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Priority claimed from GB898909933Aexternal-prioritypatent/GB8909933D0/en
Priority claimed from GB898915490Aexternal-prioritypatent/GB8915490D0/en
Application filed by Bp Chem Int LtdfiledCriticalBp Chem Int Ltd
Publication of PT93913ApublicationCriticalpatent/PT93913A/en
The invention relates to a process for the preparation of soft low-density polyurethane foam which comprises preparing a foam formulation which includes an isocyanate component, a polyol polyester component, water and a catalyst to form methane chains in the foam formulation, and subsequently expansion with formation of the foam and hardening. The process is characterized in the use of at least one part of catalyst to formulate the polyurethane chain in the foam formulation being in the form of a salt of a bicyclic amidine. The preferred salts are the formate, the 2-ethyl hexanoate, the oleate and the phenolate of a bicyclic amidine. This process does away with the need to use chlorofluorohydrocarbons and produces a polyurethane foam which has good compression deformation properties and improved stability.
Claims (1)
1919REIVINDICAÇÕES, 1*- Processo para a preparação de espuma de poliuretano maoia e de pequena densidade, caracterizado pelo facto de compreender a preparação de uma formulação de espuma mediante mistura e um componente de isoci·· anato, um componente de poliéter-poliol, água e um catalisador para a formação de cadeias de uretano na formulação da espuma e, em seguida, a expansão desta formulação com formação de espuma e o seu endurecimento, sendo pelo menos uma parte do catalisador para a formação das cadeias de uretano na formulação de espuma usada sob a forma de um sal âc ãmidiná biolclioa. 2§- Processo de acordo com a reivindicação 1, caracterizado pelo facto de o mencionado sal de amidina bicíclica ser um formato, 2-etil-he«· xanoato, oleato ou fenolato de amidina biciclica* 3®-* Processo de acordo com as reivindicações 1 ou 2, caracterizado pe-· lo facto de o referido sal de formato de amidina bicíclica ser um formato de amidina bicíclica de fórmulaA process for the preparation of small and high density polyurethane foam comprising the preparation of a foam formulation by mixing and an isocyanate component, a polyether polyol component, water and a catalyst for the formation of urethane chains in the foam formulation, and then the expansion of this foamed formulation and its hardening, at least a part of the catalyst being for the formation of the urethane chains in the foam formulation used in the form of a benzimidazole salt. 2. A process as claimed in claim 1, wherein said bicyclic amidine salt is a bicyclic amidine 2-ethylhexanoate, oleate or phenolate formate. Claims 1 or 2, characterized in that said bicyclic amidine formate salt is a bicyclic amidine formate of formula1 2 ~ na qual os grupos R e R sao, independentemente um do outro, grupos hidrocarbilo bivalentes* 4®- Processo de acordo com a reivindicação 3, caracterizado pelo factc de o referido sal de amidina bicíclica ser ura formato duma amidina bi-olclica de fórmula I. 5®- Processo de acordo com as reivindicações 3 ou 4» caracterizado pe- 20In which the R 1 and R 2 groups are independently of one another bivalent hydrocarbyl groups. The process of claim 3, wherein said bicyclic amidine salt is a bi-cyclic amidine of formula I. A process as claimed in claim 3 or 4,1 2 lo facto de os símbolos R e R da fórmula I significarem grupos al-quileno cm 3 a 10 átomos de carbono· 6*- Processo de acordo com as reivindicações 3 ou 4 caracterizado pe- 1 2 lo facto de os símbolos R e R da fórmula I serem escolhidos de mane}, na que a amidina biclolica contém anéis hexagonais e pentagonais a-néis hexagonais e heptagonais ou dois anéis hexagonais· 7*- Processo de acordo com a reivindicação 6, caracterizado pelo facto de o citado sal de formato da amidina bicíclica ser o formato de 1,5-diazabiciolo ^4·3·θ7ηοη-5-βηο - oti 1,8-diazabiciclo -unde -7-eno· 8*— Processo de acordo com a reivindicação 6, caracterizado pelo facto de o referido sal de amidina biclolica se o 2-etil-hexanoatoole-ato ou fenolato de 1,8-diazabiciclo /~5.4»0 7 undec-7-eno. 9*- Processo de acordo com qualquer das reivindicações 1 a 8, caracterizado pelo facto de se empregar o citado sal de amidina, bicídica. numa quantidade compreendida dentro do intervalo entre 0,05 ® 0,6 par tes em peso com base na quantidade total de poliéter-poliol usada na formulação de espuma. 10a- Prooesso de acordo com qualquer das re-ivindicaçoes 1 a 8, caracterizado pelo facto de se empregar o citado sal de amidina biclolica numa quantidade compreendida entre 0,15 ® 0,2 partes em peso baseada na quantidade total do poliétil-poliol utilizada na formulação da espuma. 11*- Processo de acordo com qualquer das reivindicações 2 a 7, caracterizado pelo facto de se empregar 0,15 partes em peso de sal de for-· mato de amidina ' biclolica com base na quantidade total do poliéter-· -poliol usada na formulação da espuma. 21 eR 1 and R 2 of formula I are alkylene groups in 3 to 10 carbon atoms. A compound according to claim 3 or 4, wherein R 1 and R 2 are as defined above. R of formula I are chosen in the manner wherein the bicyclic amidine contains hexagonal and pentagonal hexagonal and hexagonal rings or two hexagonal rings. 7. A process according to claim 6, wherein said The bicyclic amidine formate is the format of 1,5-diazabicyclo [4.3.0] octane-5-β-o-1,8-diazabicycloundunde-7-ene. A process as claimed in claim 6, the fact that said bicyclic amidine salt is 1,8-diazabicyclo [4.4.0] undec-7-ene 2-ethylhexanoateoleate or phenolate. 9. A process according to any one of claims 1 to 8, wherein said amidine salt is bicyclic. in an amount in the range of 0.05-0.6 weight percent based on the total amount of polyether polyol used in the foam formulation. 10. A process as claimed in any one of claims 1 to 8, wherein said bicyclic amidine salt is employed in an amount of 0.15 Â ± 0.2 parts by weight based on the total amount of the polyether polyol used in the foam formulation. 11. A process according to any one of claims 2 to 7, wherein 0.15 parts by weight of bicyclic amidine formate salt is used based on the total amount of the polyether polyol used in formulation. 21 and12»- Processo de acordo com qualqer das reivindicações 1 a 11, carac-terizado pelo facto de se obter tuna espuma de politiretano que possui -3 uma massa volt5mica igual ou inferior a 30 Kg.m 13a- Processo de acordo com qualquer das reivindicações 1 a 12, carac- · terizado pelo facto de se fazer espandir a formulação de espuma até formar uma espuma e endurecer esta num transportador. 14a- Processo de acordo com qualquer das reivindicações 1 a 12, carac-· terizado pelo facto de se fazer espandir a formulação de espuma até formar uma espuma e indureser esta dentro de um molde. 15a- Processo de acordo com qualquer das reivindicações 1 a 4» carac-terizado pelo facto de nao se empregar nenhum derivado hidrocarbonado na formulação da espuma. Lisboa, 27 de Abril de 1990 0 Agente Oficial da Propriedade Industrial12. A process according to any one of claims 1 to 11, characterized in that a polythymethene foam having a volatile mass equal to or less than 30 kg is obtained. 1 to 12, characterized in that the foam formulation is made to foam to form a foam and hardens it on a conveyor. 14. A composition as claimed in any one of claims 1 to 12, wherein the foam formulation is made to foam to a foam and is formed into a mold. 15. A process as claimed in any one of claims 1 to 4, wherein no hydrocarbon derivative is employed in the foam formulation. Lisbon, 27 April 1990 0 Official Agent for Industrial Propertydt L' tararia da Cifhkl do Prepriedada íaáwirííl fi. Castniia, 201-3. £-1030 LISBOA Telefe. 65 13 39-6546 13of the Cifhkl of the Prepried. Castniia, 201-3. £ -1030 LISBON Telefe. 65 13 39-6546 13
PT9391390A1989-04-291990-04-27Process for the preparation of polyurethane foam
PT93913A
(en)
Reactive composition with isocyanate, process for preparing rigid polyurethane or urethane modified polyisocyanurate foams, and rigid polyurethane or polyurethane foam modified with urethane
A PROCEDURE FOR THE TREATMENT OF MINERAL LOADS WITH A PHOSPHATE COMPOUND, TREATED MINERAL LOADS, SUSPENSIONS OF MINERAL LOADS IN POLYOLS, PREMIXES OF MINERAL LOADS, USE OF PREMIXES, FOAMS OF POLYURETHANE AND COMPOSITE MORTGED QUESTS
COMPOSITION BASED ON POLYURETHANE PROVIDED WITH THE CAPACITY TO ABSORB MOISTURE, PARTICULARLY SUITABLE TO MANUFACTURE SYNTHETIC LEATHER AND ANALOGS, AND A PROCEDURE FOR PRODUCING IT.