ES2075793A1 - Process for manufacturing polyurethane prepolymers for use as adhesive, and especially as a binder for natural cork - Google Patents
Process for manufacturing polyurethane prepolymers for use as adhesive, and especially as a binder for natural corkInfo
- Publication number
- ES2075793A1 ES2075793A1 ES09300900A ES9300900A ES2075793A1 ES 2075793 A1 ES2075793 A1 ES 2075793A1 ES 09300900 A ES09300900 A ES 09300900A ES 9300900 A ES9300900 A ES 9300900A ES 2075793 A1 ES2075793 A1 ES 2075793A1
- Authority
- ES
- Spain
- Prior art keywords
- reactor
- binder
- adhesive
- polyurethane prepolymers
- natural cork
- Prior art date
- 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.)
- Granted
Links
Landscapes
- Polyurethanes Or Polyureas (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Process for manufacturing polyurethane prepolymers for use as adhesive, and especially as a binder for natural cork. Includes: the placing of a polyol of a multifunctional polyether or polyester with terminal hydroxyl groups in a reactor with an organic or Lewis acid heating the reactor to a temperature of 40 to 60 degree C, adding a toluene diisocyanate to the reactor and carrying out the reaction between 70 and 90 degree C for 4 to 6 hours until a percentage of NCO groups of between 3.6 and 6% is obtained, and adding a diphenylmethane diisocyanate to the reactor before the reaction mixture is cooled, a moisture prevention additive is added all so that the prepolymer obtained has a percentage of toxic diisocyanate below 1% and is therefore regarded as being harmful but not toxic.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9300900A ES2075793B1 (en) | 1993-04-28 | 1993-04-28 | PROCESS FOR THE MANUFACTURE OF POLYURETHANE PREPOLYMERS TO USE AS AN ADHESIVE, AND ESPECIALLY BINDING OF NATURAL CORK. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9300900A ES2075793B1 (en) | 1993-04-28 | 1993-04-28 | PROCESS FOR THE MANUFACTURE OF POLYURETHANE PREPOLYMERS TO USE AS AN ADHESIVE, AND ESPECIALLY BINDING OF NATURAL CORK. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2075793A1 true ES2075793A1 (en) | 1995-10-01 |
ES2075793B1 ES2075793B1 (en) | 1996-04-01 |
Family
ID=8281629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9300900A Expired - Fee Related ES2075793B1 (en) | 1993-04-28 | 1993-04-28 | PROCESS FOR THE MANUFACTURE OF POLYURETHANE PREPOLYMERS TO USE AS AN ADHESIVE, AND ESPECIALLY BINDING OF NATURAL CORK. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2075793B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11142488B2 (en) | 2011-02-09 | 2021-10-12 | Everris International B.V. | Methods and systems for coating granular substrates |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4487910A (en) * | 1983-02-25 | 1984-12-11 | Henkel Kommanditgesellschaft Auf Aktien | Process for polyurethane prepolymers containing terminal isocyanate groups and having a reduced residual monomer content |
EP0373671A2 (en) * | 1988-12-15 | 1990-06-20 | Sanncor Industries, Inc. | Waterborne polyurethane dispersions |
EP0511586A1 (en) * | 1991-04-30 | 1992-11-04 | Tremco Ltd. | Moisture curable polyurethane composition |
-
1993
- 1993-04-28 ES ES9300900A patent/ES2075793B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4487910A (en) * | 1983-02-25 | 1984-12-11 | Henkel Kommanditgesellschaft Auf Aktien | Process for polyurethane prepolymers containing terminal isocyanate groups and having a reduced residual monomer content |
EP0373671A2 (en) * | 1988-12-15 | 1990-06-20 | Sanncor Industries, Inc. | Waterborne polyurethane dispersions |
EP0511586A1 (en) * | 1991-04-30 | 1992-11-04 | Tremco Ltd. | Moisture curable polyurethane composition |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11142488B2 (en) | 2011-02-09 | 2021-10-12 | Everris International B.V. | Methods and systems for coating granular substrates |
Also Published As
Publication number | Publication date |
---|---|
ES2075793B1 (en) | 1996-04-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC2A | Transfer of patent |
Owner name: MERQUINSA MERCADOS QUIMICOS,S.L. |
|
PC2A | Transfer of patent | ||
FD1A | Patent lapsed |
Effective date: 20060429 |