IP Library Granted Patent US 12667107
Granted Patent B2
US 12667107 · App. 17/622,082 · Granted Jun 30, 2026

Pine oil-based herbicide

Inventor: Hugh Frith (Warana, AU)
Assignee: GREENPRO SOLUTIONS PTY LTD
A01N65/06A01N27/00A01N31/06A01N43/90
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Quick Facts
Patent No.
US 12667107
App. No.
17/622,082
Granted
Jun 30, 2026
Kind
B2
Abstract

The present invention relates to a herbicide formulation based on pine oil. The present invention also relates to a method of reducing unwanted vegetation in a soil environment and a method for reducing seed viability using the herbicide formulation. The herbicide formulation comprises a pine oil, a tall oil, and an alkali. The formulation has improved herbicidal properties, and is less subject to coagulation at low ambient temperatures.

Claims (158)

1 . An organic herbicide product comprising:

low lignin content pine oil about 48%-75% (w/w);

low to medium rosin tall oil about 19.4%-23% (w/w); and

KOH about 4%-8% (w/w);

wherein the pH of the product is about 10 to about 11;

wherein the low lignin content pine oil comprises less than 1% (w/v) lignin;

wherein the low lignin content pine oil comprises hand-tapped pine oil;

wherein the low to medium rosin tall oil is a tall oil with 30% (w/w) or less rosin acid; and

wherein the organic herbicide product does not contain NaOH.

2 . The organic herbicide product according to claim 1 , wherein the low lignin content pine oil comprises (% w/w):

3-carene

1.3%-2.0%;

Limonene

 6.0%-7.20%;

Eucalyptol

0.08%-0.90%;

g terpinene

1.00%-1.55%;

limonene isomer

10.90%-11.10%;

fenchol

1.00%-1.70%;

b terpinenol

4.40%-5.50%;

g terpinenol

3.00%-3.10%;

endo borneol

1.50%-2.30%;

terpinen-4-ol

1.80%-2.10%;

alpha-terpinenol

48.0%-54.9%; and

2-carene

9.00%-9.35%.

3 . The organic herbicide product according to claim 1 , wherein the low lignin content pine oil is hand-tapped pine oil.

4 . The organic herbicide product according to claim 1 , wherein the low lignin content pine oil comprises less than 0.5% (w/v) lignin.

5 . The organic herbicide product according to claim 1 , wherein the low lignin content pine oil is present at 53% (w/w), 54% (w/w), 55% (w/w), 56% (w/w), 57% (w/w), 58% (w/w), 59% (w/w), 60% (w/w), 61% (w/w), 62% (w/w), 63% (w/w), 64% (w/w), 65% (w/w), 66% (w/w), 67% (w/w), 68% (w/w), 68.5% (w/w), 69% (w/w), 70% (w/w), 71% (w/w), 72% (w/w), 73% (w/w), 74% (w/w), or 75% (w/w) of the organic herbicide product.

6 . A method of reducing unwanted vegetation in a soil environment comprising:

spraying the soil environment with an effective amount of an organic herbicide product comprising:

low lignin content pine oil about 48%-75% (w/w);

low to medium rosin tall oil about 19.4%-23% (w/w); and

KOH about 4%-8% (w/w);

wherein the pH of the product is about 10 to about 11;

wherein the low lignin content pine oil comprises less than 1% (w/v) lignin;

wherein the low lignin content pine oil comprises hand-tapped pine oil;

wherein the low to medium rosin tall oil is a tall oil with 30% (w/w) or less rosin acid; and

wherein the organic herbicide product does not contain NaOH.

7 . The method according to claim 6 , wherein the low lignin content pine oil comprises (% w/w):

3-carene

1.3%-2.0%;

Limonene

 6.0%-7.20%;

Eucalyptol

0.08%-0.90%;

g terpinene

1.00%-1.55%;

limonene isomer

10.90%-11.10%;

fenchol

1.00%-1.70%;

b terpinenol

4.40%-5.50%;

g terpinenol

3.00%-3.10%;

endo borneol

1.50%-2.30%;

terpinen-4-ol

1.80%-2.10%;

alpha-terpinenol

48.0%-54.9%; and

2-carene

9.00%-9.35%.

8 . The method according to claim 6 , wherein the low lignin content pine oil is hand-tapped pine oil.

9 . The method according to claim 6 , wherein the low lignin content pine oil comprises less than 0.5% (w/v) lignin.

10 . The method according to claim 6 , wherein the low lignin content pine oil is present at 53% (w/w), 54% (w/w), 55% (w/w), 56% (w/w), 57% (w/w), 58% (w/w), 59% (w/w), 60% (w/w), 61% (w/w), 62% (w/w), 63% (w/w), 64% (w/w), 65% (w/w), 66% (w/w), 67% (w/w), 68% (w/w), 68.5% (w/w), 69% (w/w), 70% (w/w), 71% (w/w), 72% (w/w), 73% (w/w), 74% (w/w), or 75% (w/w) of the organic herbicide product.

11 . The method according to claim 6 , wherein the unwanted vegetation is annual ryegrass ( Lolium rigidum ), red-root amaranth ( Amaranthus retroflexus ), fat hen ( Chenopodium album ), or blackberry nightshade ( Solanum nigrum ).

12 . The method according to claim 6 , wherein the organic herbicide product is a concentrate which is mixed or diluted with water, and optionally wherein the organic herbicide product is in the form of an emulsion-in-water.

13 . A method for reducing seed viability comprising:

spraying a soil environment with an effective amount of an organic herbicide product comprising:

low lignin content pine oil about 48%-75% (w/w);

low to medium rosin tall oil about 19.4%-23% (w/w); and

KOH about 4%-8% (w/w);

wherein the pH of the product is about 10 to about 11;

wherein the low lignin content pine oil comprises less than 1% (w/v) lignin;

wherein the low lignin content pine oil comprises hand-tapped pine oil;

wherein the low to medium rosin tall oil is a tall oil with 30% (w/w) or less rosin acid; and

wherein the organic herbicide product does not contain NaOH.

14 . The method according to claim 13 , wherein the organic herbicide product damages the shell casing of the seed, thereby exposing the interior of the seed to an element.

15 . The method according to claim 13 , wherein the seed is present in the soil environment and/or is present on unwanted vegetation growing within the soil environment.

16 . The method according to claim 13 , wherein the low lignin content pine oil comprises (% w/w):

3-carene

1.3%-2.0%

Limonene

6.0%-7.20 

Eucalyptol

0.08%-0.90%

g terpinene

1.00%-1.55%

limonene isomer

10.90%-11.10%

fenchol

1.00%-1.70%

b terpinenol

4.40%-5.50%

g terpinenol

3.00%-3.10%

endo borneol

1.50%-2.30%

terpinen-4-ol

1.80%-2.10%

alpha-terpinenol

48.0%-54.9%; and

2-carene

9.00%-9.[[,]]35%.

17 . The method according to claim 13 , wherein the low lignin content pine oil is hand-tapped pine oil.

18 . The method according to claim 13 , wherein the low lignin content pine oil comprises less than 0.5% (w/v) lignin.

19 . The method according to claim 13 , wherein the low lignin content pine oil is present at 53% (w/w), 54% (w/w), 55% (w/w), 56% (w/w), 57% (w/w), 58% (w/w), 59% (w/w), 60% (w/w), 61% (w/w), 62% (w/w), 63% (w/w), 64% (w/w), 65% (w/w), 66% (w/w), 67% (w/w), 68% (w/w), 68.5% (w/w), 69% (w/w), 70% (w/w), 71% (w/w), 72% (w/w), 73% (w/w), 74% (w/w), or 75% (w/w) of the organic herbicide product.

20 . The method according to claim 13 , for reducing the seed viability for seeds of annual ryegrass ( Lolium rigidum ), red-root amaranth ( Amaranthus retroflexus ), fat hen ( Chenopodium album ), or blackberry nightshade ( Solanum nigrum ).

21 . The method according to claim 13 , wherein the organic herbicide product is a concentrate which is mixed or diluted with water, and optionally wherein the organic herbicide product is in the form of an emulsion-in-water.

22 . A process for preparing an organic herbicide product, the process comprising mixing at ambient temperature for a time sufficient to cause saponification:

low lignin content pine oil about 48%-75% (w/w);

low to medium rosin tall oil about 19.4%-23% (w/w); and

KOH about 4%-8% (w/w);

wherein the pH of the product is about 10 to about 11;

wherein the low lignin content pine oil comprises less than 1% (w/v) lignin;

wherein the low lignin content pine oil comprises hand-tapped pine oil;

wherein the low to medium rosin tall oil is a tall oil with 30% (w/w) or less rosin acid; and

wherein the organic herbicide product does not contain NaOH.

23 . The process according to claim 22 , wherein the mixing is conducted at a temperature of from about 10° C. to about 35° C.

24 . The process according to claim 22 , wherein the mixing is conducted for about 1 to about 5 hours.

25 . The process according to claim 22 , wherein the low lignin content pine oil comprises (% w/w):

3-carene

1.3%-2.0%;

Limonene

 6.0%-7.20%;

Eucalyptol

0.08%-0.90%;

g terpinene

1.00%-1.55%;

limonene isomer

10.90%-11.10%;

fenchol

1.00%-1.70%;

b terpinenol

4.40%-5.50%;

g terpinenol

3.00%-3.10%;

endo borneol

1.50%-2.30%;

terpinen-4-ol

1.80%-2.10%;

alpha-terpinenol

48.0%-54.9%; and

2-carene

9.00%-9.35%.

26 . The process according to claim 22 , wherein the low lignin content pine oil is hand-tapped pine oil.

27 . The process according to claim 22 , wherein the low lignin content pine oil comprises less than 0.5% (w/v) lignin.

28 . The process according to claim 22 , wherein the low lignin content pine oil is present at 53% (w/w), 54% (w/w), 55% (w/w), 56% (w/w), 57% (w/w), 58% (w/w), 59% (w/w), 60% (w/w), 61% (w/w), 62% (w/w), 63% (w/w), 64% (w/w), 65% (w/w), 66% (w/w), 67% (w/w), 68% (w/w), 68.5% (w/w), 69% (w/w), 70% (w/w), 71% (w/w), 72% (w/w), 73% (w/w), 74% (w/w), or 75% (w/w) of the organic herbicide product.