Patent US5037880A successfully refreshed from Google Patents.
US5037880A
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Highly dilatant copolymer dispersion having high continuous-load stability
Assignee: BASF SE
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Filing: 1990-05-09
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Granted: 1991-08-06
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Expires: 2010-05-09
Abstract
Abstract A highly dilatant copolymer dispersion containing, as essential components, an emulsion copolymer prepared from 1 to 10% by weight, based on the sum of the monomers employed, of α,β-monoolefinically unsaturated carboxylic acids and other olefinically unsaturated monomers, in which the emulsion copolymer is prepared in the presence of from 5 to 30% by weight, based on the sum of the monomers employed, of allyl carboxylate or alkylallyl carboxylate containing 2 or more copolymerizable olefinic double bonds, or a mixture thereof, the alkyl radical containing 1 to 4 C atoms, and the preparation thereof.
Inventors
- 👤 Franz Schmidt
- 👤 Richard Bung
- 👤 Martin Laun
- 👤 Gerd Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:22
CPC Classifications
C; C08; C08F; C08F212/00; C08F218/00; C08F218/14; C08F218/16; C08F220/00; C08F220/02; C08F220/04; C08F246/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
A highly dilatant copolymer dispersion containing, as essential component, an emulsion copolymer prepared from 1 to 10% by weight, based on the sum of the monomers employed, of α,β-monoolefinically unsaturated carboxylic acids and other olefinically unsaturated monomers, wherein the emulsion copolymer is prepared in the presence of from 5 to 30% by weight, based on the sum of the monomers employed, of an allyl carboxylate or alkylallyl carboxylate containing 2 or more copolymerizable olefinic double bonds, or a mixture thereof, the alkyl radical containing 1 to 4 C atoms.
Claim 2
Dependent Claim
89 words
A highly dilatant copolymer dispersion containing, as essential component, an emulsion copolymer prepared from 1 to 10% by weight, based on the sum of the monomers employed, of α,β-monoolefinically unsaturated carboxylic acids and other olefinically unsaturated monomers, wherein the emulsion copolymer is prepared in the presence of from 5 to 30% by weight, based on the sum of the monomers employed, of an allyl carboxylate or alkylallyl carboxylate containing 2 or more copolymerizable olefinic double bonds, or a mixture thereof, the alkyl radical containing 1 to 4 C atoms.
Claim 3
Dependent Claim
99 words
A highly dilatant copolymer dispersion as claimed in claim 1, whose emulsion copolymer has been prepared from 1 to 10% by weight of α,β-monoolefinically unsaturated carboxylic acids, 40 to 94% by weight of vinyl aromatic monomers, methyl methacrylate or a mixture thereof, 6 to 30% by weight of an allyl carboxylate or alkylallyl carboxylate, containing 2 or more copolymerizable olefinic double bonds, or a mixture thereof, the alkyl radical containing 1 to 4 C atoms and 0 to 40% by weight of further copolymerizable monomers, the % by weight data being based on the sum of the monomers employed.
Claim 4
Dependent Claim
51 words
A highly dilatant copolymer dispersion as claimed in claim 1, in which the allyl carboxylate or alkylallyl carboxylate is selected from the group consisting of allyl acrylate, alkylallyl acrylate, allylalkyl acrylate and alkylallyl alkylacrylate, or a mixture thereof, the alkyl groups, independently of one another, having up to 4 C atoms.
Claim 5
Dependent Claim
50 words
A highly dilatant copolymer dispersion as claimed in claim 1, containing from 0.05 to 1 part by weight, based on 100 parts by weight of the solid of the emulsion copolymer, of organic peroxides whose decomposition temperatures are greater than 130° C. for a half life period of 1 hour.
Claim 6
Dependent Claim
50 words
A highly dilatant copolymer dispersion as claimed in claim 1, containing from 0.05 to 1 part by weight, based on 100 parts by weight of the solid of the emulsion copolymer, of organic hydroperoxides whose decomposition temperatures are greater than 130° C. for a half life period of 1 hour.
Claim 7
Dependent Claim
46 words
A highly dilatant copolymer dispersion as claimed in claim 1, containing from 0.1 to 30 parts by weight, based on 100 parts by weight of the solid of the emulsion copolymer, of oxides, hydroxides, carbonates or watersoluble salts of monovalent or divalent metals, or mixtures thereof.
Claim 8
Dependent Claim
90 words
A process for the preparation of a highly dilatant copolymer dispersion as claimed in claim 1, which comprises preparing the emulsion copolymer in aqueous emulsion from 0.1 to 10% by weight, based on the sum of the monomers employed, of α,β-monoolefinically unsaturated carboxylic acids, 6 to 30% by weight, based on the sum of the monomers employed, of an allyl carboxylate or alkylallyl carboxylate containing 2 or more copolymerizable olefinic double bonds, or a mixture thereof, the alkyl radical containing 1 to 4 C atoms, and other olefinically unsaturated monomers.
Claim 9
Dependent Claim
44 words
A highly dilatant copolymer dispersion as claimed in claim 1, in which said emulsion copolymer is prepared in the presence of from 6 to 20% by weight, based on the sum of the monomers employed, of said allyl carboxylate or said alkyl- allyl carboxylate.
Claim 10
Dependent Claim
43 words
A highly dilatant copolymer dispersion as claimed in claim 1, in which said emulsion copolymer is prepared in the presence of from 10 to 20% by weight, based on the sum of the monomers employed, of said allyl carboxylate or said alkyl-allyl carboxylate.
Claim 11
Dependent Claim
34 words
A process as claimed in claim 7, wherein said allyl carboxylate or said alkylallyl carboxylate is employed in an amount of 6 to 20% by weight, based on the sum of the monomers employed.
Claim 12
Dependent Claim
34 words
A process as claimed in claim 7, wherein said allyl carboxylate or said alkylallyl carboxylate is employed in an amount of 10 to 20% by weight, based on the sum of the monomers employed.
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) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |