Creping release agents
View Patent ↗Disclosed is a method of reducing adhesion to the surface of equipment used in paper manufacture or in paper converting processes, comprising applying to the surface the a composition. comprising (a) 50-98 parts of hydrocarbon oil, (b) 1-40 parts of emulsifier, and (c) 1-10 parts of a non-curing hydrocarbon polymer.
1. A method of reducing adhesion to a surface of equipment used in paper manufacture or in paper converting process comprising the steps of :
a) applying a composition comprising:
(i) 50-98 weight percent of hydrocarbon oil,
(ii) 1-40 weight percent of emulsifier, and
(iii) 1-10 weight percent of a non-curing hydrocarbon polymer, to the surface of a creping cylinder,
b) pressing the paper web against the drying surface to adhere the web to the drying surface, and
c) dislodging the web from the drying surface with a creping device to crepe the paper web.
2. The method of claim 1 wherein at least one hydrocarbon oil is selected from the group consisting of white oils, mineral oils, petroleum distillates or combinations thereof.
3. The method of claim 1 wherein the non-curing hydrocarbon polymer comprises isobutylene/butene copolymers or hydrogenates thereof.
4. The method of claim 1 wherein the non-curing hydrocarbon polymer comprises polyethylene or polypropylene based copolymers.
5. The method of claim 1 wherein the non-curing hydrocarbon polymer has the formula
or hydrogenates thereof, wherein R 1 through R 5 are hydrogen or —CH 3 , with at least one of R 1 through R 4 being —CH 3 , and n is a number such that the number average molecular weight of the hydrocarbon polymer is from 50 to 3000.
6. The method of claim 5 wherein the non-curing hydrocarbon polymer comprises a polybutene resulting from isobutylene/butene copolymerization or hydrogenates thereof.
7. The method of claim 6 wherein the composition contains less than about 8% polybutene.
8. The method of claim 1 wherein the non-curing hydrocarbon polymer comprises a polybutene resulting from isobutylene/butene copolymerization or hydrogenates thereof.
9. The method of claim 6 wherein the composition contains less than about 8% polybutene.
10. The method of claim 1 wherein the emulsifier is selected from the group consisting of polyethylene glycol mono- and diesters of fatty acids; alcohol ethoxylates; alkyl phenol ethoxylates; phosphate esters of alcohol ethoxylates; and quaternary ammonium surfactants.
11. The method of claim 1 wherein the weight percent of hydrocarbon oil is from 62 to 97 percent.
12. The method of claim 1 wherein the weight percent of emulsifiers is from 2 to 30 percent.
13. The method of claim 1 wherein the weight percent of non-curing hydrocarbon polymer is from 1 to 8 percent.
14. The method of claim 1 wherein the weight percent of non-curing hydrocarbon polymer is from 1 to 5.5 percent.
15. The method of claim 11 wherein the weight percent of emulsifiers is from 2 to 30 percent and wherein the weight percent of non-curing hydrocarbon polymer is from 1 to 8 percent.
16. The method of claim 3 wherein the weight percent of hydrocarbon oil is from 62 to 97 percent.
17. The method of claim 3 wherein the weight percent of emulsifiers is from 2 to 30 percent.
18. The method of claim 3 wherein the weight percent of non-curing hydrocarbon polymer is from 1 to 8 percent.
19. The method of claim 1 wherein the composition is applied by splaying the composition onto the surface of the equipment used in paper manufacture or in paper converting process.