CA1206294A — Polyurethane ureas having sulfur-containing aroma…

Claim 1

Independent Claim 89 words

Polyurethane ureas containing aromatic sulfur-containing urea groups, characterized in that the urea groups have the structural formula: wherein X represents S-, ; R1 and R2, which may be the same or different, represent hydrogen, an alkyl-, or an alkoxy-group containing from 1 to 4 carbon atoms; R3 represents hydrogen, a halogen, an alkoxy-group containing from 1 to 4 carbon atoms, -COR4, -COOR4, , -SO2-R4 or SO2-NR4R5, in which R4 and R5 independently of one another represent a linear or branched aliphatic radical containing from 1 to 4 carbon atoms.

Claim 2

Dependent Claim 89 words

Polyurethane ureas containing aromatic sulfur-containing urea groups, characterized in that the urea groups have the structural formula: wherein X represents S-, ; R1 and R2, which may be the same or different, represent hydrogen, an alkyl-, or an alkoxy-group containing from 1 to 4 carbon atoms; R3 represents hydrogen, a halogen, an alkoxy-group containing from 1 to 4 carbon atoms, -COR4, -COOR4, , -SO2-R4 or SO2-NR4R5, in which R4 and R5 independently of one another represent a linear or branched aliphatic radical containing from 1 to 4 carbon atoms.

Claim 3

Dependent Claim 32 words

Polyurethane ureas as claimed in Claim 1, further characterized that said urea groups have the structural formula: (a) and/or (b) wherein X, R1, R2, and R3 are as defined in Claim 1.

Claim 4

Dependent Claim 43 words

Polyurethane ureas as claimed in Claim 2 further characterized in that R1 and R2 which may be the same or different represent hydrogen or an alkyl group containing from 1 to 4 carbon atoms; and R3 represents hydrogen, chlorine, -OCH3, -OC2H5 or -SO2CH3.

Claim 5

Dependent Claim 17 words

Polyurethane ureas as claimed in Claim 1, further characterized in that R1, R2 and R3 represent hydrogen.

Claim 6

Dependent Claim 132 words

A process for the production of polyurethane ureas comprising reacting, (A) at least one polyisocyanate; (B) at least one compound containing at least 2 iso-cyanate-reactive hydrogen atoms having a molecular weight of from 400 to 10,000; (C) at least one sulfur-containing aromatic diamine as a chain-extending agent, characterized in that said sulfur-containing aromatic diamine corresponds to the general formula: wherein X represents -S-, ; R1 and R2, which may be the same or different represent hydrogen, an alkyl-, or an alkoxy group containing from 1 to 4 carbon atoms; R3 represents hydrogen, a halogen, an alkoxy-group containing from 1 to 4 carbon atoms, -COR4, -COOR4, , -SO2-R4 or SO2-NR4R5, in which R4 and R5 independently of one another represent a linear or branched aliphatic radical contain-ing from 1 to 4 carbon atoms.

Claim 7

Dependent Claim 132 words

A process for the production of polyurethane ureas comprising reacting, (A) at least one polyisocyanate; (B) at least one compound containing at least 2 iso-cyanate-reactive hydrogen atoms having a molecular weight of from 400 to 10,000; (C) at least one sulfur-containing aromatic diamine as a chain-extending agent, characterized in that said sulfur-containing aromatic diamine corresponds to the general formula: wherein X represents -S-, ; R1 and R2, which may be the same or different represent hydrogen, an alkyl-, or an alkoxy group containing from 1 to 4 carbon atoms; R3 represents hydrogen, a halogen, an alkoxy-group containing from 1 to 4 carbon atoms, -COR4, -COOR4, , -SO2-R4 or SO2-NR4R5, in which R4 and R5 independently of one another represent a linear or branched aliphatic radical contain-ing from 1 to 4 carbon atoms.

Claim 8

Dependent Claim 53 words

The process as claimed in Claim 5, character-ized in that said sulfur-containing aromatic diamine corresponds to the general formula: or wherein R1 and R2 which may be the same or different represent hydrogen or an alkyl group containing from 1 to 4 carbon atoms; and R3 represents hydrogen, chlorine, -OCH3, -OC2H5 or -SO2CH3.

Claim 9

Dependent Claim 24 words

The process as claimed in Claim 5 in which said sulfur-containing aromatic diamine is further charac-terized in that R1, R2, and R3 represent hydrogen.

Claim 10

Dependent Claim 37 words

The process as claimed in Claim 5, 6, or 7 further characterized in that said sulfur-containing aromatic diamine is used in a quantity of at least 30 mol percent, based on the total quantity of chain-extending agents.

Claim 11

Dependent Claim 37 words

The process as claimed in Claim 5, 6, or 7 further characterized in that said sulfur-containing aromatic diamine is used in a quantity of more than 50 mol percent, based on the total quantity of chain-extending agents.

Claim 12

Dependent Claim 31 words

The process as claimed in Claim 5, wherein there is additionally reacted (D), other isocyanate-reactive compounds, said compounds having a molecular weight of from 32 up to but not including 400.

Claim 13

Dependent Claim 29 words

The process as claimed in Claim 5 or 10, wherein said reacting is carried out in the presence of at least one of blowing agents, activators and other additives.

Claim 14

Dependent Claim 18 words

The process as claimed in claim 5, 6 or 7, wherein said reacting is carried out in stages.

Polyurethane ureas having sulfur-containing aromatic urea groups and a process for their production

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