# US 9,433,216 B2 · Construction material preservative

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- Number: US 9,433,216 B2
- Document ID: US9433216B2
- Status: Granted
- Kind: B2
- Application number: 13/261,775
- Filed: 2012-05-09
- Published: 2014-03-06
- Granted: 2016-09-06
- Earliest claimed: 2011-05-11
- Assignees: Nippon Soda Co., Ltd.
- Applicants: Shinya Watanabe; Satoru Makita; Motoaki Yabe; Shigebumi Arai
- Inventors: Shinya Watanabe; Satoru Makita; Motoaki Yabe; Shigebumi Arai
- Web page: https://patentgrep.com/patent/US9433216B2

## CPC

- A01N 55/02: containing metal atoms
- A01N 59/16: Heavy metals; Compounds thereof
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## Abstract

The present invention provides a construction material preservative for wood and the like that retains preservative effects over a long period of time and continuously demonstrates those effects even at low concentrations even when using in combination with an insecticide. The construction material preservative contains a water-soluble silver-amino acid complex composed of 1 molar part of silver and 1 to 3 molar parts of amino acid.

## Claims

### Claim 1

A construction material preservative comprising a water-soluble silver-histidine complex and an insecticide component, wherein
the insecticide component is acetamiprid;
the water-soluble silver-histidine complex consists of 1 molar part of silver and 1 to 3 molar parts of histidine; and
0.1 parts by weight to 40 parts by weight of the insecticide component is comprised relative to 1 part by weight of the water-soluble silver-histidine complex.

### Claim 2 (depends on 1)

The construction material preservative according to claim 1, further comprising water.

### Claim 3 (depends on 1)

The construction material preservative according claim 1, wherein 0.0001% by weight to 0.5% by weight of the water-soluble silver-histidine complex, 0.0001% by weight to 0.5% by weight of the insecticide component, and 10% by weight or more of water are comprised.

### Claim 4 (depends on 1)

A construction material processing method, comprising treating a construction material with the construction material preservative of claim 1.

### Claim 5 (depends on 4)

The construction material processing method according to claim 4, wherein the treatment is at least one type selected from the group consisting of coating treatment, immersion treatment, injection treatment, and pressurized injection treatment.

### Claim 6 (depends on 4)

A processed construction material obtained by the construction material processing method of claim 4.

### Claim 7 (depends on 6)

The processed construction material according to claim 6, wherein the processed construction material is a foamed resin insulating material or a wood.

### Claim 8

A composition comprising a water-soluble silver-histidine complex and an insecticide component, wherein
the insecticide component is acetamiprid;
the water-soluble silver-histidine complex consists of 1 molar part of silver and 1 to 3 molar parts of histidine; and
0.1 parts by weight to 40 parts by weight of the insecticide component is comprised relative to 1 part by weight of the water-soluble silver-histidine complex.