US4525487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making polyester resin foam by spraying
Assignee: UNIROYAL Inc NEW YORK NY A CORP OF NJ
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Filing: 1983-08-11
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Granted: 1985-06-25
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Expires: 2003-08-11
Abstract
Abstract A spray method for making cured polyester resin foam is provided using a liquid unsaturated polyester resin, a sulfonyl hydrazide, an effective amount of a promoter, an effective amountof a catalyst and 0.005-3 parts quaternary ammonium salt.
Inventors
- 👤 James Ahnemiller
- 👤 Warren J. Peascoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:21
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/104; C08J9/105; C08J2367/00; C08J2367/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
159 words
A method for making cured and foamed polyester by spraying comprising (A) providing a mixture of (a) 100 parts by weight liquid unsaturated polyester resin, (b) 0.5-8 parts by weight substituted sulfonyl hydrazide blowing agent, (c) 1-4 parts by weight of an organic metal salt promoter for curing said resin, and 0.025-2 parts by weight quaternary ammonium salt; (B) providing a catalyst effective to causing curing and expanding the mixture of (A) and (C) bringing into contact the mixtures (A) and (B) and depositing the resulting blend onto a surface by spraying means; wherein the sulfonyl hydrazide blowing agent has the formula R(SO 2 NHNH 2 ) r where r equals 1, and R is C 1 -C 12 alkyl, C 5 -C 6 cycloalkyl, C 7 -C 10 aralkyl, phenyl, naphthyl or phenyl substituted with halogen, C 1 -C 12 alkyl or C 1 -C 4 alkoxy, whereby there is formed a foam free from cracking or splitting.
Claim 2
Independent Claim
159 words
A method for making cured and foamed polyester by spraying comprising (A) providing a mixture of (a) 100 parts by weight liquid unsaturated polyester resin, (b) 0.5-8 parts by weight substituted sulfonyl hydrazide blowing agent, (c) 1-4 parts by weight of an organic metal salt promoter for curing said resin, and 0.025-2 parts by weight quaternary ammonium salt; (B) providing a catalyst effective to causing curing and expanding the mixture of (A) and (C) bringing into contact the mixtures (A) and (B) and depositing the resulting blend onto a surface by spraying means; wherein the sulfonyl hydrazide blowing agent has the formula R(SO 2 NHNH 2 ) r where r equals 1, and R is C 1 -C 12 alkyl, C 5 -C 6 cycloalkyl, C 7 -C 10 aralkyl, phenyl, naphthyl or phenyl substituted with halogen, C 1 -C 12 alkyl or C 1 -C 4 alkoxy, whereby there is formed a foam free from cracking or splitting.
Claim 3
Dependent Claim
126 words
The method of claim 1 wherein said quaternary ammonium salt has the formula R 4 (NR 1 R 2 R 3 ) m + X m - , wherein m equals 1 or 2, and if m equals 1, R 1 , R 2 , R 3 and R 4 are the same or different and are C 1 -C 18 alkyl, C 3 -C 18 alkenyl, C 3 -C 18 alkoxyalkyl, C 3 -C 18 alkylcarbonylaminoalkyl or C 7 -C 9 aralkyl, or two of R 1 to R 4 in combination with the N atom from a C 4 -C 5 heterocyclic saturated or unsaturated non-aromatic moiety, and if n equals 2, R 4 is C 2 -C 10 alkylene; X is an anion.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein (A) also contains 0-250 parts of filler and 0-2 parts surface active agent.
Claim 5
Dependent Claim
18 words
The method of claim 1 wherein said catalyst is an organic hydroperoxide or a mixture of the same.
Claim 6
Dependent Claim
9 words
The product obtained by the method of claim 1.
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) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |