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US4248930A Expired / Lapsed US ⏱️ 0.0 years remaining

The production of polyurethane resins and laminates

Assignee: Bayer AG
•
Filing: 1979-12-26
•
Granted: 1981-02-03
•
Expires: 1999-12-26
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Abstract

Abstract A process is disclosed for producing polyurethane resins using novel catalysts selected from the group consisting of a process for the production of cellular or non-cellular polyurethane resins comprising reacting: (a) polyisocyanates; with (b) compounds having at least 2 isocyanate reactive hydrogen atoms; in the presence of (c) tertiary amines as catalysts; optionally with the addition of (d) blowing agents, stabilizers and other known additives; characterized in that the substances used as component (c) comprise compounds selected from the group consisting of ##STR1## and mixtures thereof in which formulae: the symbols R may be the same or different and represent straight or branched-chain alkyl groups having from 1 to 4 carbon atoms; the symbols n may be the same or different and represent 2 or 3; the symbols m may be the same or different and represent 2 or 3; and k represents an integer of from 1 to 5. The process may also be carried out in the presence of other tertiary amine catalysts, particularly compounds containing one tertiary nitrogen atom and at least one amide group. The novel catalysts of the invention function as age-resistors and light-protective agents.

Inventors

  • 👤 Peter Haas
  • 👤 Johannes Blahak
  • 👤 Werner Mormann
  • 👤 Manfred Kapps

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 18:41
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1808; C08G18/1825; C08G18/28; C08G18/2805; C08G18/285; C08G18/2865; C08G18/30; C08G18/32; C08G18/3225; C08G18/3228; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/3158

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 131 words
A process for the production of cellular or non-cellular polyurethane resins comprising reacting: (a) polyisocyanates; with (b) compounds having at least 2 isocyanate reactive hydrogen atoms; in the presence of (c) tertiary amines as catalysts; optionally with the addition of (d) blowing agents, stabilizers and other known additives; wherein the substances used as component (c) comprise compounds selected from the group consisting of ##STR5## and mixtures thereof in which formulae: the symbols R may be the same or different and represent straight or branched-chain alkyl groups having from 1 to 4 carbon atoms, the symbols n may be the same or different and represent 2 or 3; the symbols m may be the same or different and represent 2 or 3; and k represents an integer of from 1 to 5.
Claim 2
Dependent Claim 131 words
A process for the production of cellular or non-cellular polyurethane resins comprising reacting: (a) polyisocyanates; with (b) compounds having at least 2 isocyanate reactive hydrogen atoms; in the presence of (c) tertiary amines as catalysts; optionally with the addition of (d) blowing agents, stabilizers and other known additives; wherein the substances used as component (c) comprise compounds selected from the group consisting of ##STR5## and mixtures thereof in which formulae: the symbols R may be the same or different and represent straight or branched-chain alkyl groups having from 1 to 4 carbon atoms, the symbols n may be the same or different and represent 2 or 3; the symbols m may be the same or different and represent 2 or 3; and k represents an integer of from 1 to 5.
Claim 3
Dependent Claim 10 words
The process of claim 1 wherein catalyst (c) is ##STR6##
Claim 4
Dependent Claim 19 words
The process of claim 1 wherein component (c) is used as a mixture with other tertiary amines as co-catalysts.
Claim 5
Dependent Claim 22 words
The process of claim 2 wherein from 3 to 97 mol%, based on the whole catalyst mixture, of said co-catalysts is used.
Claim 6
Dependent Claim 16 words
The process according to claim 3, wherein from 10 to 90 mol% of co-catalysts is used.
Claim 7
Dependent Claim 15 words
The process of claim 4, wherein from 30 to 70 mol% of co-catalysts is used.
Claim 8
Dependent Claim 21 words
The process of claim 2 wherein said co-catalysts have at least one tertiary nitrogen atom and at least one amide group.
Claim 9
Dependent Claim 54 words
The process of claim 1, wherein from 30 to 70 mol% of co-catalysts based on the whole catalyst mixture is used which are formylation products of the compounds corresponding to the general formulae (1) to (4) in claim 1 and/or the following compounds: ##STR7## wherein R and n are as defined in claim 1.
Claim 10
Dependent Claim 20 words
The process of claim 1 or 2 wherein R represents a methyl group, m represents 2 and n represents 3.
Claim 11
Dependent Claim 18 words
A laminate comprising a synthetic resin foil covering a polyurethane resin produced by the process of claim 1.

References Cited (Backward Citations)

US3168497A Cited
GB1338275A Cited
FR2085965B1 Cited
US4007140A Cited
US4022720A Cited
US4143003A Cited
US4080343A Cited
US4049591A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-02-03 1984-08-04 1985-02-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-02-03 1988-08-04 1989-02-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-02-03 1992-08-04 1993-02-03 $7700.00 Window Closed / Lapsed

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