US4394460A
Expired / Lapsed
US
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Ethylene-chlorotrifluoroethylene copolymer foam
Assignee: Solvay Solexis Inc
•
Filing: 1981-12-04
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Granted: 1983-07-19
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Expires: 2001-12-04
Abstract
Abstract A foam composition comprising an ethylene-chlorotrifluoroethylene copolymer, a blowing agent and a nucleating agent. The nucleating agent is the carbonate or oxide of a metal cation from the group of metals consisting of magnesium, calcium, barium, zinc and lead. The invention also is a method of making the above foam copolymer composition.
Inventors
- 👤 Daniel C. Chung
- 👤 William A. Miller
- 👤 Eugene R. Baumgaertner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:09
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/0066; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/08; C08J2327/00; C08J2327/02; C08J2327/12; Y; Y10; Y10S; Y10S521/00; Y10S521/908; Y10S521/909; Y10S521/91
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
88 words
A composition comprising: a copolymer of ethylene and chlorotrifluoroethylene, the copolymer having between 40 and 60 mol percent of ethylene units and correspondingly between about 60 and about 40 mol percent of chlorotrifluoroethylene units; an effective amount of a blowing agent selected from the group consisting of hydrozodicarboxylates, diesters of azodiformic acid and carbazides; and at least one nucleating agent selected from the group consisting of talc, magnesium carbonate, calcium carbonate, barium carbonate, zinc carbonate, lead carbonate, magnesium oxide, calcium oxide, barium oxide, zinc oxide and lead oxide.
Claim 2
Dependent Claim
88 words
A composition comprising: a copolymer of ethylene and chlorotrifluoroethylene, the copolymer having between 40 and 60 mol percent of ethylene units and correspondingly between about 60 and about 40 mol percent of chlorotrifluoroethylene units; an effective amount of a blowing agent selected from the group consisting of hydrozodicarboxylates, diesters of azodiformic acid and carbazides; and at least one nucleating agent selected from the group consisting of talc, magnesium carbonate, calcium carbonate, barium carbonate, zinc carbonate, lead carbonate, magnesium oxide, calcium oxide, barium oxide, zinc oxide and lead oxide.
Claim 3
Dependent Claim
14 words
The composition as recited in claim 1 wherein the nucleating agent is a carbonate.
Claim 4
Dependent Claim
14 words
The composition as recited in claim 2 wherein the nucleating agent is calcium carbonate.
Claim 5
Dependent Claim
24 words
The composition as recited in claim 3 wherein there is up to 5 parts of calcium carbonate per hundred parts by weight of copolymer.
Claim 6
Dependent Claim
24 words
The composition as recited in claim 4 wherein there is 0.5 to 3 parts of calcium carbonate per hundred parts by weight of copolymer.
Claim 7
Dependent Claim
20 words
The composition as recited in claims 1 or 4 further comprising up to 5 parts of an inert nucleating agent.
Claim 8
Dependent Claim
14 words
The composition as recited in claim 6 wherein the inert nucleating agent is talc.
Claim 9
Dependent Claim
14 words
The composition as recited in claim 8 wherein the carbazide is p-toluene sulfonyl semicarbazide.
Claim 10
Dependent Claim
101 words
The composition as recited in claim 8 wherein the blowing agent is a compound having the formula ROOC--HN--NH--COOR' wherein at least one of R and R' is selected from the group consisting of secondary and tertiary alkyl groups having from 3 to 5 carbon atoms and the other of R and R' is selected from the group consisting of straight-chain and branched-chain alkyl groups having from 1 to 8 carbon atoms, cycloalkyl radicals having from 5 to 8 carbon atoms, aryl radicals having from 6 to 10 carbon atoms, and alkaryl and aralkyl radicals having from 7 to 10 carbon atoms.
Claim 11
Dependent Claim
14 words
The composition as recited in claim 9 wherein the blowing agent is diisopropyl hydrazodicarboxylate.
Claim 12
Dependent Claim
24 words
The composition as recited in claim 10 wherein there is up to 5 parts by weight of diisopropyl hydrazodicarboxylate per hundred parts of copolymer.
Claim 13
Dependent Claim
24 words
The composition as recited in claim 11 wherein there is between about 0.5 and 3 parts of diisopropyl hydrazodicarboxylate per hundred parts of copolymer.
Claim 14
Dependent Claim
25 words
The composition as recited in claim 1 further comprising up to about 3 parts by weight of high density polyethylene per hundred parts of copolymer.
Claim 15
Dependent Claim
23 words
The composition as recited in claim 1 wherein there is up to 30 parts of the nucleating agent per hundred parts of copolymer.
Claim 16
Dependent Claim
25 words
The composition as recited in claim 14 wherein there is from 0.1 to 5 parts of the nucleating agent per hundred parts of the copolymer.
Claim 17
Dependent Claim
23 words
The composition as recited in claim 15 wherein there is from 0.5 to 3 parts of the nucleating agent per hundred parts copolymer.
Claim 18
Dependent Claim
22 words
The composition as recited in claim 1 wherein there is up to 10 parts of blowing agent per hundred parts of copolymer.
Claim 19
Dependent Claim
23 words
The composition as recited in claim 17 wherein there is from 0.1 to 5 parts of blowing agent per hundred parts of copolymer.
Claim 20
Dependent Claim
23 words
The composition as recited in claim 18 wherein there is from 0.5 to 3 parts of blowing agent per hundred parts of copolymer.
Claim 21
Dependent Claim
46 words
A composition comprising: a copolymer of ethylene and chlorotrifluoroethylene, the copolymer having between 40 and 60 mol percent of ethylene units and correspondingly between about 60 and about 40 mol percent of chlorotrifluoroethylene units; an effective amount of a chemically decomposing blowing agent; and calcium carbonate.
Claim 22
Dependent Claim
46 words
A composition comprising: a copolymer of ethylene and chlorotrifluoroethylene, the copolymer having between 40 and 60 mol percent of ethylene units and correspondingly between about 60 and about 40 mol percent of chlorotrifluoroethylene units; an effective amount of a chemically decomposing blowing agent; and calcium carbonate.
Claim 23
Dependent Claim
19 words
The composition as recited in claim 20 wherein the calcium carbonate has a particle size up to 10 microns.
Claim 24
Dependent Claim
21 words
The composition as recited in claim 20 wherein the particle size of the calcium carbonate is from 0.01 to 3 microns.
Claim 25
Dependent Claim
25 words
The composition as recited in claim 22 wherein there is up to 5 parts by weight calcium carbonate per 100 parts by weight of copolymer.
Claim 26
Dependent Claim
20 words
The composition as recited in claims 20 or 23 further comprising up to 5 parts of an inert nucleating agent.
Claim 27
Dependent Claim
14 words
The composition as recited in claim 24 wherein the inert nucleating agent is talc.
Claim 28
Dependent Claim
27 words
The composition as recited in claim 20 wherein there is between about 0.5 and about 3 parts of calcium carbonate per hundred parts by weight of copolymer.
Claim 29
Dependent Claim
28 words
The composition as recited in claim 20 wherein the blowing agent is selected from the group consisting of the class of hydrazodicarboxylates, diesters of azodiformic acid and carbazides.
Claim 30
Dependent Claim
101 words
The composition as recited in claim 20 wherein the blowing agent is a compound having the formula ROOC--HN--NH--COOR' wherein at least one of R and R' is selected from the group consisting of secondary and tertiary alkyl groups having from 3 to 5 carbon atoms and the other of R and R' is selected from the group consisting of straight-chain and branched-chain alkyl groups having from 1 to 8 carbon atoms, cycloalkyl radicals having from 5 to 8 carbon atoms, aryl radicals having from 6 to 10 carbon atoms, and alkaryl and aralkyl radicals having from 7 to 10 carbon atoms.
Claim 31
Dependent Claim
14 words
The composition as recited in claim 28 wherein the blowing agent is diisopropyl hydrazodicarboxylate.
Claim 32
Dependent Claim
25 words
The composition as recited in claim 29 wherein there is from 0.1 to 5 parts by weight of diisopropyl hydrazodicarboxylate per hundred parts of copolymer.
Claim 33
Dependent Claim
24 words
The composition as recited in claim 30 wherein there is between about 0.5 and 3 parts of diisopropyl hydrazodicarboxylate per hundred parts of copolymer.
Claim 34
Dependent Claim
25 words
The composition as recited in claim 20 further comprising up to about 3 parts by weight of high density polyethylene per hundred parts of copolymer.
Claim 35
Dependent Claim
28 words
The composition as recited in claim 20 wherein the blowing agent is a metal carbonate selected from the group consisting of magnesium carbonate, zinc carbonate and lead carbonate.
Claim 36
Dependent Claim
14 words
The composition as recited in claim 33 wherein the blowing agent is magnesium carbonate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |