Patent US4073766A successfully refreshed from Google Patents.
US4073766A
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US
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Organic borate coupling agents
Assignee: Dart Industries Inc
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Filing: 1976-12-15
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Granted: 1978-02-14
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Expires: 1996-12-15
Abstract
Abstract Novel coupling agents for use in filled polymers to improve physical properties e.g. melt flow and impact strength, which agents are organic borates containing at least one functional group reactive with the filler and at least one functional group compatible with the polymer.
Inventors
- 👤 Marvin M. Fein
- 👤 Birendra K. Patnaik
- 👤 Frank K. Y. Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:49
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04; C07; C07F; C07F5/00; C07F5/02; C07F5/04; C08K5/00; C08K5/55; C09; C09C; C09C3/00; C09C3/08; C01; C01P; C01P2004/00; C01P2004/10; C01P2004/80; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
74 words
A method of improving the properties of a filler for polymers, which comprises coating the filler with from about 0.5 to about 5 percent based on the weight of the filler of a coupling agent having the general formula ##STR2## wherein R 1 is an alkyl group having from about 1 - 6 carbon atoms, and R 2 and X each is a long chained hydrocarbon group containing from 8 to 22 carbon atoms.
Claim 2
Independent Claim
74 words
A method of improving the properties of a filler for polymers, which comprises coating the filler with from about 0.5 to about 5 percent based on the weight of the filler of a coupling agent having the general formula ##STR2## wherein R 1 is an alkyl group having from about 1 - 6 carbon atoms, and R 2 and X each is a long chained hydrocarbon group containing from 8 to 22 carbon atoms.
Claim 3
Dependent Claim
13 words
The method of claim 1 wherein R 1 is a branched alkyl group.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein R 1 is a secondary alkyl group.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein R 2 is an alkyl group.
Claim 6
Dependent Claim
18 words
The method of claim 4 wherein X is an alkyl group containing from 12 to 18 carbon atoms.
Claim 7
Dependent Claim
15 words
The method of claim 2 wherein R 1 contains from 3 to 4 carbon atoms.
Claim 8
Dependent Claim
27 words
The method of claim 6 wherein R 1 is isopropyl and R 2 and X each is an alkyl group having from 12 to 18 carbon atoms.
Claim 9
Dependent Claim
30 words
The method of claim 1 wherein the filler is precoated with from about 1 to about 3 weight percent of the coupling agent based on the weight of the filler.
Claim 10
Dependent Claim
12 words
The method of claim 1 wherein the coupling agent is dicetyl isopropylborate.
Claim 11
Dependent Claim
12 words
The method of claim 1 wherein the coupling agent is dilauryl isopropylborate.
Claim 12
Dependent Claim
12 words
The method of claim 1 wherein the coupling agent is distearyl isopropylborate.
Claim 13
Dependent Claim
11 words
The method of claim 1 wherein the filler is calcium carbonate.
Claim 14
Dependent Claim
11 words
A filler for polymers prepared by the method of claim 1.
Claim 15
Dependent Claim
10 words
A filled polymer composition containing the filler of claim 13.
Claim 16
Dependent Claim
14 words
The filled polymer composition of claim 14 wherein the polymer is a thermoplastic resin.
Claim 17
Dependent Claim
14 words
The filled polymer composition of claim 15 wherein the polymer is an olefin polymer.
Claim 18
Dependent Claim
14 words
The filled polymer composition of claim 16 wherein the polymer is an ethylene-propylene copolymer.
Claim 19
Dependent Claim
14 words
The filled polymer composition of claim 16 wherein the polymer is a propylene homopolymer.
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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |