GB1520846A - Isocyanates - Google Patents
IsocyanatesInfo
- Publication number
- GB1520846A GB1520846A GB21061/76A GB2106176A GB1520846A GB 1520846 A GB1520846 A GB 1520846A GB 21061/76 A GB21061/76 A GB 21061/76A GB 2106176 A GB2106176 A GB 2106176A GB 1520846 A GB1520846 A GB 1520846A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tolylene diisocyanate
- oxypropylated
- mixture
- polyisocyanate composition
- tolylene
- 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.)
- Expired
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
- C08G18/80—Masked polyisocyanates
- C08G18/8003—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen
- C08G18/8006—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32
- C08G18/8009—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203
- C08G18/8022—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203 with polyols having at least three hydroxy groups
- C08G18/8029—Masked aromatic polyisocyanates
-
- 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
- C08G18/089—Reaction retarding agents
-
- 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
- C08G18/4829—Polyethers containing at least three hydroxy groups
-
- 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
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/7806—Nitrogen containing -N-C=0 groups
- C08G18/7818—Nitrogen containing -N-C=0 groups containing ureum or ureum derivative groups
- C08G18/7837—Nitrogen containing -N-C=0 groups containing ureum or ureum derivative groups containing allophanate groups
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
1520846 Polyisocyanate compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 7 April 1977 [21 May 1976] 21061/76 Heading C3R A polyisocyanate composition is manufactured by a process which comprises reacting at least 4 molar proportions of tolylene diisocyanate with 1 molar proportion of an oxypropylated triol of molecular weight 200 to 800 in the absence of an alkylating agent under reaction conditions such that further reaction, e.g. allophanate formation, takes place after the primary urethane formation at a temperature of 120‹ C. or above. Preferably 4 to 30 molar proportions of tolylene diisocyanate are used. The tolylene diisocyanate is preferably an 80 : 20 mixture of 2,4- and 2,6-tolylene diisocyanates. The preferred oxypropylated triol is oxypropylated glycerol. A stabilizing agent, preferably an acid chloride, may, be present during the reaction. The resulting polyisocyanate composition is generally a liquid and it may be blended with a mixture of methylene bridged polyphenyl polyisocyanates and/or tolylene diisocyanate and can be used in the manufacture of a polyurethane foam by reacting the polyisocyanate composition with a polymer having at least two isocyanate reactive end groups, especially a polyether polyol, under conditions such that a foam-forming gas is produced. Suitable polyether polyols are polyoxypropylene and poly(oxypropylene)(oxyethylene) polyols having from 2 to 4 hydroxyl groups and preferably have molecular weights of from 1000 to 10,000. The foam-forming reaction mixture may contain conventional additives, e.g. blowing agents, catalysts, surfactants, cross-linkers orchain-lengtheners, flame-retardants and fillers. In a typical Example a liquid polyisocyanate composition prepared by reacting 10 moles of an 80/20, 2,4/2,6-tolylene diisocynate mixture with 1 mole of an oxypropylated glycerol of M.Wt. 310 in the presence of benzoyl chloride is diluted with 80/20, 2,4/2,6-tolylene diisocyanate and then blended with crude methylene bridged polyphenyl polyisocyanate and is then used to prepare a flexible polyurethane foam moulding from a formulation which additionally comprises an ethylene oxide tipped oxypropylated glycerol (M.Wt. 5300), water, triethylene diamine, dimethylamino ethanol, oxyethylated octylphenol and a polydimethyl siloxane.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB21061/76A GB1520846A (en) | 1976-05-21 | 1976-05-21 | Isocyanates |
DE19772718512 DE2718512A1 (en) | 1976-05-21 | 1977-04-26 | METHOD FOR PREPARING POLYISOCYANATE COMPOSITIONS |
IT23060/77A IT1125749B (en) | 1976-05-21 | 1977-04-29 | PROCESS FOR THE PRODUCTION OF LIQUID POLYISOCYANATES BY REACTING TOLYL N DIISOCYANATE WITH AN OXYPROPILATED TRIOL |
NL7704842A NL7704842A (en) | 1976-05-21 | 1977-05-03 | PROCESS FOR THE PREPARATION OF POLYISOCYANATE COMPOSITIONS. |
BE177624A BE854695A (en) | 1976-05-21 | 1977-05-16 | ISOCYANATES |
SE7705806A SE7705806L (en) | 1976-05-21 | 1977-05-17 | POLYISOCYANATE COMPOSITIONS AND THEIR PREPARATION |
FR7715589A FR2352011A1 (en) | 1976-05-21 | 1977-05-20 | ISOCYANATES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB21061/76A GB1520846A (en) | 1976-05-21 | 1976-05-21 | Isocyanates |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1520846A true GB1520846A (en) | 1978-08-09 |
Family
ID=10156545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB21061/76A Expired GB1520846A (en) | 1976-05-21 | 1976-05-21 | Isocyanates |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE854695A (en) |
DE (1) | DE2718512A1 (en) |
FR (1) | FR2352011A1 (en) |
GB (1) | GB1520846A (en) |
IT (1) | IT1125749B (en) |
NL (1) | NL7704842A (en) |
SE (1) | SE7705806L (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0915111A1 (en) * | 1997-11-10 | 1999-05-12 | Bayer Corporation | Flexible foams and flexible molded foams based on liquid isocyanate-terminated allophanate-modified MDI prepolymer blends and processes for the production of these foams |
US6028158A (en) * | 1997-12-31 | 2000-02-22 | Bayer Corporation | Freeze-stable allophanate-modified toluene diisocyanate trimers |
US6127308A (en) * | 1997-12-31 | 2000-10-03 | Bayer Corporation | Trimer catalyst system for aliphatic and aromatic isocyanates |
US6271279B1 (en) | 2000-07-10 | 2001-08-07 | Bayer Corporation | High resilient flexible urethane foam and flexible molded foams based on allophanate modified isocyanates |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2513642B1 (en) * | 1981-09-25 | 1985-08-09 | Ugine Kuhlmann | MODIFIED CRUDE TOLUENE DIISOCYANATE FOR IMPROVED HIGH RESILIENCE POLYURETHANE FOAMS |
US4866103A (en) * | 1987-10-16 | 1989-09-12 | Ici Americas Inc. | Polyisocyanate compositions |
DE4328076A1 (en) * | 1993-08-20 | 1995-02-23 | Bayer Ag | Process for the production of soft foams containing urethane groups |
KR101954346B1 (en) * | 2017-12-27 | 2019-03-05 | 에스케이씨 주식회사 | Isocyanate composition with improved stability and reactivity, and optical lens using the same |
-
1976
- 1976-05-21 GB GB21061/76A patent/GB1520846A/en not_active Expired
-
1977
- 1977-04-26 DE DE19772718512 patent/DE2718512A1/en active Pending
- 1977-04-29 IT IT23060/77A patent/IT1125749B/en active
- 1977-05-03 NL NL7704842A patent/NL7704842A/en not_active Application Discontinuation
- 1977-05-16 BE BE177624A patent/BE854695A/en unknown
- 1977-05-17 SE SE7705806A patent/SE7705806L/en unknown
- 1977-05-20 FR FR7715589A patent/FR2352011A1/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0915111A1 (en) * | 1997-11-10 | 1999-05-12 | Bayer Corporation | Flexible foams and flexible molded foams based on liquid isocyanate-terminated allophanate-modified MDI prepolymer blends and processes for the production of these foams |
US6028158A (en) * | 1997-12-31 | 2000-02-22 | Bayer Corporation | Freeze-stable allophanate-modified toluene diisocyanate trimers |
US6063891A (en) * | 1997-12-31 | 2000-05-16 | Bayer Corporation | Freeze stable allophanate-modified toluene diisocyanate trimers |
US6127308A (en) * | 1997-12-31 | 2000-10-03 | Bayer Corporation | Trimer catalyst system for aliphatic and aromatic isocyanates |
US6271279B1 (en) | 2000-07-10 | 2001-08-07 | Bayer Corporation | High resilient flexible urethane foam and flexible molded foams based on allophanate modified isocyanates |
Also Published As
Publication number | Publication date |
---|---|
FR2352011A1 (en) | 1977-12-16 |
BE854695A (en) | 1977-11-16 |
NL7704842A (en) | 1977-11-23 |
SE7705806L (en) | 1977-11-22 |
DE2718512A1 (en) | 1977-12-08 |
IT1125749B (en) | 1986-05-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |