CA2251462A1 - Prepolymers with low monomeric tdi contents - Google Patents
Prepolymers with low monomeric tdi contentsInfo
- Publication number
- CA2251462A1 CA2251462A1 CA002251462A CA2251462A CA2251462A1 CA 2251462 A1 CA2251462 A1 CA 2251462A1 CA 002251462 A CA002251462 A CA 002251462A CA 2251462 A CA2251462 A CA 2251462A CA 2251462 A1 CA2251462 A1 CA 2251462A1
- Authority
- CA
- Canada
- Prior art keywords
- weight
- prepolymer
- less
- polyether
- toluene diisocyanate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
Abstract
This invention relates to novel liquid toluene diisocyanate/
polyether/polymethylene poly(phenylisocyanate) prepolymers having an NCO content of from about 2 to 20%, a viscosity or about 10,000 mPa.s or less at 25°C, and which contains about 1.0% or less of monomeric TDI. This invention also relates to a process for the preparation of these liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymers.
polyether/polymethylene poly(phenylisocyanate) prepolymers having an NCO content of from about 2 to 20%, a viscosity or about 10,000 mPa.s or less at 25°C, and which contains about 1.0% or less of monomeric TDI. This invention also relates to a process for the preparation of these liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymers.
Claims (20)
1. A liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer having an NCO content of from 2 to 20%, a viscosity of about 10,000 mPa.s or less at 25°C, and containing about 1.0% or less of monomeric TDI, wherein said prepolymer is prepared by mixing:
A) 13 to 98 parts by weight of a TDI isocyanate-terminated prepolymer having an NCO content of about 3.2% or less, and which is prepared by reacting:
1) 2,4-toluene diisocyanate, and
A) 13 to 98 parts by weight of a TDI isocyanate-terminated prepolymer having an NCO content of about 3.2% or less, and which is prepared by reacting:
1) 2,4-toluene diisocyanate, and
2) at least one polyether polyol having a number average molecular weight of at least about 3000 up to about 8000, containing two hydroxyl groups, and being the reaction product of a) an alkylene oxide, with b) one or more starter compounds containing at least 2 carbon atoms, at an NCO:OH ratio of about 1.3 to about 2.3;
with B) 2 to 87 parts by weight of a liquid polyisocyanate of the diphenylmethane series having an NCO content of from 18 to 33.6%, wherein the parts by weight of A) and B) total 100 parts by weight.
2. The liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer of Claim 1, wherein said prepolymer has an NCO content of from 4 to 15%, a viscosity of about 6,000 mPa.s or less at 25°C, and a free monomeric TDI content of about 0.5% or less.
with B) 2 to 87 parts by weight of a liquid polyisocyanate of the diphenylmethane series having an NCO content of from 18 to 33.6%, wherein the parts by weight of A) and B) total 100 parts by weight.
2. The liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer of Claim 1, wherein said prepolymer has an NCO content of from 4 to 15%, a viscosity of about 6,000 mPa.s or less at 25°C, and a free monomeric TDI content of about 0.5% or less.
3. The liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer of Claim 1, wherein said prepolymer has an NCO content of from 8 to 12%, a viscosity of about 3,000 mPa.s or less at 25°C, and a monomeric TDI content of about 0.3% or less.
4. The liquid toluene diisocyanate/polyether/polymethylene polyisocyanate prepolymer of Claim 1, wherein A) said TDI
isocyanate-terminated prepolymer has an NCO content of about 2.5% or less, and is prepared by reacting: 1) 2,4-toluene diisocyanate, and 2) at least one polyether polyol having a number average molecular weight of at least about 4000 up to about 8000, containing two hydroxyl groups.
isocyanate-terminated prepolymer has an NCO content of about 2.5% or less, and is prepared by reacting: 1) 2,4-toluene diisocyanate, and 2) at least one polyether polyol having a number average molecular weight of at least about 4000 up to about 8000, containing two hydroxyl groups.
5. The liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer of Claim 1, wherein A)2) said polyether polyol comprises the reaction product of a) propylene oxide, and b) one or more starter compounds containing at least 2 carbon atoms.
6. The liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer of Claim 5, wherein A)2) said polyether polyol comprises the reaction product of a) propylene oxide, and b) 1,2-propylene glycol.
7. The liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer of Claim 1, wherein B) said liquid polyisocyanate of the diphenylmethane series has an NCO content of from about 23 to about 33.6%.
8. The liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer of Claim 1, wherein B) said liquid polyisocyanate of the diphenylmethane series has an NCO content of from about 30 to 33.6%.
9. The liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer of Claim 1, wherein B) said liquid polyisocyanate of the diphenylmethane series comprises about 30 to about 98% by weight of the 4,4'-isomer of MDI, about 2 to about 70% by weight of the 2,4'-isomer of MDI and about 0 to about 5% by weight of the 2,2'-isomer of MDI, with the %'s by weight totaling 100%.
10. The liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer of Claim 1, wherein B) said liquid polyisocyanate of the diphenylmethane series has an average isocyanate functionality of about 2.1 to about 3.5, and comprises about 30 to about 96% by weight of monomeric 4,4'-MDI, about 2 to about 70% by weight monomeric 2,4'-MDI and less than 5% by weight of monomeric 2,2'-MDI, and from about 2 to about 60% by weight of higher ring homologues of the MDI series.
11. A process for the preparation of a liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer having an NCO content of from 2 to 20%, a viscosity of about 10,000 mPa.s or less at 25°C, and containing about 1.0% or less of monomeric TDI, comprising mixing:
A) 13 to 98 parts by weight of a TDI isocyanate-terminated prepolymer having an NCO content of about 3.2% or less, and which is prepared by reacting:
1) 2,4-toluene diisocyanate, and 2) at least one polyether polyol having a number average molecular weight of at least about 3000 up to about 8000, containing two hydroxyl groups, and being the reaction product of:
a) an alkylene oxide, with b) one or more starter compounds containing at least 2 carbon atoms, at an NCO:OH ratio of about 1.3 to about 2.3;
with B) 2 to 87 parts by weight of a liquid polyisocyanate of the diphenylmethane series having an NCO content of from 18 to 33.6%, wherein the parts by weight of A) and B) total 100 parts by weight.
A) 13 to 98 parts by weight of a TDI isocyanate-terminated prepolymer having an NCO content of about 3.2% or less, and which is prepared by reacting:
1) 2,4-toluene diisocyanate, and 2) at least one polyether polyol having a number average molecular weight of at least about 3000 up to about 8000, containing two hydroxyl groups, and being the reaction product of:
a) an alkylene oxide, with b) one or more starter compounds containing at least 2 carbon atoms, at an NCO:OH ratio of about 1.3 to about 2.3;
with B) 2 to 87 parts by weight of a liquid polyisocyanate of the diphenylmethane series having an NCO content of from 18 to 33.6%, wherein the parts by weight of A) and B) total 100 parts by weight.
12. The process of Claim 11, wherein said liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer has an NCO content of from 4 to 15%, a viscosity of about 6,000 mPa.s or less at 25°C, and a monomeric TDI content of about 0.5% or less.
13. The process of Claim 11, wherein said liquid toluene diisocyanate/polyether/polymethylene poly(phenylisocyanate) prepolymer has an NCO content of from 8 to 12%, a viscosity of about 3,000 mPa.s or less at 25°C, and a monomeric TDI content of about 0.3% or less.
14. The process of Claim 11, wherein A) said TDI
isocyanate-terminated prepolymer has an NCO content of about 2.5% or less, and is prepared by reacting: 1) 2,4-toluene diisocyanate, and 2) at least one polyether polyol having a number average molecular weight of at least about 4000 up to about 8000, containing two hydroxyl groups.
isocyanate-terminated prepolymer has an NCO content of about 2.5% or less, and is prepared by reacting: 1) 2,4-toluene diisocyanate, and 2) at least one polyether polyol having a number average molecular weight of at least about 4000 up to about 8000, containing two hydroxyl groups.
15. The process of Claim 11, wherein A)2) said polyether polyol comprises the reaction product of a) propylene oxide, and b) one or more starter compounds containing at least 2 carbon atoms.
16. The process of 15, wherein A)2) said polyether polyol comprises the reaction product of a) propylene oxide, and b) 1, 2-propylene glycol.
17. The process of Claim 11, wherein B) said liquid polyisocyanate of the diphenylmethane series has an NCO content of from about 23 to about 33.6%.
18. The process of Claim 11, wherein B) said liquid polyisocyanate of the diphenylmethane series has an NCO content of from about 30 to 33.6%.
19. The process of Claim 11, wherein B) said liquid polyisocyanate of the diphenylmethane series comprises about 30 to about 98% by weight of the 4,4'-isomer of MDI, about 2 to about 70% by weight of the 2,4'-isomer of MDI and about 0 to about 5% by weight of the 2,2'-isomer of MDI, with the %'s by weight totaling 100%.
