US5055134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal mould release compositions
Assignee: Imperial Chemical Industries Ltd
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Filing: 1989-03-30
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Granted: 1991-10-08
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Expires: 2009-03-30
Abstract
Abstract An internal mould release composition, suitable for use in the production of moulded articles by the RIM process, comprising: a) a metal salt of an organic acid, said metal salt having mould release properties, and b) a compatibilizing amount of an amidine or imidate compound.
Inventors
- 👤 Edward F. Cassidy
- 👤 Herbert R. Gillis
- 👤 Malcolm Hannaby
- 👤 Alain Parfondry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/29; B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; C08K5/0008; C08K5/04; C08K5/09; C08K5/098; C08K5/34; C08K5/3442; C08K5/3445; C08K5/36; C08K5/37; C08K5/372; C08K5/3725
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
An internal mould release composition comprising: (a) a metal salt of an organic acid, said metal salt having mould release properties, and (b) a compatibilising amount of an amidine or imidate compound or mixture thereof of formula (1) ##STR5## wherein X represents O, S, or NR 1 and wherein each of R 1 to R 4 , independently or together represents H or an organic radical, selected from: a) alkyl radicals cyclo alkyl radicals c) aralkyl radicals and aryl radicals and d) polymeric chains containing hereto atoms.
Claim 2
Dependent Claim
87 words
An internal mould release composition comprising: (a) a metal salt of an organic acid, said metal salt having mould release properties, and (b) a compatibilising amount of an amidine or imidate compound or mixture thereof of formula (1) ##STR5## wherein X represents O, S, or NR 1 and wherein each of R 1 to R 4 , independently or together represents H or an organic radical, selected from: a) alkyl radicals cyclo alkyl radicals c) aralkyl radicals and aryl radicals and d) polymeric chains containing hereto atoms.
Claim 3
Dependent Claim
41 words
A composition according to claim 1 wherein a) the alkyl radical contains from 1 to 10 atoms b) the cycloalkyl radical contains from 5 to 7 atoms c) the aralkyl radical and aryl radical contains from 6 to 18 C atoms.
Claim 4
Dependent Claim
33 words
A composition according to claim 1 wherein the compound of formula (1) has at least two of the three substituents attached to the imino-unit joined together to form at least one non-aromatic ring.
Claim 5
Dependent Claim
19 words
A composition according to claim 1 wherein the compound of formula (1) has a molecular weight not exceeding 1500.
Claim 6
Dependent Claim
13 words
A composition according to claim 1 wherein the metal salt is Zinc Stearate.
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) | 1994-10-07 | 1995-04-08 | 1995-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-07 | 1999-04-08 | 1999-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-07 | 2003-04-08 | 2003-10-08 | $7700.00 | Window Closed / Lapsed |