In one preferred embodiment, polymers are provided that comprise a structure of the following Formula (I): ##STR00001##
Photoresists that comprises such polymers also are provided.

In one preferred embodiment, polymers are provided that comprise a structure of the following Formula (I): ##STR00001##
Photoresists that comprises such polymers also are provided.

Methods of treating fibers comprising a polymer including at least one of a vinyl acetate moiety or a vinyl alcohol moiety, and resulting fibers or the products comprising the resulting fibers are disclosed. In an example embodiment, a fiber having a surface region and an interior region, includes a polymer comprising at least one of a vinyl acetate moiety or a vinyl alcohol moiety chemically modified with a modification agent. The fiber has a transverse cross-section including the interior region comprising the polymer having a first degree of modification and the surface region comprising the polymer having a second degree of modification greater than the first degree of modification.

Methods of treating fibers comprising a polymer including at least one of a vinyl acetate moiety or a vinyl alcohol moiety, and resulting fibers or the products comprising the resulting fibers are disclosed. In an example embodiment, a fiber having a surface region and an interior region, includes a polymer comprising at least one of a vinyl acetate moiety or a vinyl alcohol moiety chemically modified with a modification agent. The fiber has a transverse cross-section including the interior region comprising the polymer having a first degree of modification and the surface region comprising the polymer having a second degree of modification greater than the first degree of modification.

Methods of treating fibers comprising a polymer including at least one of a vinyl acetate moiety or a vinyl alcohol moiety, and resulting fibers or the products comprising the resulting fibers are disclosed. In an example embodiment, a method of treating fibers includes contacting a surface of a fiber comprising the polymer with a modification agent to chemically modify at least a portion of the polymer with the modification agent in a region of the fiber comprising at least the surface of the fiber to form a modified fiber.

Methods of treating fibers comprising a polymer including at least one of a vinyl acetate moiety or a vinyl alcohol moiety, and resulting fibers or the products comprising the resulting fibers are disclosed. In an example embodiment, a method of treating fibers includes contacting a surface of a fiber comprising the polymer with a modification agent to chemically modify at least a portion of the polymer with the modification agent in a region of the fiber comprising at least the surface of the fiber to form a modified fiber.

A photosensitive resin composition contains (i) modified partially-saponified polyvinyl acetate having a functional group introduced into a side chain thereof, (ii) tertiary nitrogen atom-containing polyamide, (iii) a photopolymerizable unsaturated compound and (iv) a photopolymerization initiator, characterized in that the above (ii) tertiary nitrogen atom-containing polyamide contains 20 to 50% by mol of a structural unit obtained from cyclohexane-dicarboxylic acid and 50 to 95% by mol of an alicyclic structural unit in total, in relation to a total of an amount of an aminocarboxylic acid unit (including a case wherein lactam is a raw material), an amount of a dicarboxylic acid unit and an amount of a diamine unit in the polyamide molecule. There is also provided a relief printing original plate which is characterized in having, on a support, a photosensitive resin layer formed by using this photosensitive resin composition.

A photosensitive resin composition contains (i) modified partially-saponified polyvinyl acetate having a functional group introduced into a side chain thereof, (ii) tertiary nitrogen atom-containing polyamide, (iii) a photopolymerizable unsaturated compound and (iv) a photopolymerization initiator, characterized in that the above (ii) tertiary nitrogen atom-containing polyamide contains 20 to 50% by mol of a structural unit obtained from cyclohexane-dicarboxylic acid and 50 to 95% by mol of an alicyclic structural unit in total, in relation to a total of an amount of an aminocarboxylic acid unit (including a case wherein lactam is a raw material), an amount of a dicarboxylic acid unit and an amount of a diamine unit in the polyamide molecule. There is also provided a relief printing original plate which is characterized in having, on a support, a photosensitive resin layer formed by using this photosensitive resin composition.

A laminate shaping support material is provided which includes one of: a resin composition containing a polyvinyl alcohol resin having a primary hydroxyl group at its side chain, and having a heat of fusion of 10 to 30 J/g at its melting point (Embodiment (X)); and a resin composition containing a polyvinyl alcohol resin, and a block copolymer including a polymer block of an aromatic vinyl compound, at least one of a polymer block of a conjugated diene compound and a block of a hydrogenated conjugated diene compound, and a functional group reactive with a hydroxyl group (Embodiment (Y)). Therefore, the laminate shaping support material according to Embodiment (X), for example, is excellent in shape stability and adhesiveness to a model material. The laminate shaping support material according to Embodiment (Y) is excellent in peelability and forming stability.

A laminate shaping support material is provided which includes one of: a resin composition containing a polyvinyl alcohol resin having a primary hydroxyl group at its side chain, and having a heat of fusion of 10 to 30 J/g at its melting point (Embodiment (X)); and a resin composition containing a polyvinyl alcohol resin, and a block copolymer including a polymer block of an aromatic vinyl compound, at least one of a polymer block of a conjugated diene compound and a block of a hydrogenated conjugated diene compound, and a functional group reactive with a hydroxyl group (Embodiment (Y)). Therefore, the laminate shaping support material according to Embodiment (X), for example, is excellent in shape stability and adhesiveness to a model material. The laminate shaping support material according to Embodiment (Y) is excellent in peelability and forming stability.