[특허]Cure rebond binder

Cure rebond binder 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08G-018/18
출원번호	US-0201886 (2005-08-11)
등록번호	US-8501828 (2013-08-06)
발명자 / 주소	Hennington, Roger Ridgway, Donald H. Grigsby, Jr., Robert A. Sawitski, Jr., Robert G. Pratt, Jennifer K.
출원인 / 주소	Huntsman Petrochemical LLC
대리인 / 주소	Raub, Monique M.
인용정보	피인용 횟수 : 0 인용 특허 : 86

초록 ▼

The present invention provides processes for producing re-bonded polyurethane foam constructs that are useful in applications such as carpet underlayments. According to the invention, a tertiary amine is employed as a catalyst either alone, or preferably in combination with other catalysts in a binder which comprises an organic isocyanate and a polyol. Inclusion of a tertiary amine as a catalyst dramatically increases production throughput.

대표청구항 ▼

1. A process for producing a cured polyurethane foam article that comprises particles of one or more polyurethane foams bonded together with a binder, which process consisting of: a) forming a mixture consisting of: i) a plurality of particles of polyurethane foam; ii) a prepolymer made from an organic isocyanate and a polyol; iii) a catalyst of 2,2′- dimorpholinodiethylether; and iv) optionally a surfactant, an organic or silicon based extender oil, an ester, a solvent or a blowing agent; and b) curing said mixture by contacting it with steam. 2. The process according to claim 1 which is carried out at any temperature in the range of about 0° C. to about 400° C. 3. The process according to claim 1 which is carried out at any pressure in the range of about 0 psi to about 1000 psi. 4. The process according to claim 1 wherein the catalyst is present in an amount in the range of about 0.01% to about 2.00% by weight based on the total weight of the finished foam article. 5. The process according to claim 1 wherein the average size of said particles is such that their average longest length diameter is any value in the range of about 0.5 cm to about 15 cm. 6. The process according to claim 1 wherein said mixture contains at least one surfactant. 7. The process according to claim 1 wherein said mixture contains at least one silicone surfactant. 8. A method consisting of: coating a plurality of polyurethane foam particles with a binder system, said binder system consisting of an organic isocyanate, a polyol, a catalyst of 2,2′- dimorpholinodiethylether and optionally a surfactant, an organic or silicon based extender oil, an ester, a solvent or a blowing agent;compressing the coated polyurethane particles; andcuring the coated polyurethane particles with steam. 9. The method of claim 8 wherein the coating includes coating the plurality of polyurethane foam particles with the binder in a mixing apparatus. 10. The method of claim 8 wherein said coating includes adding said binder system to said polyurethane foam particles as a single mixture of binder components. 11. The method of claim 8 wherein coating includes forming a prepolymer with the organic isocyanate and the polyol and adding the resultant prepolymer to the polyurethane foam particles in one stream, and adding the catalyst to the polyurethane foam particles in another, different stream, both streams added to a same mixing apparatus. 12. The method of claim 8 wherein compressing includes transferring the coated polyurethane foam particles to a pressing apparatus and applying a force to compress the coated polyurethane foam particles. 13. The method of claim 12 wherein curing includes, during compression, allowing the steam to treat the coated polyurethane foam particles. 14. A process for producing a cured polyurethane foam article comprising: a) forming a mixture consisting of: i) a plurality of particles of polyurethane foam; ii) a prepolymer made from an organic isocyanate and a polyol; iii) a catalyst of 2,2′- dimorpholinodiethylether; and iv) optionally a surfactant, an organic or silicon based extender oil, an ester, a solvent or a blowing agent; and b) curing said mixture by contacting it with steam; and wherein the cured polyurethane foam article consists of the cured mixture. 15. The process according to claim 14 which is carried out at any temperature in the range of about 0° C. to about 400° C. 16. The process according to claim 14 which is carried out at any pressure in the range of about 0 psi to about 1000 psi. 17. The process according to claim 14 wherein the catalyst is present in an amount in the range of about 0.01% to about 2.00% by weight based on the total weight of the finished foam article.

이 특허에 인용된 특허 (86)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Cure rebond binder 원문보기

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