Patent US3714101A successfully refreshed from Google Patents.
US3714101A
Expired / Lapsed
US
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Heat sensitive latices containing silicone polyether
Assignee: Goodrich Corp
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Filing: 1970-10-21
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Granted: 1973-01-30
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Expires: 1990-10-21
Abstract
Abstract Synthetic latices are made heat-sensitive by the presence in the latex of a silicone polyether. The use of an organosulfonate in combination with a silicone polyether as a heat-sensitizing system for synthetic latices produces a heat-sensitive latex that is relatively stable at room temperature but that may be converted to a gel at a moderately low temperature and the silicone polyether may be used in significantly reduced amounts to impart heat-sensitivity to the latex as compared to the amounts of silicone polyether required as the heat-sensitizing additive without this additive. Organic acids when used in conjunction with the silicone polyether-sulfonate heatsensitizing system, further enhance gelation of synthetic latices in that gelation occurs within a shorter time when the latex is heated to the gelation temperature, gelation of the latex occurs at a lower gelation temperature and gelation of latices with relatively low solids content can be accomplished.
Inventors
- 👤 D Knechtges
- 👤 G Antlfinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:55
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/14; C08C1/145; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/36; C08K5/41; C08K5/42; C08L; C08L33/00; C08L33/02; C08L57/00; C08L83/00; C08L83/10; C08L83/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
284 words
A heat sensitive latex of a film-forming polymeric synthetic latex consisting essentially of vinylidene monomers having at least one terminal group, containing (1) a water soluble organosulfonate emulsifier having at least one aromatic ring and at least one -SO3 group attached thereto of the formula wherein R is alkyl or alkenyl containing eight to 20 carbon atoms, or aryl, Ar is phenyl or naphthyl and M is an alkali metal, present in said latex in amounts of at least about five parts to less than about 20 parts by weight per 100 parts by weight of film-forming polymer, and (2) about 0.05 to less than one weight part per 100 weight parts of film-forming polymer of a liquid silicone polyether of the formula (R''(OCnH2n)xOOCNH-R'''' -CH2CH2)a(R)bSiO4-a-b/2 wherein R is an organic radical attached to silicon through a silicon-carbon linkage, R'' is a member selected from the class consisting of lower alkyl radicals containing from one to seven carbon atoms, and aryl radicals; R'''' is a divalent hydrocarbon radical containing no more than about seven carbon atoms; a has a value of from 0.50 to 1.00, inclusive; b has a value of from 1.12 to 1.90, inclusive; the sum of a plus b is equal to from 2.02 to 2.40, inclusive; n has a value of from 2 to 4, inclusive; and x has a value of at least 5 to 100; at least one to 5 weight parts per 100 weighT parts of film forming polymer of an organic acid selected from the group consisting of aliphatic carboxylic acids containing two to 12 carbon atoms and polyacrylic acid, said organic acids having a water solubility of at least one gram in 100 grams of water.
Claim 2
Dependent Claim
284 words
A heat sensitive latex of a film-forming polymeric synthetic latex consisting essentially of vinylidene monomers having at least one terminal group, containing (1) a water soluble organosulfonate emulsifier having at least one aromatic ring and at least one -SO3 group attached thereto of the formula wherein R is alkyl or alkenyl containing eight to 20 carbon atoms, or aryl, Ar is phenyl or naphthyl and M is an alkali metal, present in said latex in amounts of at least about five parts to less than about 20 parts by weight per 100 parts by weight of film-forming polymer, and (2) about 0.05 to less than one weight part per 100 weight parts of film-forming polymer of a liquid silicone polyether of the formula (R''(OCnH2n)xOOCNH-R'''' -CH2CH2)a(R)bSiO4-a-b/2 wherein R is an organic radical attached to silicon through a silicon-carbon linkage, R'' is a member selected from the class consisting of lower alkyl radicals containing from one to seven carbon atoms, and aryl radicals; R'''' is a divalent hydrocarbon radical containing no more than about seven carbon atoms; a has a value of from 0.50 to 1.00, inclusive; b has a value of from 1.12 to 1.90, inclusive; the sum of a plus b is equal to from 2.02 to 2.40, inclusive; n has a value of from 2 to 4, inclusive; and x has a value of at least 5 to 100; at least one to 5 weight parts per 100 weighT parts of film forming polymer of an organic acid selected from the group consisting of aliphatic carboxylic acids containing two to 12 carbon atoms and polyacrylic acid, said organic acids having a water solubility of at least one gram in 100 grams of water.
Claim 3
Dependent Claim
37 words
The heat sensitive latex of claim 1 wherein in the organosulfonate, R is a radical of the structure where R'' is hydrogen, alkyl having from one to 16 carbon atoms, or an aryl radical having the structure
Claim 4
Dependent Claim
21 words
The heat sensitive latex of claim 2 wherein the latex contains a polymer containing a more than 50 percent butadiene-1, 3.
Claim 5
Dependent Claim
35 words
The heat sensitive latex of claim 2 wherein the polymer of the synthetic latex is a polymer containing a major proportion of an alkyl acrylate wherein the alkyl group contains two to eight carbon atoms.
Claim 6
Dependent Claim
18 words
The heat sensitive latex of claim 2 wherein the organo-sulfonate emulsifier is selected from the group consisting of
Claim 7
Dependent Claim
34 words
The heat sensitive latex of claim 5 wherein the polymer contains at least about 50 percent butadiene-1,3 and greater than 1 percent of at least one other vinylidene monomer containing a single terminal grouping.
Claim 8
Dependent Claim
36 words
The heat sensitive latex of claim 5 wherein the alkyl acrylate polymer contains greater than 50 percent alkyl acrylate and at least 1 percent of at least one other vinylidene monomer containing a single terminal group.
Claim 9
Dependent Claim
53 words
A heat sensitive latex of claim 2 wherein the polymer is a copolymer of butadiene-1,3 containing greater than 50 percent butadiene-1,3 and at least 1 percent of an acrylic acid of N-alkylol acrylamide and the organo-sulfonate has the formula and the organic acid is oxalic acid, tartaric acid, polyacrylic acid or ammonium polyacrylate.
Claim 10
Dependent Claim
56 words
A heat sensitive latex of claim 2 wherein the polymer is a copolymer of an alkyl acrylate containing greater than 50 percent alkyl acrylate and at least 1 percent of an acrylic acid or N-alkylol acrylamide and the organo-sulfonate has the formula and the organic acid is oxalic acid, tartaric acid, polyacrylic acid or ammonium polyacrylate.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |