Compact veneer based on polyisocyanate polyaddition products
US6770730B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1999 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Nov 15, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/4854
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A compact veneer is based on a reaction mixture comprisinga) isocyanate,b) as compounds which are reactive toward isocyanates, a mixture (b1) comprising:b11) from 15 to 90% by weight, preferably from 50 to 80% by weight, based on the weight of the mixture (b1), of at least one polyether polyalcohol having a molecular weight of from 400 to 6000, preferably from 1000 to 4000 and a mean functionality of from 1.5 to 3 and based on hydroxyl-containing initiator substances and propylene oxide and also, if desired, ethylene oxide,b12) from 0 to 20% by weight, preferably from 0 to 10% by weight, based on the weight of the mixture (b1), of at least one polyether polyalcohol having a molecular weight of from 400 to 6000, preferably from 400 to 4000, and a mean functionality of from 1.5 to 3 and based on amino-containing initiator substances and propylene oxide and also, if desired, ethylene oxide,b13) from 0 to 35% by weight, preferably from 2 to 15% by weight, based on the weight of the mixture (b1), of at least one polyether polyalcohol having a molecular weight of from 150 to 7000 and a mean functionality of from 2.1 to 5, preferably from 3.1 to 5,b14) from 0 to 30% by weight, preferably …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.