20. The process of Claim 11, wherein B) said liquid polyisocyanate of the diphenylmethane series has an average isocyanate functionality of about 2.1 to about 3.5, and comprises about 30 to about 96% by weight of monomeric 4,4'-MDI, about 2 to about 70% by weight monomeric 2,4'-MDI and less than 5% by weight of monomeric 2,2'-MDI, and from about 2 to about 60% by weight of higher ring homologues of the MDI series.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/963,179 | 1997-11-03 | ||
| US08/963,179 US5817734A (en) | 1997-11-03 | 1997-11-03 | Prepolymers with low TDI content |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2251462A1 true CA2251462A1 (en) | 1999-05-03 |
| CA2251462C CA2251462C (en) | 2009-12-29 |
Family
ID=25506856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002251462A Expired - Fee Related CA2251462C (en) | 1997-11-03 | 1998-10-23 | Prepolymers with low monomeric tdi contents |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5817734A (en) |
| CA (1) | CA2251462C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5925781A (en) * | 1997-11-03 | 1999-07-20 | Bayer Corporation | Prepolymers with low monomeric TDI content |
| US20030010442A1 (en) * | 2001-07-09 | 2003-01-16 | Nowicki James W. | Reactive hot melt adhesive |
| US20050282989A1 (en) * | 2004-06-17 | 2005-12-22 | Rosthauser James W | TDI prepolymers with improved processing characteristics |
| EP2262842B1 (en) | 2008-03-28 | 2018-01-24 | Polytex Sportbeläge Produktions-GmbH | 2,2'-mdi-based isocyanate mixtures and the production and use thereof |
| NZ612548A (en) | 2010-12-20 | 2015-06-26 | Akzo Nobel Coatings Int Bv | Mdi based linings and membranes from prepolymers with very low free monomeric isocyanates |
| DE102011080513A1 (en) * | 2011-08-05 | 2013-02-07 | Henkel Ag & Co. Kgaa | Low-monomer polyurethane foams |
| TWI743831B (en) * | 2019-06-17 | 2021-10-21 | 南韓商Ｓｋｃ索密思股份有限公司 | Composition for polishing pad, polishing pad and preparation method of semiconductor device |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3183112A (en) * | 1955-12-06 | 1965-05-11 | Bayer Ag | Isocyanates and method of preparing same |
| US3115481A (en) * | 1958-04-07 | 1963-12-24 | Mobay Chemical Corp | Polyurethane collapsed foam elastomer |
| US3248372A (en) * | 1960-11-08 | 1966-04-26 | Bayer Ag | Glycol modified isocyanurate containing polyisocyanates |
| US3384624A (en) * | 1965-03-01 | 1968-05-21 | Mobay Chemical Corp | Prepolymer composition |
| US3600358A (en) * | 1969-01-28 | 1971-08-17 | Allied Chem | Polyurethane-urea elastomers prepared from 4,4'-methylene bis (cyclohexyl-isocyanate),neopentyl adipate and an aromatic diamine |
| US3637599A (en) * | 1970-02-16 | 1972-01-25 | Goodyear Tire & Rubber | Method of producing polyurethanes and said product |
| US3766148A (en) * | 1971-05-17 | 1973-10-16 | Allied Chem | Polyurethane elastomers prepared from 4,4 - methylene-bis(cyclohexyl isocyanate),polyol and methylene dianiline |
| US3789032A (en) * | 1971-06-22 | 1974-01-29 | Du Pont | Polyurethane-polyurea elastomers based on high trans-trans,4,4'-methylenebis-(cyclohexyl isocyanate) |
| IT967742B (en) * | 1972-09-22 | 1974-03-11 | Montedison Spa | PROCEDURE FOR THE PREPARATION OF HIGH MOLECULAR WEIGHT POLYISOCYANATES |
| JPS532199B2 (en) * | 1973-07-03 | 1978-01-26 | ||
| US3997514A (en) * | 1975-04-30 | 1976-12-14 | E. I. Du Pont De Nemours And Company | Polyurethane elastomers having a compression set of 50 or less |
| US4061662A (en) * | 1975-08-28 | 1977-12-06 | W. R. Grace & Co. | Removal of unreacted tolylene diisocyanate from urethane prepolymers |
| DE2547866A1 (en) * | 1975-10-25 | 1977-05-05 | Basf Ag | HEAT-RESISTANT POLYURETHANE ELASTOMERS |
| US4544763A (en) * | 1984-10-19 | 1985-10-01 | Basf Wyandotte Corporation | Polyisocyanate binder having low toluene diisocyanate content |
| US4683279A (en) * | 1986-07-08 | 1987-07-28 | Air Products And Chemicals, Inc. | Low melting urethane linked toluenediisocyanates |
| US5202001A (en) * | 1989-09-26 | 1993-04-13 | Air Products And Chemicals, Inc. | Preparation of urethane prepolymers having low levels of residual toluene diisocyanate |
| US5051152A (en) * | 1989-09-26 | 1991-09-24 | Air Products And Chemicals, Inc. | Preparation of urethane prepolymers having low levels of residual toluene diisocyanate |
| US5646230A (en) * | 1995-12-21 | 1997-07-08 | Bayer Corporation | Isocyanate-terminated prepolymers, a process of producing polyurethane/polyurea elastomers therefrom, and the resultant elastomers |
-
1997
- 1997-11-03 US US08/963,179 patent/US5817734A/en not_active Expired - Lifetime
-
1998
- 1998-10-23 CA CA002251462A patent/CA2251462C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5817734A (en) | 1998-10-06 |
| CA2251462C (en) | 2009-12-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20141023 |