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US4540635A
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Modified colophony rosins, a process for their preparation, their use and paper-sizing agents containing such modified colophony rosins
Assignee: Krems Chemie GmbH
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Filing: 1984-03-15
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Granted: 1985-09-10
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Expires: 2004-03-15
Abstract
Abstract The colophony rosins which have been esterified with a tertiary amino alcohol are disclosed. These colophony rosins which are normally also reinforced with formaldehyde and/or an α,β-unsaturated carbonyl compounds are useful in the form of an aqueous dispersion as a paper sizing agent. Disclosed are processes for the formation of such colophony rosins and paper sizing agents containing the same as well as papers so sized.
Inventors
- 👤 Helmut Ronge
- 👤 Erhard Prantz
- 👤 Wolfgang Schoerkhuber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:40
CPC Classifications
C; C09; C09F; C09F1/00; C09F1/04; D; D21; D21H; D21H17/00; D21H17/62; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844; Y10T428/31848
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
42 words
A colophony rosin reinforced with formaldehyde and/or an α,β-unsaturated carbonyl compound and additionally esterified with an amino alcohol, wherein the colophony rosin is esterified with 2.5 to 10% by weight with one or more tertiary amino alcohols, based on the starting rosin.
Claim 2
Dependent Claim
42 words
A colophony rosin reinforced with formaldehyde and/or an α,β-unsaturated carbonyl compound and additionally esterified with an amino alcohol, wherein the colophony rosin is esterified with 2.5 to 10% by weight with one or more tertiary amino alcohols, based on the starting rosin.
Claim 3
Dependent Claim
39 words
A colophony rosin according to claim 1 consisting essentially of one reinforced by an agent consisting essentially of said formaldehyde and/or α,β-unsaturated carbonyl compound and esterified with an esterifying agent consisting essentially of one or more tertiary amino alcohols.
Claim 4
Dependent Claim
22 words
A colophony rosin according to claim 1 wherein said rosin is esterified with said tertiary amino alcohol at 170° to 250° C.
Claim 5
Dependent Claim
24 words
A colophony rosin according to claim 1 wherein said colophony rosin is a wood rosin, gum rosin, tall oil rosin or a mixture thereof.
Claim 6
Dependent Claim
11 words
A colophony rosin according to claim 4 which has been pre-treated.
Claim 7
Dependent Claim
11 words
A colophony rosin according to claim 5 additionally containing an extender.
Claim 8
Dependent Claim
76 words
A colophony rosin according to claim 1 wherein said one or more tertiary amino alcohols have the formula ##STR3## wherein R 1 , and R 2 and R 3 are identical or different and represent a C 1 to C 6 alkyl radical or C 1 to C 6 hydroxy alkyl radical, at least one of the radicals R 1 , R 2 and R 3 representing a C 1 to C 6 hydroxy alkyl radical.
Claim 9
Dependent Claim
26 words
A colophony rosin according to claim 1 which has been reinforced with formaldehyde and/or an α,β-unsaturated carbonyl compound before being esterified with said tertiary amino alcohol.
Claim 10
Dependent Claim
29 words
A colophony rosin according to claim 1 wherein said rosin has been esterified with said tertiary amino alcohol before being reinforced with said formaldehyde and/or an α,β-unsaturated carbonyl compound.
Claim 11
Dependent Claim
10 words
A colophony rosin according to claim 1 reinforced with formaldehyde.
Claim 12
Dependent Claim
12 words
A colophony rosin according to claim 1 reinforced with α,β-unsaturated carbonyl compound.
Claim 13
Dependent Claim
22 words
A colophony rosin according to claim 11 wherein said α,β-unsaturated compound is fumaric acid, maleic acid, maleic anhydride or a mixture thereof.
Claim 14
Dependent Claim
14 words
A colophony rosin according to claim 12 wherein said α,β-carbonyl compound is maleic anhydride.
Claim 15
Dependent Claim
17 words
A colophony rosin according to claim 1 for sizing in a pH range of 6 to 8.
Claim 16
Dependent Claim
21 words
A paper sizing agent in the form of an aqueous dispersion, said aqueous dispersion containing the colophony rosin of claim 1.
Claim 17
Dependent Claim
92 words
A paper sizing agent according to claim 15 containing 50 to 70% by weight of water, 25.5 to 47.5% by weight of a colophony rosin reinforced with formaldehyde and/or an α,β-unsaturated carbonyl compound and additionally esterified with an amino alcohol, wherein the colophony rosin is one esterified with 2.5 to 10% by weight of one or more tertiary amino alcohols, based on the starting rosin, said rosin being in the form of free rosin, said paper sizing agent additionally containing 1.5 to 10% by weight of said colophony rosin in saponified form.
Claim 18
Dependent Claim
31 words
A paper sizing agent according to claim 16 additionally containing 0.1 to 0.5% by weight of an additive and 1.5 to 10% by weight of an emulsifier, stabilizer or mixture thereof.
Claim 19
Dependent Claim
20 words
A paper sizing agent according to claim 17 for sizing in a pH in the range of 6 to 8.
Claim 20
Dependent Claim
52 words
A process for preparing an improved colophony rosin which comprises esterifying a colophony rosin with one or more tertiary amino alcohols in an amount of 2.5 to 10% by weight based upon the weight of the starting rosin and reinforcing the same by contacting said rosin with formaldehyde and/or α,β-unsaturated carbonyl compound.
Claim 21
Dependent Claim
52 words
A process for preparing an improved colophony rosin which comprises esterifying a colophony rosin with one or more tertiary amino alcohols in an amount of 2.5 to 10% by weight based upon the weight of the starting rosin and reinforcing the same by contacting said rosin with formaldehyde and/or α,β-unsaturated carbonyl compound.
Claim 22
Dependent Claim
46 words
A process according to claim 19 wherein said rosin is reinforced with formaldehyde and/or an α,β-unsaturated carbonyl compound before being esterified with one or more tertiary amino alcohols and the esterification of said rosin with said tertiary amino alcohols is effected at 170° to 250° C.
Claim 23
Dependent Claim
34 words
A process according to claim 19 wherein said rosin is esterified with said one or more tertiary amino alcohols at 170° to 250° C. before being reinforced with said formaldehyde and/or α,β-unsaturated carbonyl compound.
Claim 24
Dependent Claim
37 words
A process according to claim 19 wherein said colophony rosin is reinforced with an α,β-unsaturated carbonyl compound and said tertiary amino alcohol is employed in a weight ratio to said α,β-unsaturated carbonyl compound of 0.5 to 3.1:1.
Claim 25
Dependent Claim
10 words
A paper sized with the colophony rosin of claim 1.
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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |