Abstract

A method for producing a trans-esterified hydroxypropyl lignin (HPL) is provided in one example embodiment and includes precipitating a lignin, dissolving the precipitated lignin in a solution, adding a reagent to the solution, adjusting the pH of the solution, allowing reactions in the solution to occur for a predetermined amount of time, precipitating the solution to produce a precipitate, and washing, filtering, and drying the precipitate to produce the trans-esterified HPL. In one example, a thermoplastic may be added to produce a trans-esterified HPL/thermoplastic blend.

IPC Classes  ?

• C08L 97/00 - Compositions of lignin-containing materials
• C08H 7/00 - LigninModified ligninHigh-molecular-weight products derived therefrom
• C07G 1/00 - Low-molecular-weight derivatives of lignin
• C08G 63/91 - Polymers modified by chemical after-treatment
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones

Abstract

A method for producing a trans-esterified hydroxypropyl lignin (HPL) is provided in one example embodiment and includes precipitating a lignin, dissolving the precipitated lignin in a solution, adding a reagent to the solution, adjusting the pH of the solution, allowing reactions in the solution to occur for a predetermined amount of time, precipitating the solution to produce a precipitate, and washing, filtering, and drying the precipitate to produce the trans-esterified HPL. In one example, a thermoplastic may be added to produce a trans-esterified HPL/thermoplastic blend.

IPC Classes  ?

• C08L 97/00 - Compositions of lignin-containing materials
• C08H 7/00 - LigninModified ligninHigh-molecular-weight products derived therefrom
• C07G 1/00 - Low-molecular-weight derivatives of lignin
• C08G 63/91 - Polymers modified by chemical after-treatment
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones

Abstract

A method for producing a trans-esterified hydroxypropyl lignin (HPL) is provided in one example embodiment and includes precipitating a lignin, dissolving the precipitated lignin in a solution, adding a reagent to the solution, adjusting the pH of the solution, allowing reactions in the solution to occur for a predetermined amount of time, precipitating the solution to produce a precipitate, and washing, filtering, and drying the precipitate to produce the trans-esterified HPL. In one example, a thermoplastic may be added to produce a trans-esterified HPL/thermoplastic blend.

IPC Classes  ?

• C08L 97/00 - Compositions of lignin-containing materials
• C08H 7/00 - LigninModified ligninHigh-molecular-weight products derived therefrom
• C07G 1/00 - Low-molecular-weight derivatives of lignin
• C08G 63/91 - Polymers modified by chemical after-treatment
• C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
• C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones

Abstract

One example embodiment includes inserting a chemical reagent into a process stream that contains one or more lignins to form one or more modified lignins. The formed one or more modified lignins are different than the one or more lignins in the process stream. The one or more modified lignins can be formed in the process stream before a precipitation stage and then separated from the process stream. Also, contaminates can be removed from the separated one or more modified lignins and the one or more modified lignins can be pressed and dried.

IPC Classes  ?

• D21H 17/32 - Guar gum
• D21C 11/00 - Regeneration of pulp liquors

Abstract

A composition is provided in one example embodiment and includes a modified lignin, a thermoplastic, and a compatibilizer. The modified lignin may be between about 5% to about 50% by weight of the composition. Also, the modified lignin may be a Hydroxypropyl Lignin (HPL). In an example, the thermoplastic can include a High Density Polyethylene (HDPE). In another example, the thermoplastic can include a Low Density Polyethylene (LDPE). In yet another example, the thermoplastic can include a Linear Low Density Polyethylene (LLDPE). The compatibilizer may be a Maleic Anhydride grafted Polyethylene Blend (MAh-g-PE).

IPC Classes  ?

• C08L 97/00 - Compositions of lignin-containing materials
• C08L 23/06 - Polyethene
• C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment

Abstract

In one example implementation, a trans-esterified HPL can include a HPL and a polyester including polyester chains. The polyester may be an aliphatic polyester, a semi-aromatic polyester, or an aromatic polyester.

IPC Classes  ?

• C08H 7/00 - LigninModified ligninHigh-molecular-weight products derived therefrom
• C07G 1/00 - Low-molecular-weight derivatives of lignin

Abstract

In one example implementation, a trans-esterified APL can include an APL and a polyester including polyester chains. The polyester may be an aliphatic polyester, a semi-aromatic polyester, or an aromatic polyester. In other examples, an acetate ester of the APL can be used to swap carboxylic acid groups with the alcohol oligomer units in the polyester chains.

IPC Classes  ?

• C08H 7/00 - LigninModified ligninHigh-molecular-weight products derived therefrom
• C07G 1/00 - Low-molecular-weight derivatives of lignin

Abstract

A method for producing an APL is provided in one example embodiment and includes mixing a solvent, a catalyst, a reagent, and a HPL to create a solution, raising the temperature of the solution to a first reaction temperature, raising the temperature of the solution to a second reaction temperature, allowing reactions in the solution to occur for a predetermined amount of time, precipitating the solution to produce a precipitate, and washing, filtering, and drying the precipitate to produce the APL.

IPC Classes  ?

• C08H 7/00 - LigninModified ligninHigh-molecular-weight products derived therefrom
• C07G 1/00 - Low-molecular-weight derivatives of lignin

Abstract

A method for producing a trans-esterified hydroxypropyl lignin (HPL) is provided in one example embodiment and includes precipitating a lignin, dissolving the precipitated lignin in a solution, adding a reagent to the solution, adjusting the pH of the solution, allowing reactions in the solution to occur for a predetermined amount of time, precipitating the solution to produce a precipitate, and washing, filtering, and drying the precipitate to produce the trans-esterified HPL.

IPC Classes  ?

• C08H 7/00 - LigninModified ligninHigh-molecular-weight products derived therefrom
• C07G 1/00 - Low-molecular-weight derivatives of lignin