US3978018A
Expired / Lapsed
US
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Polymerizable compositions containing unsaturated polyester resins and aqueous alkali stabilized colloidal silica, method of preparing shaped articles from such compositions and thermoset products thereof
Assignee: Cook Composites and Polymers Co
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Filing: 1974-06-17
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Granted: 1976-08-31
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Expires: 1994-06-17
Abstract
Abstract Polymerizable unsaturated polyester resin syrups can be extended with aqueous alkali stabilized colloidal silica in compositions containing from 0.1 to 10.0 parts by weight of aqueous alkali stabilized colloidal silica for each part by weight of the unsaturated polyester resin syrup. The unsaturated polyester resin syrups can be extended further (a) by the addition of reactive fillers such as metal oxides or hydrated metallic salts; (b) by the addition of inert fillers such as clay, silica, glass fibers, perlite; or (c) by the addition of both (a) and (b). The fillers also may include fibrous reinforcing materials such as dispersed glass fibers, randomly oriented fiber mats, wound filaments and woven fabrics. The fillers may be present in amounts from about 0.1 to about 5 times the combined weight of aqueous alkali stabilized colloidal silica and unsaturated polyester resin syrup.
Inventors
- 👤 James M. Self
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:40
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30; C04; C04B; C04B26/00; C04B26/02; C04B26/10; C04B26/18; C04B28/00; C04B28/14; C04B28/24; C08K3/18; C08K3/20; C08K3/24; C08K3/34; C08K3/36; C08K3/40; Y; Y10; Y10S; Y10S106/00; Y10S106/02
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
36 words
A polymerizable composition comprising one part by weight of unsaturated polyester resin syrup; 0.1 to 10 parts by weight of aqueous alkali stabilized colloidal silica; and a polymerization initiator for the said unsaturated polyester resin syrup.
Claim 2
Dependent Claim
36 words
A polymerizable composition comprising one part by weight of unsaturated polyester resin syrup; 0.1 to 10 parts by weight of aqueous alkali stabilized colloidal silica; and a polymerization initiator for the said unsaturated polyester resin syrup.
Claim 3
Dependent Claim
32 words
The composition of claim 1 wherein the said aqueous alkali stabilized colloidal silica contains 10 to 50 parts by weight colloidal silica having a mean particle size of 4 to 60 millimicrons.
Claim 4
Dependent Claim
27 words
A polymerizable composition having one part by weight of the composition of claim 1 uniformly dispersed with 0.1 to 5.0 parts by weight of finely divided perlite.
Claim 5
Dependent Claim
44 words
The composition of claim 3 wherein the finely divided fillers are aluminum oxide trihydrate in an amount which is less than the sum of 1.5 times the weight of unsaturated polyester resin syrup plus 3.0 times the weight of aqueous alkali stabilized colloidal silica.
Claim 6
Dependent Claim
13 words
The composition of claim 3 wherein the finely divided fillers are inert materials.
Claim 7
Dependent Claim
12 words
The composition of claim 5 wherein the finely divided filler is perlite.
Claim 8
Dependent Claim
13 words
The composition of claim 5 wherein the finely divided filler is expanded vermiculite.
Claim 9
Dependent Claim
29 words
The composition of claim 3 wherein the finely divided fillers are glass fibers comprising from 10 to 200 per cent by weight of the said unsaturated polyester resin syrup.
Claim 10
Dependent Claim
12 words
The composition of claim 1 including an accelerator for said polymerization initiator.
Claim 11
Dependent Claim
56 words
The polymerizable composition of claim 1 wherein the said unsaturated polyester resin syrup is a combination of A. unsaturated polyester resin comprising the reaction products of polyhydric alcohol and polycarboxylic acid or anhydride, at least a portion of which are ethylenically unsaturated polycarboxylic acids or anhydrides; and B. at least one copolymerizable monomer having ethylenic unsaturation.
