivative, the polypeptide derivative contains a block copolymer containing a first segment containing a polypeptide skeleton, and one or a plurality of second segments that are bonded to the first segment, the polypeptide skeleton is a recombinant polypeptide skeleton or a hydrophobic polypeptide skeleton, and the second segment contains a molecular group having a plasticizing function for the polypeptide skeleton.
Claims20
A synthetic leather comprising a base material layer containing a fiber base material,
- wherein at least a part of the synthetic leather contains a polypeptide derivative,
- the polypeptide derivative contains a block copolymer containing a first segment containing a polypeptide skeleton, and one or a plurality of second segments that are bonded to the first segment,
- the polypeptide skeleton is a recombinant polypeptide skeleton, and
- the second segment contains a molecular group having a plasticizing function for the polypeptide skeleton.
A synthetic leather comprising a base material layer containing a fiber base material,
- wherein at least a part of the synthetic leather contains a polypeptide derivative,
- the polypeptide derivative contains a block copolymer containing a first segment containing a polypeptide skeleton, and one or a plurality of second segments that are bonded to the first segment,
- the polypeptide skeleton is a hydrophobic polypeptide skeleton, and
- the second segment contains a molecular group having a plasticizing function for the polypeptide skeleton.
3-6. (canceled)
(canceled)
A method for producing a synthetic leather including a base material layer containing a fiber base material, the method comprising:
- (1) a step of forming a skin layer on the base material layer with an adhesive layer interposed therebetween, in which at least one of the base material layer, the adhesive layer, and the skin layer contains a polypeptide derivative;
- (2) a step of forming a skin layer on the base material layer without interposing an adhesive layer, in which at least one of the base material layer and the skin layer contains a polypeptide derivative;
- or
- (3) a step of forming the base material layer containing the fiber base material and the polymeric substance impregnated into the fiber base material by impregnating the fiber base material with an impregnation solution containing a polymeric substance and then solidifying the polymeric substance, in which at least one of the fiber base material and the polymeric substance contains a polypeptide derivative,
- wherein the polypeptide derivative contains a block copolymer containing
- a first segment containing a polypeptide skeleton, and
- one or a plurality of second segments that are bonded to the first segment,
- the polypeptide skeleton is a recombinant polypeptide skeleton, and
- the second segment contains a molecular group having a plasticizing function for the polypeptide skeleton.
A method for producing a synthetic leather including a base material layer containing a fiber base material, the method comprising:
- (1) a step of forming a skin layer on the base material layer with an adhesive layer interposed therebetween, in which at least one of the base material layer, the adhesive layer, and the skin layer contains a polypeptide derivative;
- (2) a step of forming a skin layer on the base material layer without interposing an adhesive layer, in which at least one of the base material layer and the skin layer contains a polypeptide derivative;
- or
- (3) a step of forming the base material layer containing the fiber base material and the polymeric substance impregnated into the fiber base material by impregnating the fiber base material with an impregnation solution containing a polymeric substance and then solidifying the polymeric substance, in which at least one of the fiber base material and the polymeric substance contains a polypeptide derivative,
- wherein the polypeptide derivative contains a block copolymer containing
- a first segment containing a polypeptide skeleton, and
- one or a plurality of second segments that are bonded to the first segment,
- the polypeptide skeleton is a hydrophobic polypeptide skeleton, and
- the second segment contains a molecular group having a plasticizing function for the polypeptide skeleton.
A synthetic leather comprising:
- a base material layer containing a fiber base material;
- and
- at least one of a skin layer bonded to the base material layer, an adhesive layer bonded to the base material layer and the skin layer, and a polymeric substance contained in the base material layer and impregnated into the fiber base material,
- wherein at least one of the fiber base material, the skin layer, the adhesive layer, and the polymeric substance contains a recombinant polypeptide derivative.
A synthetic leather comprising:
- a base material layer containing a fiber base material;
- and
- at least one of a skin layer bonded to the base material layer, an adhesive layer bonded to the base material layer and the skin layer, and a polymeric substance contained in the base material layer and impregnated into the fiber base material,
- wherein at least one of the fiber base material, the skin layer, the adhesive layer, and the polymeric substance contains a hydrophobic polypeptide derivative.
Dependencies are inferred from the claim text.