GB1528045A

GB1528045A – Polyisocyanates
– Google Patents

GB1528045A – Polyisocyanates
– Google Patents
Polyisocyanates

Info

Publication number
GB1528045A

GB1528045A
GB3285275A
GB3285275A
GB1528045A
GB 1528045 A
GB1528045 A
GB 1528045A
GB 3285275 A
GB3285275 A
GB 3285275A
GB 3285275 A
GB3285275 A
GB 3285275A
GB 1528045 A
GB1528045 A
GB 1528045A
Authority
GB
United Kingdom
Prior art keywords
diisocyanate
tri
diphenylmethane
diphenylmethane diisocyanate
glycol
Prior art date
1976-06-28
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

Application number
GB3285275A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Imperial Chemical Industries Ltd

Original Assignee
Imperial Chemical Industries Ltd
Priority date (The priority date 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 date listed.)
1976-06-28
Filing date
1976-06-28
Publication date
1978-10-11

1976-06-28
Application filed by Imperial Chemical Industries Ltd
filed
Critical
Imperial Chemical Industries Ltd

1976-06-28
Priority to GB3285275A
priority
Critical
patent/GB1528045A/en

1978-10-11
Publication of GB1528045A
publication
Critical
patent/GB1528045A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur

C08G18/78—Nitrogen

C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates

C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine 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

C08G18/80—Masked polyisocyanates

C08G18/8003—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen

Abstract

1528045 Diphenylmethane diisocyanate composition IMPERIAL CHEMICAL INDUSTRIES Ltd 28 June 1976 [6 Aug 1975] 32852/75 Heading C3R A diphenylmethane diisocyanate composition comprises diphenylmethane diisocyanate or uretonimine modified diphenylmethane diisocyanate, in which from 3À5-35% of the isocyanate groups have been reacted with either (1) a di- or tri-hydroxy compound of the formula wherein R and R1 are hydrogen, phenyl or saturated hydrocarbon groups or one of R and R1 but not both may be chloromethyl, n is zero or an integer from 1-6, p is 1-10, m is 2 or 3 and X is C=O, S=O, SO 2 , #P=O, O=P(R11)=, wherein R11 is hydrocarbyl, or X is the residue of a di- or tricarboxylic or carbamic acid, or (2) a mixture of di- or tri-hydroxy compounds containing at least 50% wt. of a di- or tri-hydroxy compound of the above formula, the remainder being a further diol or triol. The diphenyl-methane diisocyanate may be the 4,41 and/or the 2,41 isomer(s). The uretonimine modified diphenylmethane diisocyanate is preferably one in which from 3À5 to 35% of the NCO groups were first converted to carbodiimide groups followed by uretonimine -formation. Examples of di- or tri-hydroxy compounds of the above formula are bis-2-hydroxypropyloxalate, -succinate, -glutarate, -adipate, or -carbonate and analogues based on dipropylene glycol or polypropylene glycols. Examples of further diols are those of the formula where R, R1, n and p are as defined above. Suitable such diols are polyethylene glycol, di- or tri-propylene glycol, polypropylene glycol, 1,3-butane-diol, 1,6-hexanediol and 1,4-bishydroxymethylbenzene. Stabilizers, e.g. benzoyl chloride, thionyl chloride, adipic acid, phosphoric acid or anti-oxidants may be added before, during or after the reaction of the diisocyanate and the hydroxy compound(s). The liquid polyisocyanate compositions can be used in the manufacture of polyurethanes, particularly microcellular polyurethane foams. In the Examples liquid polyisocyanate compositions are prepared (1) by reacting diphenylmethane- 4,41-diisocyanate with either a dipropylene glycol/terephthalic acid oligomer or a propylene glycol/terephthalic acid oligomer; or (2) by reacting a dipropylene glycol/phosgene reaction product with diphenylmethane-4,41-diisocyanate, or a uretonimine modified diphenylmethane-4,41-diisocyanate in the presence of benzoyl chloride, or a mixture of the 4,41– and 2,41– (81 : 18) isomers of diphenylmethane diisocyanate.

GB3285275A
1976-06-28
1976-06-28
Polyisocyanates

Expired

GB1528045A
(en)

Priority Applications (1)

Application Number
Priority Date
Filing Date
Title

GB3285275A

GB1528045A
(en)

1976-06-28
1976-06-28
Polyisocyanates

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

GB3285275A

GB1528045A
(en)

1976-06-28
1976-06-28
Polyisocyanates

Publications (1)

Publication Number
Publication Date

GB1528045A
true

GB1528045A
(en)

1978-10-11

Family
ID=10344978
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB3285275A
Expired

GB1528045A
(en)

1976-06-28
1976-06-28
Polyisocyanates

Country Status (1)

Country
Link

GB
(1)

GB1528045A
(en)

Cited By (1)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

EP0013487A1
(en)

*

1978-12-11
1980-07-23
Imperial Chemical Industries Plc
Modified diisocyanate compositions and polyurethanes thereof

1976

1976-06-28
GB
GB3285275A
patent/GB1528045A/en
not_active
Expired

Cited By (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

EP0013487A1
(en)

*

1978-12-11
1980-07-23
Imperial Chemical Industries Plc
Modified diisocyanate compositions and polyurethanes thereof

US4448938A
(en)

*

1978-12-11
1984-05-15
Imperial Chemical Industries Plc
Modified isocyanate compositions, their production and uses for polyurethane manufacture

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Legal Events

Date
Code
Title
Description

1979-01-31
PS
Patent sealed

1982-02-03
PCNP
Patent ceased through non-payment of renewal fee

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