US4286004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic polyurethane foams and carpet backings made therefrom
Assignee: Stockhausen GmbH and Co KG
•
Filing: 1980-05-07
•
Granted: 1981-08-25
•
Expires: 2000-05-07
Abstract
Abstract The present invention relates to rendering antistatic polyurethane foams, particularly polyurethane foams which are used as textile coating such as carpet backings. The antistatics are terminally esterified or etherified polyalkylene oxide adducts of the general formula R--(CHR'--CH.sub.2 O)n--CHR'--CH.sub.2 R" in which R and R", which can be identical or different, denote a linear or branched alkoxy radical with 1 to 22 C atoms, an alkylaryloxy radical with 10 to 18 C atoms, an acyloxy radical with 1 to 18 C atoms or a halogen radical, R' denotes hydrogen or a methyl radical, and n denotes a whole number between 2 and 20. The antistatic finishing of the polyurethane foams is preferably effected by addition of the alkylene oxide adducts to the starting materials of the polyurethane foam. Preferably, the antistatic agents are dissolved in the diol component of the polyurethane. The so finished polyurethane foams have an antistatic content of 5 to 30 weight % relative to the polyurethane. The invention also extends to the antistatic finished polyurethane foams.
Inventors
- 👤 Kurt Dahmen
- 👤 Siegfried Pfabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:05
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J9/0014; C08J9/0023; C08J2375/00; C08J2375/04; C08J2471/00; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/249921; Y10T428/249953; Y10T428/249954
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
92 words
A process for rendering antistatic polyurethane foams comprising incorporating in the foam in amounts of about 5-30 weight % based on the polyurethane an antistatic agent of the formula R--(RHR'--CH.sub.2 O)n--CHR'--CH.sub.2 R" in which R and R" each indepentently is a linear or branched alkoxy radical with 1 to 22 carbon atoms, an alkaryloxy radical with 10 to 18 carbon atoms, an aliphatic acyloxy radical with 1 to 18 carbon atoms, or a halogen radical, R' is hydrogen or a methyl radical, and n is a whole number from 2 to 20.
Claim 2
Dependent Claim
92 words
A process for rendering antistatic polyurethane foams comprising incorporating in the foam in amounts of about 5-30 weight % based on the polyurethane an antistatic agent of the formula R--(RHR'--CH.sub.2 O)n--CHR'--CH.sub.2 R" in which R and R" each indepentently is a linear or branched alkoxy radical with 1 to 22 carbon atoms, an alkaryloxy radical with 10 to 18 carbon atoms, an aliphatic acyloxy radical with 1 to 18 carbon atoms, or a halogen radical, R' is hydrogen or a methyl radical, and n is a whole number from 2 to 20.
Claim 3
Dependent Claim
23 words
A process according to claim 1, wherein the antistatic agent is combined with a diol and diisocyanate component for producing the polyurethane foam.
Claim 4
Dependent Claim
24 words
A process according to claim 2, wherein the antistatic agent is added to the diol component before mixing the latter with the diisocyanate component.
Claim 5
Dependent Claim
16 words
A process according to claim 2, wherein the antistatic agent is dissolved in the diol component.
Claim 6
Dependent Claim
16 words
A process according to claim 1, wherein the antistatic agent is added to the diisocyanate component.
Claim 7
Dependent Claim
21 words
A process according to claim 1, wherein the diol component, the diisocyanate component and the antistatic component are simultaneously metered together.
Claim 8
Dependent Claim
40 words
A process according to claim 4, wherein the antistatic agent is employed in about 10 to 20 weight % based on the polyurethane, the foam being applied to a carpet back as formed to provide an antistatic foam backed carpet.
Claim 9
Dependent Claim
82 words
A polyurethane foam containing as an antistatic additive a terminally esterified or etherified polyalkylene oxide adduct of the general formula R--(CHR'--CH.sub.2 O)n--CHR'--CH.sub.2 R" in which R and R" each independently is a linear or branched alkoxy radical with 1 to 22 carbon atoms, an alkaryloxy radical with 10 to 18 carbon atoms, an acyloxy radical with 1 to 18 carbon atoms, or a halogen radical, R' is hydrogen or a methyl radical, and n is a whole number from 2 to 20.
Claim 10
Dependent Claim
82 words
A polyurethane foam containing as an antistatic additive a terminally esterified or etherified polyalkylene oxide adduct of the general formula R--(CHR'--CH.sub.2 O)n--CHR'--CH.sub.2 R" in which R and R" each independently is a linear or branched alkoxy radical with 1 to 22 carbon atoms, an alkaryloxy radical with 10 to 18 carbon atoms, an acyloxy radical with 1 to 18 carbon atoms, or a halogen radical, R' is hydrogen or a methyl radical, and n is a whole number from 2 to 20.
Claim 11
Dependent Claim
24 words
A polyurethane foam according to claim 8, wherein the antistatic additive is present in about 5 to 30 weight % based on the polyurethane.
Claim 12
Dependent Claim
24 words
A polyurethane foam according to claim 8, wherein the antistatic additive is present in about 10 to 20 weight % based on the polyurethane.
Claim 13
Dependent Claim
12 words
A polyurethane foam-backed carpet wherein the foam is that of claim 8.
Claim 14
Dependent Claim
12 words
A polyurethane foam-backed fabric wherein the foam is that of claim 8.
Claim 15
Dependent Claim
18 words
A fabric according to claim 12 wherein R and R" are alkoxy with 1 to 22 carbon atoms.
Claim 16
Dependent Claim
12 words
A fabric according to claim 12 wherein R and R" are acetoxy.
Claim 17
Dependent Claim
12 words
A fabric according to claim 12 wherein R and R" are halogen.
References Cited (Backward Citations)
US3746573A
Cited
US3701796A
Cited
US3955022A
Cited
US3897410A
Cited
US3961117A
Cited
DE2529939C3
Cited
US4132817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |