Hydrophile polyurethane foam, process for preparing said foam and hydrophile product based on said foam
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08G-018/14
C08G-018/20
B32B-027/40
출원번호
US-0776681
(1977-03-11)
우선권정보
LU-0074539 (1976-03-12)
발명자
/ 주소
Jourquin Lucien (Wetteren BEX) Du Prez Eddie (St-Maria-Oudenhove BEX)
출원인 / 주소
s.a. PRB (Brussels BEX 03)
인용정보
피인용 횟수 :
11인용 특허 :
7
초록▼
A hydrophile polyurethane foam prepared from a hydrophile polyol, a polyisocyanate in which NCO groups are not directly bonded to an aromatic ring, a surface active agent, a swelling agent and a catalyst comprising: (A) at least one compound selected from the group consisting of: (1) diazabicyclo-al
A hydrophile polyurethane foam prepared from a hydrophile polyol, a polyisocyanate in which NCO groups are not directly bonded to an aromatic ring, a surface active agent, a swelling agent and a catalyst comprising: (A) at least one compound selected from the group consisting of: (1) diazabicyclo-alkenes of formula: [Figure] (I) (2) substituted guanidines and salts of formula: [Figure] (II) (3) substituted biguanidines of formula: [Figure] (V) (4) substituted biguanidines of formula: [Figure] (VII) wherein the substituents can have different meanings, and (B) at least an alkali metal or alkaline earth metal salt of organic acids having a dissociation constant Ka-1.
대표청구항▼
A process for preparing a hydrophile polyurethane foam absorption material for medical and hygienic use comprising reaction of hydrophile polyol, a polyisocyanate wherein NCO groups are not directly bonded to an aromatic ring, a foam stabilizer, a swelling agent and an effective amount of a catalyst
A process for preparing a hydrophile polyurethane foam absorption material for medical and hygienic use comprising reaction of hydrophile polyol, a polyisocyanate wherein NCO groups are not directly bonded to an aromatic ring, a foam stabilizer, a swelling agent and an effective amount of a catalyst, wherein the catalyst consists essentially of: (A) at least one compound selected from the group consisting of (1)diazabicycloalkenes of the formula: [Figure] (I) wherein m varies from 3 to 7 and n from 2 to 4, and salts thereof with organic acids the dissociation constant of which is Ka≤10-2; (2) substituted guanidines and salts thereof of the formula: [Figure] (II) wherein R1, R2, R3 and R4 can independently represent a C1-C4 alkyl radical, a C1-C4 alkyl radical substituted by a C1-C4 alkoxy radical, or a heterocyclic C5-C7 radical comprising at most two atoms from the group consisting of sulfur and oxygen, R1 and R2 and/or R3 and R4 may form with the adjacent nitrogen a heterocyclic C5-C7 ring containing at most one member from the group consisting of sulfur or oxygen atom, X represents a member selected from the group consisting of hydrogen, phenyl, a phenyl group substituted by one or more C1-C4 alkoxy radicals, C1-C12 alkyl radicals or halogens, or represents a radical of the formula: [Figure] (III) wherein R5, R6 and R7 can independently represent hydrogen, a C1-C4 alkyl radical or a C1-C4 alkyl radical substituted by a member selected from the group consisting of phenyl, substituted phenyl, C1-C4 alkoxy, C6-C15 aryloxy, nitrile or carbalkoxy, or R7 may represent a member selected from the group consisting of a C5-C18 alkyl radical, a substituted phenyl radical or a C1-C4 alkoxy radical; or one or two of the groups R5-R6, R5-R7 or R6-R7 can form a cyclic ring of more than one member selected from the group consisting of nitrogen, sulfur or oxygen atom, and X may also represent a radical of the formula: [Figure] (IV) wherein z is an integer of from 2 to 12, R′and R″represent a member selected from the group consisting of hydrogen or a C1-C4 alkyl radical, R′′′and R′′′′represent a member selected from the group consisting of a C1-C4 alkyl radical or form with the adjacent nitrogen of a C5-C6 cycloalkyl radical; and addition salts of said guanidines; and addition salts of guanidines; (3) substituted biguanidines of the formula: [Figure] (V) wherein Q1 to Q6 can independently represent a member selected from the group consisting of C1-C4 alkyl or a C3-C4 cycloalkyl radical, and X′is hydrogen or a carbamoyl radical of the formula: [Figure] (VI) in which Z is a monovalent radical remaining after elimination of an isocyanate group from the above mentioned polyisocyanate, Q1 to Q6, X′and Z may optionally be substituted by a member selected from the group consisting of chlorine, bromine or a C1 or C2 alkoxy radical; and (4 ) substituted biguanidines of the formula: [Figure] (VII) wherein M1 to M8 can independently represent a C1-C4 alkyl radical, Y represents a group of the formula: [Figure] (VIII) wherein M9 and M10 represent a member selected from the group consisting of hydrogen or a C1-C4 alkyl radical, and a3 to 12 or represents a divalent cyclohexyl or a divalent isophorene radical; and (B) at least one alkali or alkaline earth metal salt of an organic acid having a dissociation constant Ka≤10-1.
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이 특허에 인용된 특허 (7)
Welte Rainer (Bensberg-Herkenrath DT) Grogler Gerhard (Leverkusen DT), Amidine-metal complexes and their use as catalysts for isocyanate polyaddition reactions.
Hudgin Donald Edward (Princeton Junction NJ) Blair Edgar Allan (Cranbury NJ), Hydrophilic or hydrogel carrier systems such as coatings, body implants and other articles.
Andrew, Gary Dale; Listemann, Mark Leo; Stehley, Patrick Gordon; Tobias, James Douglas; Miller, John William, Fast demold/extended cream time polyurethane formulations.
Andrew, Gary Dale; Listemann, Mark Leo; Stehley, Patrick Gordon; Tobias, James Douglas; Miller, John William, Fast demold/extended cream time polyurethane formulations.
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