Patent Number: 
Section: claims

1. A near infrared ray-absorbing synthetic resin composition comprising a synthetic resin, and the following component (A) and/or component (B) dispersed in the synthetic resin: Component (A): a component composed of a copper ion and a phosphate compound represented by the following formula (1); and/or  Component (B): a component composed of a compound obtained by reacting a phosphate compound represented by the following formula (1) with a copper salt  wherein groups R independently mean a group represented by the following formula (2) or (3), and n is 1 or 2:  wherein R 1  denotes an alkyl group having 1 to 20 carbon atoms, R 2  represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and m is an integer of 1 to 6. 2. The near infrared ray-absorbing synthetic resin composition according to  claim 1 , wherein the component (B) is composed of the phosphate copper compound represented by the following formula (6) or (7):  claim 1 wherein groups R independently mean a group represented by the following formula (2) or (3), and M denotes a copper ion:  wherein R 1  denotes an alkyl group having 1 to 20 carbon atoms, R 2  represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and m is an integer of 1 to 6. 3. The near infrared ray-absorbing synthetic resin composition according to  claim 1 , wherein the content of the copper ion is 0.1 to 5% by weight based on the total weight of the composition. claim 1 4. The near infrared ray-absorbing synthetic resin according to  claim 1 , wherein R 2  in the formulae (2) and (3) representing the group R in the phosphate compound represented by the formula (1), is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. claim 1 5. The near infrared ray-absorbing synthetic resin composition according to  claim 1 , wherein m in the formulae (2) and (3) representing the group R in the phosphate compound represented by the formula (1), is an integer of 1 to 3. claim 1 6. The near infrared ray-absorbing synthetic resin composition according to  claim 1 , wherein the content of the copper ion is 0.3 to 4% by weight based on the total weight of the composition. claim 1 7. A near infrared ray-absorbing synthetic resin composition according to  claim 1 , wherein the content of the copper ion is 0.5 to 3% by weight based on the total weight of the composition. claim 1 8. The near infrared ray-absorbing synthetic resin composition according to  claim 1 , wherein the synthetic resin is acrylic resin. claim 1 9. The near infrared ray-absorbing synthetic resin composition according to  claim 2 , wherein the synthetic resin is acrylic resin. claim 2 10. The near infrared ray-absorbing synthetic resin composition according to  claim 3 , wherein the synthetic resin is acrylic resin. claim 3 11. The near infrared ray-absorbing synthetic resin composition according to  claim 4 , wherein the synthetic resin is acrylic resin. claim 4 12. The near infrared ray-absorbing synthetic resin composition according to  claim 11 , wherein m in the formulae (2) and (3) representing the group R in the phosphate compound represented by the formula (1), is an integer of 1 to 3. claim 11