US4085164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting compositions based on a bis-imide and a polyurethane
Assignee: Rhone Poulenc Industries SA
•
Filing: 1975-10-17
•
Granted: 1978-04-18
•
Expires: 1995-10-17
Abstract
Abstract A curable composition is provided which comprises A. an imide group-containing compound which is either A. a bis-imide of the formula ##STR1## which D represents a radical of the formula ##STR2## in which Y represents H, CH 3 or Cl, m is O or 1, and A represents a divalent organic radical containing 2 to 30 carbon atoms, or B. a mixture comprising a bis-imide of formula (I) and a mono-imide of the formula ##STR3## in which D is as defined above and R represents a hydrogen atom or a monovalent organic radical containing from 1 to 20 carbon atoms; and B. a polyurethane elastomer, in amounts such that the weight ratio ##EQU1## IS FROM 1/5 TO 4/1. Such compositions are useful for preparing moulded articles, adhesives, laminates and coatings.
Inventors
- 👤 Max Gruffaz
- 👤 Jean Louis Locatelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:26
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/833; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
163 words
A curable composition which consisting essentially of A. an imide-group-containing compound chosen from the group consisting of: a. a bis-imide of the formula: ##STR12## in which D represents a radical chosen from the group consisting of the radicals of the formula: ##STR13## in which Y represents H, CH 3 or Cl, m is 0 or 1, and A represents a divalent organic radical containing 2 to 30 carbon atoms, and b. a mixture comprising a bis-imide of formula (I) and a mono-imide of the formula: ##STR14## in which D is as defined above and R represents a hydrogen atom or a monovalent organic radical containing from 1 to 20 carbon atoms; and B. a polyurethane elastomer, in amounts such that the weight ratio ##EQU3## is from 1/5 to 4/1, and optionally C. an aromatic compound which possesses 2 to 4 benzene rings, is not sublimable at atmospheric pressure at up to 250° C. and has a boiling point of at least 250° C.
Claim 2
Dependent Claim
163 words
A curable composition which consisting essentially of A. an imide-group-containing compound chosen from the group consisting of: a. a bis-imide of the formula: ##STR12## in which D represents a radical chosen from the group consisting of the radicals of the formula: ##STR13## in which Y represents H, CH 3 or Cl, m is 0 or 1, and A represents a divalent organic radical containing 2 to 30 carbon atoms, and b. a mixture comprising a bis-imide of formula (I) and a mono-imide of the formula: ##STR14## in which D is as defined above and R represents a hydrogen atom or a monovalent organic radical containing from 1 to 20 carbon atoms; and B. a polyurethane elastomer, in amounts such that the weight ratio ##EQU3## is from 1/5 to 4/1, and optionally C. an aromatic compound which possesses 2 to 4 benzene rings, is not sublimable at atmospheric pressure at up to 250° C. and has a boiling point of at least 250° C.
Claim 3
Dependent Claim
17 words
A composition according to claim 1 in which the weight ratio ##EQU4## is from 1/4 to 2/1.
Claim 4
Dependent Claim
22 words
A composition according to claim 1, in which the polyurethane is formed from a diisocyanate, a hydroxylic polymer and a coupling agent.
Claim 5
Dependent Claim
19 words
A composition according to claim 3, in which the hydroxylic polymer has a molecular weight of 1,000 to 12,000.
Claim 6
Dependent Claim
16 words
A composition according to claim 3 in which the ratio NCO/OH is from 1.1 to 6.
Claim 7
Dependent Claim
22 words
A composition according to claim 3, in which the coupling agent is water, hydrazine, aminoacetic acid hydrazide, a diamine or a diol.
Claim 8
Dependent Claim
35 words
A composition according to claim 1, in which A represents a phenylene or xylylene radical or two phenylene radicals linked by a valency bond or via --O--, --SO 2 --, --S-- or --CH 2 --.
Claim 9
Dependent Claim
18 words
A composition according to claim 1 which also contains, as curing accelerator, a compound which generates free radicals.
Claim 10
Dependent Claim
18 words
A composition according to claim 8 in which the compound which generates free radicals is an organic peroxide.
Claim 11
Dependent Claim
18 words
A composition according to claim 8 in which the compound which generates free radicals is an azo compound.
Claim 12
Dependent Claim
51 words
A composition according to claim 1 in which the imide-group-containing compound is a mixture of a bis-imide of formula (I) and a monoimide of formula (II), the number of imide groups introduced by the mono-imide representing up to about 30% of the total number of imide groups introduced by the mixture.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |