Polyester polyols with long-chain polyether polyol building blocks and use thereof in rigid pur/pir foams
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08G-018/42
C08G-063/672
C08J-009/14
C08G-018/76
C08G-018/09
C08G-018/40
C08G-101/00
출원번호
US-0782857
(2014-04-08)
등록번호
US-9701805
(2017-07-11)
우선권정보
EP-13163407 (2013-04-11)
국제출원번호
PCT/EP2014/056976
(2014-04-08)
국제공개번호
WO2014/166898
(2014-10-16)
발명자
/ 주소
Nefzger, Hartmut
Kuenzel, Uwe
Brassat, Lutz
출원인 / 주소
Covestro Deutschland AG
대리인 / 주소
Palladino, Donald R.
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
The invention relates to a polyester polyol which contains building units which are derived from ethylene glycol and/or diethylene glycol and which is characterized in that the polyester polyol furthermore comprises building units which are derived from at least one long-chain polyester polyol with
The invention relates to a polyester polyol which contains building units which are derived from ethylene glycol and/or diethylene glycol and which is characterized in that the polyester polyol furthermore comprises building units which are derived from at least one long-chain polyester polyol with a number-average molar mass of 1500 to 8000 Da. The invention further relates to a process for the production thereof and use thereof, in particular for the production of rigid PUR/PIR foams.
대표청구항▼
1. A polyester polyol comprising structural units derived from ethylene glycol and/or diethylene glycol and structural units derived from at least one long-chain polyether polyol having a number average molar mass of 1500 to 8000 Da, wherein the polyester polyol has a hydroxyl number of 165 to 260 m
1. A polyester polyol comprising structural units derived from ethylene glycol and/or diethylene glycol and structural units derived from at least one long-chain polyether polyol having a number average molar mass of 1500 to 8000 Da, wherein the polyester polyol has a hydroxyl number of 165 to 260 mg, KOH/g, andwherein:(a) a proportion of polyester polyol, structural units derived from the long-chain polyether polyol is from 2 to 30 wt %, based on the mass of the polyester polyol;(b) a proportion of polyester polyol structural units derived from ethylene glycol and/or diethylene glycol is from 35 to 58 wt %, based on the mass of the polyester polyol; and(c) a proportion of polyester polyol structural units derived from an at least difunctional organic acid is from 40 to 75 wt %, based on the mass of the polyester polyol. 2. The polyester polyol of claim 1, wherein the polyester polyol has an OH functionality of 1.8 to 3. 3. The polyester polyol of claim 1, wherein the polyester polyol has from 50 to 100 mol % of primary hydroxyl end groups. 4. The polyester polyol of claim 1, wherein the long-chain polyether polyol has a number average molar mass of 1500 to 7000 Da. 5. The polyester polyol of claim 1, wherein the at least difunctional organic acid comprises glutaric acid, succinic acid, adipic acid, terephthalic acid, phthalic acid, isophthalic acid or a combination thereof. 6. The polyester polyol of claim 5, wherein an aromatic fraction of the polyester polyol is from 0 to 50 wt %, and where a mixture of glutaric acid, succinic acid, adipic acid and/or phthalic acid is used. 7. The polyester polyol of claim 1, wherein (a) the proportion of polyester polyol structural units derived from the long-chain polyether polyol is from 3 to 20 wt %, based on the mass of the polyester polyol;(b) the proportion of polyester polyol structural units derived from ethylene glycol and/or diethylene glycol is from 40 to 58 wt %, based on the mass of the polyester polyol; and(c) the proportion of polyester polyol structural units derived from the at least difunctional organic acid is from 50 to 70 wt %, based on the mass of the polyester polyol. 8. The polyester polyol of claim 1, wherein the long-chain polyether polyol has a number average molar mass of 3500 to 8000 Da. 9. The polyester polyol of claim 1, wherein the long-chain polyether polyol has a number average molar mass of 4000 to 8000 Da. 10. The polyester polyol of claim 1, wherein the long-chain polyether polyol has a number average molar mass of 3500 to 6000 Da. 11. The polyester polyol of claim 1, herein the long-chain polyether polyol has a number average molar mass of 4000 to 6000 Da. 12. A method of preparing the polyester polyol of claim 1, comprising reacting the at least difunctional organic acid with the ethylene glycol and/or diethylene glycol and the at least one long-chain polyether polyol having a number average molar mass of 1500 to 8000 Da, optionally in the presence of at least one catalyst. 13. A method of using the polyester polyol of claim 1 comprising including the polyester polyol in a 1-phase polyol component of a two-component reaction system for producing rigid PUR/PIR foams, wherein the 1-phase polyol component is free from flame retardants. 14. A reaction system for producing rigid PUR/PIR foams, comprising: A) an organic polyisocyanate component,B) a polyol component,C) optionally auxiliary and added-substance materials and also blowing and co-blowing agent,wherein said organic polyisocyanate component A) and said polyol component B) are used in such a mixing ratio relative to each other as to produce an index of 100 to 500 whereinsaid polyol component B) comprises the polyester polyol of claim 1. 15. The reaction system of claim 14, wherein the weight ratio between components B) and A) is from 100:150 to 100:300. 16. A method of manufacturing a rigid PUR/PIR foam, which comprises mixing and reacting said components A) and B) and also optionally C) of the reaction system of claim 14. 17. A rigid foam obtained by mixing and reacting said components A) and B) and also optionally C) of the reaction system of claim 14. 18. The rigid foam of claim 17, wherein the rigid foam is in the form of an insulating panel or of a composite element having flexible or non-flexible outer layers and has a density of 25 to 65 kg/m3, or is in the form of a slabstock foam and has a density of 25 to 300 kg/m3.
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