US4212786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crayon compositions
Assignee: Sakura Color Products Corp
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Filing: 1978-12-08
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Granted: 1980-07-15
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Expires: 1998-12-08
Abstract
Abstract A crayon composition of this invention comprises (a) at least one of cellulose resin and vinyl resin, (b) at least one of ketone resin, xylene resin, amide resin and terpene resin, (c) at least one of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives of the sorbitols, (d) at least one of glycols, ethers of glycols, ether esters of glycols and benzoic acid esters, and (e) a pigment or an oil-soluble dye.
Inventors
- 👤 Kimio Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:01
CPC Classifications
C; C09; C09D; C09D13/00; C08; C08L; C08L29/00; C08L29/14; C08L31/00; C08L31/02; C08L31/04; C08L1/00; C08L1/08; C08L1/10; C08L1/14; C08L61/00; C08L61/04; C08L61/16
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
199 words
A drawing crayon composition comprising, per 100 parts by weight of the composition, (a) 10 to 30 parts by weight of at least one member selected from the group consisting of an ester of cellulose, ether or cellulose, polyvinyl butyral, polyvinyl acetate and ethylenevinyl acetate copolymer, (b) 5 to 30 parts by weight of at least one member selected from the group consisting of a condensation product of cyclohexanone and formaldehyde, a condensation product of meta-xylene and formaldehyde, a condensation product of meta-xylene and formaldehyde which product is modified with an alkyl phenol having C 1-6 alkyl, an amide resins prepared by the condensation polymerization of dimer acide and di- or poly-amine, a synthetic terpene resin prepared from turpentine oil, a synthetic terpene resin prepared from an unsaturated hydrocarbon and a terpene-phenol copolymer, (c) 2 to 12 parts by weight of at least one dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives of the sorbitols, (d) 25 to 60 parts by weight of at least one of glycols, ethers of glycols, ether esters of glycols and benzoic acid esters, and (e) 20 to 30 parts by weight of a pigment or 2 to 10 parts by weight of an oil-soluble dye.
Claim 2
Dependent Claim
199 words
A drawing crayon composition comprising, per 100 parts by weight of the composition, (a) 10 to 30 parts by weight of at least one member selected from the group consisting of an ester of cellulose, ether or cellulose, polyvinyl butyral, polyvinyl acetate and ethylenevinyl acetate copolymer, (b) 5 to 30 parts by weight of at least one member selected from the group consisting of a condensation product of cyclohexanone and formaldehyde, a condensation product of meta-xylene and formaldehyde, a condensation product of meta-xylene and formaldehyde which product is modified with an alkyl phenol having C 1-6 alkyl, an amide resins prepared by the condensation polymerization of dimer acide and di- or poly-amine, a synthetic terpene resin prepared from turpentine oil, a synthetic terpene resin prepared from an unsaturated hydrocarbon and a terpene-phenol copolymer, (c) 2 to 12 parts by weight of at least one dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives of the sorbitols, (d) 25 to 60 parts by weight of at least one of glycols, ethers of glycols, ether esters of glycols and benzoic acid esters, and (e) 20 to 30 parts by weight of a pigment or 2 to 10 parts by weight of an oil-soluble dye.
Claim 3
Dependent Claim
32 words
A crayon composition as defined in claim 1 wherein the component (a) is used in an amount of 15 to 25 parts by weight per 100 parts by weight of the composition.
Claim 4
Dependent Claim
32 words
A crayon composition as defined in claim 1 wherein the component (b) is used in an amount of 10 to 20 parts by weight per 100 parts by weight of the composition.
Claim 5
Dependent Claim
40 words
A crayon composition as defined in claim 1 wherein the component (c) is at least one of dibenzylidene sorbitol and derivatives thereof in which the benzene nucleus of each benzylidene has a C 1-3 alkyl substituent at an optional position.
Claim 6
Dependent Claim
40 words
A crayon composition as defined in claim 1 wherein the component (c) is at least one of tribenzylidene sorbitol and derivatives thereof in which the benzene nucleus of each benzylidene has a C 1-3 alkyl substituent at an optional position.
Claim 7
Dependent Claim
32 words
A crayon composition as defined in claim 1 wherein the component (c) is used in an amount of 3 to 8 parts by weight per 100 parts by weight of the composition.
Claim 8
Dependent Claim
18 words
A crayon composition as defined in claim 1 wherein the component (d) is at least one of glycols.
Claim 9
Dependent Claim
20 words
A crayon composition as defined in claim 1 wherein the component (d) is at least one of ethers of glycols.
Claim 10
Dependent Claim
21 words
A crayon composition as defined in claim 1 wherein the component (d) is at least one of ether esters of glycols.
Claim 11
Dependent Claim
20 words
A crayon composition as defined in claim 1 wherein the component (d) is at least one of benzoic acid esters.
Claim 12
Dependent Claim
32 words
A crayon composition as defined in claim 1 wherein the component (d) is used in an amount of 30 to 55 parts by weight per 100 parts by weight of the composition.
Claim 13
Dependent Claim
17 words
A crayon composition as defined in claim 1 wherein the component (e) is at least one pigment.
Claim 14
Dependent Claim
26 words
A crayon composition as defined in claim 12 wherein the pigment is used in an amount of 4 to 25 parts by weight of the composition.
Claim 15
Dependent Claim
18 words
A crayon composition as defined in claim 1 wherein the component (e) is at least one oil-soluble dye.
Claim 16
Dependent Claim
32 words
A crayon composition as defined in claim 14 wherein the oil-soluble dye is used in an amount of 3 to 7 parts by weight per 100 parts by weight of the composition.
Claim 17
Dependent Claim
26 words
A crayon composition as defined in claim 1 wherein the component (a) is at least one of an ester of cellulose and an ether of cullolose.
Claim 18
Dependent Claim
25 words
A crayon composition as defined in claim 1 wherein the component (a) is at least one of polyvinyl butyral, polyvinyl acetate and ethylene-vinyl acetate copolymer.
Claim 19
Dependent Claim
20 words
A crayon composition as defined in claim 1 wherein the component (b) is a condensation product of cyclohexanone and formaldehyde.
Claim 20
Dependent Claim
44 words
A crayon composition as defined in claim 1 wherein the component (b) is at least one of a condensation product of meta-xylene and formaldehyde and a condensation product of meta-xylene and formaldehyde which product is modified with an alkyl phenol having C 1-6 alkyl.
Claim 21
Dependent Claim
32 words
A crayon composition as defined in claim 1 wherein the component (b) is at least one of an amide resin prepared by the condensation polymerization of dimer acid and di- or polyamine.
Claim 22
Dependent Claim
36 words
A crayon composition as defined in claim 1 wherein the component (b) is at least one of a synthetic terpene resin prepared from turpentine oil, synthetic terpene resin prepared from an unsaturated hydrocarbon and terpene-phenol copolymer.
References Cited (Backward Citations)
US2430053A
Cited
US3702314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |