Paraben derivatives for preserving cellulosic materials
View Patent ↗A method of preserving cellulosic material is provided. The method includes contacting the cellulosic material with a paraben-containing monomer and polymerizing the paraben-containing monomer to provide a polymer impregnated within the cellulosic material; or alternatively, first polymerizing the paraben-containing monomer to give a polymer comprising repeat units formed of the monomer and contacting the cellulosic material with the polymer under pressure to provide the polymer impregnated with the cellulosic material. Articles including the cellulosic material and at least one polymer which includes paraben moieties are also provided, such as a wooden plank, a utility pole, a railroad tie, a ship's hull, a wooden utensil, a toy, a model, a piece of furniture, a vehicle, or a serving dish.
1. An article comprising a cellulosic material and at least one polymer comprising paraben moieties impregnated within the cellulosic material, wherein the polymer comprises repeat units formed from a monomer of Formula I:
wherein:
R 1 , R 2 , R 4 , and R 5 are each independently H, alkyl, alkenyl, or aryl;
R 3 is OH or SH;
G is a group of formula
and
R 6 is an alkyleneamino or an alkyleneoxy moiety;
each R 9 is independently H, halo, CN, NO 2 , alkyl, alkenyl, or alkynyl; and
R 10 is H or alkyl.
2. The article of claim 1 , wherein the cellulosic material is wood or paper.
3. The article of claim 1 which is a wooden plank, utility pole, railroad tie, ship's hull, wooden utensil, toy, model, piece of furniture, vehicle, or serving dish.
4. The article of claim 1 , wherein R 1 , R 2 , R 4 and R 5 are H.
5. The article of claim 1 , wherein
R 6 is a polyalkyleneoxy moiety.
6. The article of claim 1 , wherein R 3 is OH.
7. The article of claim 1 , wherein G is a group of formula
8. The article of claim 1 , wherein the article is a wooden plank, a utility pole, a railroad tie, a ship's hull, a wooden utensil, a toy, a model, a piece of furniture, a vehicle, or a serving dish; and the cellulosic material is other than paper.
9. The article of claim 1 , wherein
the article is a wooden plank, a utility pole, a railroad tie, a ship's hull, a wooden utensil, a toy, a model, a piece of furniture, a vehicle, or a serving dish;
the cellulosic material is other than paper; and
R 6 is an alkyleneamino or a polyalkyleneoxy moiety.
10. A method of preserving a cellulosic material, the method comprising:
contacting the cellulosic material with a monomer of Formula I; and
polymerizing the monomer of Formula I to provide a polymer impregnated within the cellulosic material;
wherein;
R 1 , R 2 , R 4 , and R 5 are each independently H, alkyl, alkenyl, or aryl;
R 3 is OH or SH;
G is a group of formula
and
R 6 is an alkyleneamino or an alkyleneoxy moiety;
each R 9 is independently H, halo, CN, NO 2 , alkyl, alkenyl, or alkynyl; and
R 10 is H or alkyl.
11. The method of claim 10 , wherein G is a group of formula
12. The method of claim 10 , wherein the contacting comprises using a pressure process or a fluctuation pressure process.
13. A method of preserving a cellulosic material, the method comprising:
polymerizing a monomer of Formula I to give a polymer comprising repeat units formed from the monomer of Formula I; and
contacting the cellulosic material with the polymer under pressure to provide the polymer impregnated within the cellulosic material;
wherein;
R 1 , R 2 , R 4 , and R 5 are each independently H, alkyl, alkenyl, or aryl;
R 3 is OH or SH;
G is a group of formula
and
R 6 is an alkyleneamino or an alkyleneoxy moiety;
each R 9 is independently H, halo, CN, NO 2 , alkyl, alkenyl, or alkynyl; and
R 10 is H or alkyl.
14. The method of claim 13 , wherein G is a group of formula