摘要:
A cosmetic material sheet which comprises a sheet substrate 1 having, on an upper surface thereof, a large number of concave portions 5 arranged in a checkered pattern, a foundation layer 6 provided at a given position on the upper surface of the sheet substrate 1 in a state of covering arbitrary concave portions 5 out of a large number of concave portions 5, and a protective cover 3 attached releaseably on the upper surface of the sheet substrate 1 in a state of covering the foundation layer 6, wherein each concave portion 5 has an oblong shape in a plan view and has a bottom part thereof formed into a curved plane of a dish shape.
摘要:
A method for producing a thermoplastic cellulose composition according to the present invention includes a process of ring-opening polymerization of cyclic ester with a cellulosic material or oligoesterified cellulose after mechanochemical pretreatment or during mechanochemical treatment, to improve thermoplasticity of the resultant thermoplastic cellulose composition.
摘要:
A method for producing a thermoplastic cellulose composition according to the present invention includes a processs of ring-opening polymerization of cyclic ester with a cellulosic material or oligoesterified cellulose after mechanochemical pretreatment or during mechanochemical treatment, to improve thermoplasticity of the resultant thermoplastic cellulose composition.
摘要:
A fluorine-containing cellulose derivative of the formula:[C.sub.6 H.sub.7 O.sub.2 (OH).sub.a (OR).sub.b (OCOA).sub.c ].sub.p (I)wherein a is a number of not smaller than 0 (zero), b is a number of not smaller than 0 (zero), c is a number larger than 0 (zero) provided that the sum of a, b and c is 3; p represents a degree of polymerization of the cellulose derivative and is a number of 5 to 3000; R is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms, a substituted or unsubstituted acyl group having 2 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms or a substituted benzoyl group of the formula: ##STR1## wherein W is --COOR in which R is a hydrogen atom or a substituted or unsubstituted alkyl group having 1 to 8 carbon atoms; A is a group of the formula: ##STR2## wherein X is a hydrogen atom, a carboxyl group or an alkyl group having 1 to 5 carbon atoms and Y is a monovalent organic group having 2 to 20 carbon atoms and at least one fluorine atom or A is a group of the formula:--CF.sub.2 CZ.sub.2 --(OCF.sub.2 CF.sub.2 CZ.sub.2).sub.q --F (IV)wherein the Z substituents are the same or different and each a hydrogen atom, a fluorine atom or a chlorine atom and q is a number of 1 to 200, which has better properties than the known fluorine-containing cellulose derivatives.
摘要:
The present invention provides a biodegradable article formed from enzyme-synthesized amylose using phosphorylase, wherein the enzyme-synthesized amylose is composed of glucose monomers exclusively bonded by α-1,4-glucosidic likage and has a weight average molecular weight of not less than 100 kDa, preferable not less than 600 kDa. The enzyme-synthesized amylose employed in the present invention has a molecular weight distribution (Mw/Mn) of not more than 1.25 and can be chemically modified if desired.The biodegradable article of the present invention can be produced by (a) the enzyme-synthesized amylose and/or its modified one, or a combination of the amylose (a) and another polymer material (b).
摘要:
The invention intends to provide a technique for making a dispersion phase of a biomass origin component of a polymer composite material, wherein the dispersion phase is formed in a parent phase of a synthetic polymer, highly minutely and evenly. An apparatus (10) for manufacturing a polymer composite material is characterized by comprising: a cylinder (13) in which a feeding section (A) for feeding a principal component of the synthetic polymer and an excess hydrous substance of the biomass origin component is provided in the upstream side while a extracting means (17) is provided in the downstream side; a screw (15) which axially rotates within the cylinder (13), which has been set to a kneading temperature (Tz) at which the synthetic polymer melts, and extrudes the kneading substance comprising the main component and the excess hydrous substance toward the extracting means (17); and a dehydration means (40) by which water contained in the kneading substance is removed under setting pressures (Pa, Pb, PC) being lower than the saturated vapor pressure (Pz) at the kneading temperature (Tz) employed in the cylinder (13) but higher than atmospheric pressure.
摘要:
The invention provides a composite resin composition comprising aliphatic polyester resin (component A) having aliphatic hydroxycarboxylic acid units, one or more biomass material (component B) selected from the group consisting of cellulose, lignocellulose and starch and unsaturated carboxylic acid or a derivative thereof (component C), wherein the composite resin composition comprises a component obtained by covalently bonding a portion or the whole of component A and component B through component C. On processing into various formed items, the composite resin composition of the invention exhibits excellent tensile strength and other physical properties and processability and simultaneously has good biodegradability, and enable biomass materials of low added value to apply to high added value uses in a large amount.
摘要:
A benzylated lignocellulosic substance obtained through benzylation, wherein 46 to less than 97% of lignin-carbohydrate complex (LCC) contained in a wood raw material from which the substance is formed remains.
摘要:
The invention provides a composite resin composition comprising aliphatic polyester resin (component A) having aliphatic hydroxycarboxylic acid units, one or more biomass material (component B) selected from the group consisting of cellulose, lignocellulose and starch and unsaturated carboxylic acid or a derivative thereof (component C), wherein the composite resin composition comprises a component obtained by covalently bonding a portion or the whole of component A and component B through component C. On processing into various formed items, the composite resin composition of the invention exhibits excellent tensile strength and other physical properties and processability and simultaneously has good biodegradability, and enable biomass materials of low added value to apply to high added value uses in a large amount.
摘要:
A benzylated lignocellulosic substance obtained through benzylation, wherein 46 to less than 97% of lignin-carbohydrate complex (LCC) contained in a wood raw material from which the substance is formed remains.