Claim 12
Independent Claim
31 words
The method of preparing a cured thermoset article which comprises A. mixing together as a mixture 1. component 1 comprising one part by weight of an unsaturated polyester resin syrup; and
Claim 13
Independent Claim
31 words
The method of preparing a cured thermoset article which comprises A. mixing together as a mixture 1. component 1 comprising one part by weight of an unsaturated polyester resin syrup; and
Claim 14
Dependent Claim
47 words
component 2 comprising 0.1 to 10 parts by weight of aqueous alkali stabilized colloidal silica; the said mixture including a polymerization initiator for the said unsaturated polyester resin syrup; B. shaping the said mixture to the shape of the desired article; and C. curing the shaped mixture.
Claim 15
Dependent Claim
47 words
component 2 comprising 0.1 to 10 parts by weight of aqueous alkali stabilized colloidal silica; the said mixture including a polymerization initiator for the said unsaturated polyester resin syrup; B. shaping the said mixture to the shape of the desired article; and C. curing the shaped mixture.
Claim 16
Dependent Claim
32 words
The method of claim 11 wherein the said aqueous alkali stabilized colloidal silica contains 10 to 50 parts by weight colloidal silica having a mean particle size of 4 to 60 millimicrons.
Claim 17
Dependent Claim
16 words
The method of claim 12 wherein the said polymerization initiator is an ingredient of component 1.
Claim 18
Dependent Claim
16 words
The method of claim 12 wherein the said polymerization initiator is an ingredient of component 2.
Claim 19
Dependent Claim
19 words
The method of claim 14 wherein an accelerator for the said polymerization initiator is an ingredient of component 1.
Claim 20
Dependent Claim
35 words
The method of claim 12 wherein component 1 is provided as an airborne spray and component 2 is provided as an airborne spray and the two said sprays are impinged to produce the said mixture.
Claim 21
Dependent Claim
19 words
The method of claim 12 wherein the said article is shaped by spraying the said mixture onto a substrate.
Claim 22
Dependent Claim
22 words
The method of claim 12 wherein the component 1 includes up to 1.5 parts by weight of finely divided aluminum oxide trihydrate.
Claim 23
Dependent Claim
28 words
The method of claim 12 wherein the component 2 includes finely divided aluminum oxide trihydrate in an amount up to three times the weight of aqueous sodium silicate.
Claim 24
Dependent Claim
13 words
The method of claim 13 wherein the said mixture includes finely divided fillers.
Claim 25
Dependent Claim
14 words
The method of claim 20 wherein the said finely divided inert filler is perlite.
Claim 26
Dependent Claim
15 words
The method of claim 20 wherein the said finely divided inert filler is expanded vermiculite.
Claim 27
Dependent Claim
54 words
A water insoluble polymerized article consisting essentially of a thermoset resin composition containing at least 5 per cent by weight of a colloidal silica gel homogeneously dispersed with cross-linked unsaturated polyester resin syrup wherein the said cross-linked polyester contains both carboxylate salt end groups and unreacted carboxylic acid end groups in its polymerized state.
Claim 28
Dependent Claim
54 words
A water insoluble polymerized article consisting essentially of a thermoset resin composition containing at least 5 per cent by weight of a colloidal silica gel homogeneously dispersed with cross-linked unsaturated polyester resin syrup wherein the said cross-linked polyester contains both carboxylate salt end groups and unreacted carboxylic acid end groups in its polymerized state.
Claim 29
Dependent Claim
26 words
The article of claim 23 including 0.1 to 5.0 parts by weight of inert fillers dispersed throughout one part by weight of the said resin composition.
Claim 30
Dependent Claim
17 words
The article of claim 24 wherein at least a portion of the inert fillers are glass fibers.
Claim 31
Dependent Claim
31 words
The article of claim 25 wherein at least one part by weight of the said resin composition is combined with 0.06 to 0.30 parts by weight of the said glass fibers.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |